NATIONAL GEODETIC SURVEY9/10/01
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Table of Contents
Title Page
Acronyms 'R Us
NATIONAL GEODETIC SURVEY
NATIONAL SPATIAL REFERENCE SYSTEM
NATIONAL SPATIAL REFERENCE SYSTEM
Geographic Information Systems (GIS)
METADATA
THE ELLIPSOID MATHEMATICAL MODEL OFTHE EARTH
ELLIPSOID - GEOID RELATIONSHIP
UNITED STATES ELLIPSOID DEFINITIONS
HORIZONTAL DATUMS
THE GEOID AND TWO ELLIPSOIDS
COMPARISON OF DATUM ELEMENTS
NAD 27 and NAD 83
VERTICAL DATUMS
COMPARISON OF VERTICAL DATUMELEMENTS
NGVD 29 and NAVD 88
GEODETIC CONTROL
INTERNATIONAL TERRESTRIAL REFERENCESYSTEM
Author: Dave Doyle
Email: [email protected]
Home Page: www.ngs.noaa.gov
NATIONAL GEODETIC SURVEY
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/ (1 of 5) [4/10/2002 11:11:41 AM]
INTERNATIONAL TERRESTRIAL REFERENCESYSTEM
TECTONIC MOTIONS
HORIZONTAL TECTONIC MOTIONS
VERTICAL TECTONIC MOTIONS
NAD 83 and ITRF
NAD 83 - ITRF Shifts
PLANE COORDINATE SYSTEMS
UNIVERSAL TRANSVERSE MERCATOR (UTM)
STATE PLANE COORDINATE SYSTEMS
TANGENT PLANE COORDINATE SYSTEM
LAMBERT CONFROMAL CONIC WITH 2STANDARD PARALLELS
TRANSVERSE MERCATOR
LAMBERT CONFROMAL CONIC WITH 2STANDARD PARALLELS
LAMBERT CONFROMAL CONIC WITH 2STANDARD PARALLELS
COORDINATE CHANGES (STATE PLANE)
WHAT YOU NEED TO USE THE STATE PLANECOORDINATE SYSTEMS
STATE PLANE COORDINATE COMPUTATION
STATE PLANE COORDINATE COMPUTATION
REDUCTION TO THE ELLIPSOID
REDUCTION TO THE ELLIPSOID
REDUCTION TO THE ELLIPSOID
REDUCTION TO ELLIPSOID
REDUCTION TO GRID
COMBINED FACTOR
GRID AZIMUTH COMPUTATION
NATIONAL GEODETIC SURVEY
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STATE PLANE COORDINATE COMPUTATION
GROUND LEVEL COORDINATES
GROUND LEVEL COORDINATES PROBLEMS
GROUND LEVEL COORDINATES “IF YOU DO”
Status of Coordinate Legislation -- April 2000
GEODETIC CONTROL DATA SHEET
GEODETIC CONTROL DATA SHEET
GEODETIC CONTROL DATA SHEET
GEODETIC CONTROL DATA SHEET
IMPROVING POSITIONAL ACCURACY
Autonomous Positioning: Before May 1, 2000
Standalone Positioning: Since May 1, 2000
Standalone Positioning: By 2011
GLOBAL POSITIONING SYSTEM
GLOBAL NAVIGATION SATELLITE SYSTEMS(GNSS)
GPS NETWORKS TO SUPPORT GIS
GPS NETWORKS TO SUPPORT GIS
GPS NETWORKS TO SUPPORT GIS CLASSICAL
GPS NETWORKS TO SUPPORT GIS 21stCENTURY
“CLASSICAL” GPS NETWORKS
“21st Century” GPS NETWORKS
GPS NETWORKS TO SUPPORT GIS
GPS NETWORKS TO SUPPORT GIS“BLUE-BOOK”
GPS NETWORKS TO SUPPORT GIS LOCALMAINTENANCE
NAD 83 NETWORK PROBLEMS
HIGH ACCURACY REFERENCE NETWORKS
NATIONAL GEODETIC SURVEY
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FEDERAL BASE NETWORK (FBN)
COOPERATIVE BASE NETWORK (CBN)
HIGH ACCURACY REFERENCE NETWORKS
USER DENSIFICATION NETWORK (UDN)
HARN ADJUSTMENT
NAD 83 READJUSTMENT
NAD 83 READJUSTMENT
NAD 83 READJUSTMENT
NEW STANDARDS FOR GEODETIC CONTROL
DATUM TRANSFORMATIONS
DATUM TRANSFORMATIONS
DATUM TRANSFORMATIONS
CONVENTIONAL TERRESTRIAL SYSTEM (CTS)
CONVENTIONAL TERRESTRIAL SYSTEM (CTS)
CONVENTIONAL TERRESTRIAL SYSTEM (CTS)
EARTH - CENTERED COORDINATES
SOFTWARE UTILITIES
MOLODENSKY TRANSFORMATION
I NEED TO TRANSFORM BETWEEN WGS 84AND NAD 83
DATUM TRANSFORMATION - IDEAL METHOD
NADCON
COORDINATE COMPARISON NAD 27 to NAD83(1986)
COORDINATE COMPARISON NAD 27 to NAD83(1986)
COORDINATE COMPARISON NAD 83 (1986) toNAD 83(1993)
CONTINUOUSLY OPERATING REFERENCESTATIONS (CORS)
NATIONAL GEODETIC SURVEY
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/ (4 of 5) [4/10/2002 11:11:41 AM]
CONTINUOUSLY OPERATING REFERENCESTATIONS (CORS)
CONTINUOUSLY OPERATING REFERENCESTATIONS (CORS)
CONTINUOUSLY OPERATING REFERENCESTATIONS (CORS)
CORS Coverage September 2000
CORS Sampling Rates
LUBBOCK Regional Reference Point
CORS DATA SHEET
CORS DATA SHEET
CORS DATA QUALITY
Geography without Geodesy is a Felony
NATIONAL GEODETIC SURVEY
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PPT Slide
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PPT Slide
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NATIONAL GEODETIC SURVEY
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NATIONAL SPATIAL REFERENCE SYSTEM
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NATIONAL SPATIAL REFERENCE SYSTEM
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PPT Slide
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NATIONAL SPATIAL REFERENCE SYSTEM
The National Spatial Reference System (NSRS) is thatcomponent of the National Spatial Data Infrastructure(NSDI) - [http://www.fgdc.gov/nsdi/nsdi.html] whichcontains all geodetic control contained in the NationalGeodetic Survey (NGS) Data Base. This includes: A, B,First, Second and Third-Order horizontal and verticalcontrol, Geoid models such as GEOID 99, precise GPSorbits and Continuously Operating Reference Stations(CORS), and the National Shoreline as observed byNGS as well as data submitted by other Federal, State,and local agencies, Academic Institutions and theprivate sector
●
NATIONAL OCEAN SERVICE
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NATIONAL SPATIAL REFERENCE SYSTEM
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld004.htm [4/10/2002 11:11:46 AM]
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CORS DATA QUALITY
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/sld104.htm [4/10/2002 11:11:46 AM]
PPT SlideGOOD COORDINATION BEGINS WITH
GOOD COORDINATES
GEOGRAPHY WITHOUT GEODESY IS A FELONY
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PPT Slide
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PPT Slide
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/sld006.htm [4/10/2002 11:11:47 AM]
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METADATA
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/sld007.htm [4/10/2002 11:11:48 AM]
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THE ELLIPSOID
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/sld008.htm [4/10/2002 11:11:48 AM]
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ELLIPSOID - GEOID RELATIONSHIP
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/sld009.htm [4/10/2002 11:11:49 AM]
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UNITED STATES
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/sld010.htm [4/10/2002 11:11:49 AM]
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HORIZONTAL DATUMS
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/sld011.htm [4/10/2002 11:11:50 AM]
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THE GEOID AND TWO ELLIPSOIDS
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/sld012.htm [4/10/2002 11:11:50 AM]
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COMPARISON OF DATUM ELEMENTS
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NAD 27 and NAD 83
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/sld014.htm [4/10/2002 11:11:51 AM]
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VERTICAL DATUMS
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/sld015.htm [4/10/2002 11:11:52 AM]
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COMPARISON OF VERTICAL DATUM ELEMENTS
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NGVD 29 and NAVD 88
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/sld017.htm [4/10/2002 11:11:53 AM]
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GEODETIC CONTROL
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/sld018.htm [4/10/2002 11:11:53 AM]
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INTERNATIONAL TERRESTRIAL
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/sld019.htm [4/10/2002 11:11:54 AM]
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INTERNATIONAL TERRESTRIAL
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/sld020.htm [4/10/2002 11:11:54 AM]
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TECTONIC MOTIONS
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/sld021.htm [4/10/2002 11:11:55 AM]
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HORIZONTAL TECTONIC MOTIONS
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/sld022.htm [4/10/2002 11:11:55 AM]
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VERTICAL TECTONIC MOTIONS
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/sld023.htm [4/10/2002 11:11:56 AM]
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NAD 83 and ITRF
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/sld024.htm [4/10/2002 11:11:56 AM]
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PPT Slide
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PLANE COORDINATE SYSTEMS
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/sld026.htm [4/10/2002 11:11:58 AM]
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UNIVERSAL TRANSVERSE MERCATOR (UTM)
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/sld027.htm [4/10/2002 11:11:58 AM]
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STATE PLANE COORDINATE SYSTEMS
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TANGENT PLANE COORDINATE SYSTEM
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/sld029.htm [4/10/2002 11:11:59 AM]
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LAMBERT CONFROMAL CONIC
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/sld030.htm [4/10/2002 11:12:00 AM]
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TRANSVERSE MERCATOR
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/sld031.htm [4/10/2002 11:12:00 AM]
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LAMBERT CONFROMAL CONIC
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/sld032.htm [4/10/2002 11:12:01 AM]
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LAMBERT CONFROMAL CONIC
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/sld033.htm [4/10/2002 11:12:01 AM]
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COORDINATE CHANGES
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/sld034.htm [4/10/2002 11:12:02 AM]
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WHAT YOU NEED TO USE THE STATE PLANE COORDINATE SYSTEMS
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STATE PLANE COORDINATE COMPUTATION
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STATE PLANE COORDINATE COMPUTATION
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REDUCTION TO THE ELLIPSOID
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REDUCTION TO THE ELLIPSOID
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REDUCTION TO THE ELLIPSOID
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/sld040.htm [4/10/2002 11:12:04 AM]
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REDUCTION TO ELLIPSOID
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REDUCTION TO GRID
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/sld042.htm [4/10/2002 11:12:05 AM]
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COMBINED FACTOR
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/sld043.htm [4/10/2002 11:12:06 AM]
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GRID AZIMUTH COMPUTATION
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/sld044.htm [4/10/2002 11:12:06 AM]
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STATE PLANE COORDINATE COMPUTATION
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GROUND LEVEL COORDINATES
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GROUND LEVEL COORDINATES
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GROUND LEVEL COORDINATES
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PPT Slide
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GEODETIC CONTROL DATA SHEET
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GEODETIC CONTROL DATA SHEET
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GEODETIC CONTROL DATA SHEET
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GEODETIC CONTROL DATA SHEET
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IMPROVING POSITIONAL ACCURACY
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Autonomous Positioning: Before May 1, 2000
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Standalone Positioning: Since May 1, 2000
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Standalone Positioning: By 2011
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GLOBAL POSITIONING SYSTEM
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GLOBAL NAVIGATION SATELLITE SYSTEMS
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/sld059.htm [4/10/2002 11:12:14 AM]
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GPS NETWORKS TO SUPPORT GIS
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GPS NETWORKS TO SUPPORT GIS
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GPS NETWORKS TO SUPPORT GIS
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GPS NETWORKS TO SUPPORT GIS
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/sld063.htm [4/10/2002 11:12:16 AM]
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“CLASSICAL” GPS NETWORKS
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/sld064.htm [4/10/2002 11:12:17 AM]
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“21st Century” GPS NETWORKS
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/sld065.htm [4/10/2002 11:12:17 AM]
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GPS NETWORKS TO SUPPORT GIS
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/sld066.htm [4/10/2002 11:12:18 AM]
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GPS NETWORKS TO SUPPORT GIS
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GPS NETWORKS TO SUPPORT GIS
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/sld068.htm [4/10/2002 11:12:19 AM]
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NAD 83 NETWORK PROBLEMS
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/sld069.htm [4/10/2002 11:12:19 AM]
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HIGH ACCURACY REFERENCE NETWORKS
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/sld070.htm [4/10/2002 11:12:20 AM]
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FEDERAL BASE NETWORK
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/sld071.htm [4/10/2002 11:12:20 AM]
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COOPERATIVE BASE NETWORK
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/sld072.htm [4/10/2002 11:12:21 AM]
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HIGH ACCURACY REFERENCE NETWORKS
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/sld073.htm [4/10/2002 11:12:21 AM]
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USER DENSIFICATION NETWORK
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/sld074.htm [4/10/2002 11:12:22 AM]
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HARN ADJUSTMENT
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/sld075.htm [4/10/2002 11:12:22 AM]
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NAD 83 READJUSTMENT
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/sld076.htm [4/10/2002 11:12:23 AM]
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NAD 83 READJUSTMENT
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/sld077.htm [4/10/2002 11:12:23 AM]
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NAD 83 READJUSTMENT
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/sld078.htm [4/10/2002 11:12:24 AM]
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NEW STANDARDS FOR GEODETIC CONTROL
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/sld079.htm [4/10/2002 11:12:24 AM]
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DATUM TRANSFORMATIONS
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/sld080.htm [4/10/2002 11:12:25 AM]
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DATUM TRANSFORMATIONS
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/sld081.htm [4/10/2002 11:12:25 AM]
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DATUM TRANSFORMATIONS
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/sld082.htm [4/10/2002 11:12:26 AM]
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CONVENTIONAL TERRESTRIAL SYSTEM
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/sld083.htm [4/10/2002 11:12:26 AM]
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CONVENTIONAL TERRESTRIAL SYSTEM
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/sld084.htm [4/10/2002 11:12:27 AM]
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CONVENTIONAL TERRESTRIAL SYSTEM
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/sld085.htm [4/10/2002 11:12:27 AM]
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EARTH - CENTERED COORDINATES
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/sld086.htm [4/10/2002 11:12:28 AM]
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SOFTWARE UTILITIES
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/sld087.htm [4/10/2002 11:12:28 AM]
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MOLODENSKY TRANSFORMATION
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/sld088.htm [4/10/2002 11:12:29 AM]
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I NEED TO TRANSFORM
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/sld089.htm [4/10/2002 11:12:29 AM]
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DATUM TRANSFORMATION - IDEAL METHOD
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/sld090.htm [4/10/2002 11:12:30 AM]
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NADCON
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/sld091.htm [4/10/2002 11:12:30 AM]
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COORDINATE COMPARISON
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/sld092.htm [4/10/2002 11:12:31 AM]
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COORDINATE COMPARISON
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/sld093.htm [4/10/2002 11:12:31 AM]
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COORDINATE COMPARISON
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/sld094.htm [4/10/2002 11:12:32 AM]
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CONTINUOUSLY OPERATING REFERENCE STATIONS (CORS)
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/sld095.htm [4/10/2002 11:12:33 AM]
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CONTINUOUSLY OPERATING REFERENCE STATIONS (CORS)
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CONTINUOUSLY OPERATING REFERENCE STATIONS (CORS)
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Slide 98 of 105
CONTINUOUSLY OPERATING REFERENCE STATIONS (CORS)
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PPT Slide
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PPT Slide
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PPT Slide
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CORS DATA SHEET
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/sld102.htm [4/10/2002 11:12:36 AM]
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CORS DATA SHEET
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/sld103.htm [4/10/2002 11:12:37 AM]
NATIONAL GEODETIC SURVEY
INFORMATION CENTER●
(301) 713-3242●
NATIONAL OCEAN SERVICE
WEB SITE
http://www.ngs.noaa.gov
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NATIONAL GEODETIC SURVEY
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld003.htm [4/10/2002 11:12:37 AM]
PPT SlideACRONYMS US
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PPT Slide
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld002.htm [4/10/2002 11:12:37 AM]
PPT Slide●
STATE PLANE COORDINATES
and
DATUM TRANSFORMATIONS
TEXAS SOCIETY OF PROFESSIONAL SURVEYORS
AUSTIN
MARCH 23, 2001
Dave Doyle
National Geodetic Survey
Senior Geodesist
[email protected], (301) 713-3178
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PPT Slide
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld001.htm [4/10/2002 11:12:38 AM]
CORS DATA QUALITY
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CORS DATA QUALITY
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld104.htm [4/10/2002 11:12:38 AM]
NATIONAL SPATIAL REFERENCE SYSTEM
ACCURATE -- cm accuracy on a global scale● ●
MULTIPURPOSE -- Supports Geodesy, Geophysics,Land Surveying, Navigation, Mapping, Charting andGIS activities
●
●
ACTIVE -- Accessible through Continuously OperatingReference Stations (CORS) and derived products
●
●
INTEGRATED -- Related to International services andstandards (e.g. International Earth Rotation Service,International
●
GPS Service etc.)● ●
NATIONAL OCEAN SERVICE
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NATIONAL SPATIAL REFERENCE SYSTEM
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld005.htm [4/10/2002 11:12:38 AM]
PPT Slide
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PPT Slide
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld006.htm [4/10/2002 11:12:38 AM]
METADATA
METADATA IS DATA ABOUT DATA●
DATUMS
NAD 27, NAD 83(1986), NAD83 (199X), NGVD29, NAVD88❍
●
●
UNITS
Meters, U.S. Survey Feet, International Feet, Chains, Rods, Pole❍
●
ACCURACY●
A, B, 1st, 2nd, 3rd, 3cm, Scaled● ● ●
NATIONAL OCEAN SERVICE
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METADATA
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld007.htm [4/10/2002 11:12:39 AM]
THE ELLIPSOID MATHEMATICAL MODEL OFTHE EARTH
●
b
a
a = Semi major axis
b = Semi minor axis
f = a-b = Flattening
a
N
S
NATIONAL OCEAN SERVICE
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THE ELLIPSOID
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld008.htm [4/10/2002 11:12:39 AM]
ELLIPSOID - GEOID RELATIONSHIP●
H
h
Ellipsoid
GRS80
H = Orthometric Height (NAVD 88)
N
Geoid
H = h - N
PERPENDICULAR
TO ELLIPSOID
PERPENDICULAR
TO GEOID (PLUMBLINE)
DEFLECTION OF THE VERTICAL
DEFLEC99
TOPOGRAPHIC SURFACE
h = Ellipsoidal Height (NAD 83)
N = Geoid Height (GEOID 99)
GEOID99
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ELLIPSOID - GEOID RELATIONSHIP
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld009.htm [4/10/2002 11:12:39 AM]
UNITED STATES ELLIPSOID DEFINITIONS● ● ●
NATIONAL OCEAN SERVICE
CLARKE 1866
a = 6,378,206.4 m 1/f = 294.97869821
GEODETIC REFERENCE SYSTEM 1980 - (GRS 80)
a = 6,378,137 m 1/f = 298.257222101
WORLD GEODETIC SYSTEM 1984 - (WGS 84)
a = 6,378,137 m 1/f = 298.257223563
BESSEL 1841
a = 6,377,397.155 m 1/f = 299.1528128
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UNITED STATES
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld010.htm [4/10/2002 11:12:39 AM]
HORIZONTAL DATUMS
BESSEL 1841 -------------- LOCAL ASTRO DATUMS(1816-1879)
●
NEW ENGLAND DATUM (1879-1901)●
U.S. STANDARD DATUM (1901-1913)●
NORTH AMERICAN DATUM (1913-1927)●
NORTH AMERICAN DATUM OF 1927●
OLD HAWAIIAN DATUM●
CLARKE 1866 PUERTO RICO DATUM●
ST. GEORGE ISLAND - ALASKA●
ST. LAWRENCE ISLAND - ALASKA●
ST. PAUL ISLAND - ALASKA●
AMERICAN SAMOA 1962●
GUAM 1963●
GRS80 ----------- NORTH AMERICAN DATUM OF 1983
(As of June 14, 1989)❍
●
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HORIZONTAL DATUMS
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld011.htm [4/10/2002 11:12:40 AM]
THE GEOID AND TWO ELLIPSOIDS●
NATIONAL OCEAN SERVICE
GRS80-WGS84
CLARKE 1866
GEOID
Earth Mass
Center
Approximately
236 meters
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THE GEOID AND TWO ELLIPSOIDS
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld012.htm [4/10/2002 11:12:40 AM]
COMPARISON OF DATUM ELEMENTS●
NAD 27 NAD 83● ●
ELLIPSOID CLARKE 1866 GRS80
a = 6,378,206.4 m a = 6,378,137. M❍
1/f = 294.9786982 1/f = 298.257222101❍
❍
●
DATUM POINT Triangulation Station NONE
MEADES RANCH, KANSAS EARTH MASS CENTER❍
❍
●
ADJUSTMENT 25k STATIONS 250k STATIONS
Several Hundred Base Lines Appox. 30k EDMI Base Lines❍
Several Hundred Astro Azimuths 5k Astro Azimuths❍
Doppler Point Positions❍
VLBI Vectors❍
❍
●
BEST FITTING North America World-Wide●
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COMPARISON OF DATUM ELEMENTS
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld013.htm [4/10/2002 11:12:40 AM]
NAD 27 and NAD 83
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NAD 27 and NAD 83
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld014.htm [4/10/2002 11:12:40 AM]
VERTICAL DATUMS●
MEAN SEA LEVEL DATUM OF 1929● ●
NATIONAL GEODETIC VERTICAL DATUM OF 1929●
(As of July 2, 1973)● ●
NORTH AMERICAN VERTICAL DATUM OF 1988●
(As of June 24, 1993)●
NATIONAL OCEAN SERVICE
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VERTICAL DATUMS
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld015.htm [4/10/2002 11:12:40 AM]
COMPARISON OF VERTICAL DATUMELEMENTS
●
NGVD 29 NAVD 88●
❍ ●
DATUM DEFINITION 26 TIDE GAUGES FATHER’SPOINT/RIMOUSKI
●
IN THE U.S. & CANADA QUEBEC, CANADA❍
●
BENCH MARKS 100,000 450,000● ●
LEVELING (Km) 102,724 1,001,500● ●
GEOID FITTING Distorted to Fit MSL Gauges BestContinental Model
❍
●
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COMPARISON OF VERTICAL DATUM ELEMENTS
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld016.htm [4/10/2002 11:12:41 AM]
NGVD 29 and NAVD 88
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NGVD 29 and NAVD 88
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld017.htm [4/10/2002 11:12:41 AM]
GEODETIC CONTROL●
NETWORK OF MONUMENTED POINTS● ●
PRECISELY MEASURED IN ACCORDANCE●
WITH STANDARD PROCEDURES● ●
MEET ACCURACY SPECIFICATIONS● ●
ADJUSTED TO TIE TOGETHER● ●
DOCUMENTED FOR MULTIPLE USE●
NATIONAL OCEAN SERVICE
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GEODETIC CONTROL
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld018.htm [4/10/2002 11:12:41 AM]
INTERNATIONAL TERRESTRIAL REFERENCESYSTEM
NATIONAL OCEAN SERVICE
DEVELOPED AND MAINTAINED BY THE
INTERNATIONAL EARTH ROTATION SERVICE
PARIS, FRANCE FROM:
(http://hpiers.obspm.fr/)
VERY LONG BASELINE INTERFEROMETRY - (VLBI)
SATELLITE LASER RANGING - (SLR)
GLOBAL POSITIONING SYSTEM - (GPS)
DOPPLER ORBITOGRAPHY AND RADIO POSITIONING
INTEGRATED BY SATELLITE - (DORIS)
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INTERNATIONAL TERRESTRIAL
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld019.htm [4/10/2002 11:12:41 AM]
INTERNATIONAL TERRESTRIAL REFERENCESYSTEM
GEOCENTRIC +/- 3 to 4 CM● ●
MODELS FOR PLATE TECTONICS● ●
STATION VELOCITIES● ●
POSITIONAL STANDARD ERRORS● ●
REALIZED AS THE INTERNATIONAL TERRESTERIALREFERENCE FRAME (ITRF)
●
NATIONAL OCEAN SERVICE
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INTERNATIONAL TERRESTRIAL
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld020.htm [4/10/2002 11:12:42 AM]
TECTONIC MOTIONS
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TECTONIC MOTIONS
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld021.htm [4/10/2002 11:12:42 AM]
HORIZONTAL TECTONIC MOTIONS
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HORIZONTAL TECTONIC MOTIONS
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld022.htm [4/10/2002 11:12:42 AM]
VERTICAL TECTONIC MOTIONS
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VERTICAL TECTONIC MOTIONS
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld023.htm [4/10/2002 11:12:42 AM]
NAD 83 and ITRF●
NATIONAL OCEAN SERVICE
ITRF
NAD 83
Earth Mass
Center
2.2 m (3-D)
dX,dY,dZ
GEOID
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NAD 83 and ITRF
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld024.htm [4/10/2002 11:12:43 AM]
PPT Slide
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PPT Slide
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld025.htm [4/10/2002 11:12:43 AM]
PLANE COORDINATE SYSTEMS●
STATE PLANE AND UNIVERSIAL TRANSVERSEMERCATOR GRID COORDINATES ARE A DIRECTMATHEMATICAL CONVERSION FROM LATITUDE ANDLONGITUDE TO A CARTESIAN NORTHING ANDEASTING (Y & X) COORDINATE SYSTEM, AND MUSTMAINTAIN THE SAME DATUM TAG [e.g. NAD 83(1993)]AS THE LATITUDE AND LONGITUDE
●
● ●
NATIONAL OCEAN SERVICE
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PLANE COORDINATE SYSTEMS
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld026.htm [4/10/2002 11:12:43 AM]
UNIVERSAL TRANSVERSE MERCATOR (UTM)
http://www.nima.mil/GandG/pubs.html●
The Universal Grids: Universal Transverse Mercator(UTM) and Universal Polar Stereographic (UPS) -TM8358.2
●
● ●
Transverse Mercator Projection●
Zones 6o Longitude World-Wide●
Northing Origin (0 meters- Northern Hemisphere) at theEquator
●
Easting Origin (500,000 meters) at Central Meridian ofEach Zone
●
NAD 27 and NAD 83 both defined in meters●
NAD 27 to NAD 83 shift = 200-225 meters for U.S.● ●
NATIONAL OCEAN SERVICE
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UNIVERSAL TRANSVERSE MERCATOR (UTM)
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld027.htm [4/10/2002 11:12:43 AM]
STATE PLANE COORDINATE SYSTEMS
NOAA Manual NOS NGS - 5 “State Plane CoordinateSystem of 1983”
●
● ●
Lambert Conformal Conic and Transverse MercatorProjections
●
International, State and County Boundaries●
NAD 27 - Coordinates in U.S. Survey Feet●
NAD 83 - Coordinates Metric w/State Defined FootConversion
●
1 Meter = 3.280833333 U.S. Survey Feet●
1 Meter = 3.280839895 International Feet●
NAD 27 to NAD 83 VERY large Positional Shifts● ●
NATIONAL OCEAN SERVICE
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STATE PLANE COORDINATE SYSTEMS
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld028.htm [4/10/2002 11:12:43 AM]
TANGENT PLANE COORDINATE SYSTEMNATIONAL OCEAN SERVICE
Tangent Plane
Single Point of Contact
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TANGENT PLANE COORDINATE SYSTEM
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld029.htm [4/10/2002 11:12:44 AM]
LAMBERT CONFROMAL CONIC WITH 2STANDARD PARALLELS
NATIONAL OCEAN SERVICE
Approximately 158 miles
CENTRAL MERIDIAN
STANDARD PARALLELS
Nn
Ns
80
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LAMBERT CONFROMAL CONIC
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld030.htm [4/10/2002 11:12:44 AM]
TRANSVERSE MERCATORNATIONAL OCEAN SERVICE
CENTRAL MERIDIAN
80
SCALE EXACT
SCALE EXACT
SCALE < 1
SCALE > 1
SCALE > 1
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TRANSVERSE MERCATOR
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld031.htm [4/10/2002 11:12:44 AM]
LAMBERT CONFROMAL CONIC WITH 2STANDARD PARALLELS
NATIONAL OCEAN SERVICE
CENTRAL MERIDIAN
80
Convergence angles (a)
always positive East
Convergence angles (a)
always negative West
The Convention of the Sign of the Convergence Angle
is Always From Grid To Geodetic
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LAMBERT CONFROMAL CONIC
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld032.htm [4/10/2002 11:12:44 AM]
LAMBERT CONFROMAL CONIC WITH 2STANDARD PARALLELS
NATIONAL OCEAN SERVICE
CENTRAL MERIDIAN
STANDARD PARALLELS
Nn
Ns
80
SCALE EXACT
SCALE EXACT
SCALE < 1
SCALE > 1
SCALE > 1
Grid Scale Factor
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LAMBERT CONFROMAL CONIC
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld033.htm [4/10/2002 11:12:45 AM]
COORDINATE CHANGES (STATE PLANE)
STATION: DRYDEN WEST BASE●
TEXAS SOUTH CENTRAL ZONE (NAD 27/NAD 83)●
Northing Easting Converg Angle Scale Factor●
820671.30 ft. 998181.46 ft. -1o 33’ 05.5” 0.99994161●
4,250,173.558 m. 294,613.069 m. -1o 33’ 06.2”0.99994165
●
●
(13,944,111.08 ft)* (966,576.38 ft)*●
(13,944,138.78 ft)# (966,578.30 ft)#●
(27.70) (1.92)●
* Converted using U.S. Survey Foot, 1 M =3.2808333333 Ft.
●
# Converted using International Foot, 1 M =3.2808398501 Ft.
●
NATIONAL OCEAN SERVICE
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COORDINATE CHANGES
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld034.htm [4/10/2002 11:12:45 AM]
WHAT YOU NEED TO USE THE STATE PLANECOORDINATE SYSTEMS
N & E STATE PLANE COORDINATES FOR CONTROLPOINTS
●
●
AZIMUTHS●
- Conversion from Astronomic to Geodetic●
- Conversion from Geodetic to Grid (Mapping Angle)● ●
DISTANCES●
- Reduction from Horizontal to Ellipsoidal●
“Sea-Level Reduction Factor”●
- Correction for Grid Scale Factor●
- Combined Factor●
NATIONAL OCEAN SERVICE
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WHAT YOU NEED TO USE THE STATE PLANE COORDINATE SYSTEMS
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld035.htm [4/10/2002 11:12:45 AM]
STATE PLANE COORDINATE COMPUTATION
LOCKHILL 2●
N = 4,191,087.651 meters●
E = 639,910.862 meters●
Orthometric Height (H) = 323.908 meters●
Geoid Height (N) = - 24.95 meters●
Laplace Correction = - 3.41”●
Grid Scale Factor (k) = 0.99987072●
Meridian Convergence (g) = + 0o 12’ 06.4”●
Observed Astro Azimuth (aA) = 253o 26’ 14.9”●
Horizontal Distance (D) = 1010.387 meters●
NATIONAL OCEAN SERVICE
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STATE PLANE COORDINATE COMPUTATION
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld036.htm [4/10/2002 11:12:45 AM]
STATE PLANE COORDINATE COMPUTATION●
N1 = N + (Sg x cos ag)●
E1 = E + (Sg x sin ag)● ●
Where:●
N = Starting Northing Coordinate●
E = Starting Easting Coordinates●
Sg = Grid Distance●
ag = Grid Azimuth●
NATIONAL OCEAN SERVICE
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STATE PLANE COORDINATE COMPUTATION
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld037.htm [4/10/2002 11:12:46 AM]
REDUCTION TO THE ELLIPSOID●
h
N
H
R
Earth Radius
6,372,161 m
20,906,000 ft.
Earth Center
S
D
S = D x R
R + h
h = N + H
S = D x
R + N + H
R●
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REDUCTION TO THE ELLIPSOID
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld038.htm [4/10/2002 11:12:46 AM]
REDUCTION TO THE ELLIPSOID●
R = _____________
N
1 - e’2 cos2 N cos2 a
N = _____________
c
(1 - e’2 cos2 N)1/2
c = a2/b
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REDUCTION TO THE ELLIPSOID
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld039.htm [4/10/2002 11:12:46 AM]
REDUCTION TO THE ELLIPSOID●
c = a2/b
c = 6,378,1372 / 6,356,752.314
c = 6,399,593.626
N = _____________
6,399,593.626
(1 - 0.000673950 cos2 30o 29’ 48.47740”)1/2
N = _____________
6,399,593.626
(1 - 0.000673950 x 0.787543759)1/2
N = _____________
6,399,593.626
(0.999469236)1/2
N = 6,401,292.641
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REDUCTION TO THE ELLIPSOID
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld040.htm [4/10/2002 11:12:46 AM]
REDUCTION TO ELLIPSOID
S = D x [R / (R + h)]●
D = 1010.387 meters (Measured Horizontal Distance)●
R = 6,372,162 meters (Mean Radius of the Earth)●
h = H + N (H = 324 m, N = - 25 m)●
= 299 meters (Ellipsoidal Height)● ●
S = 1010.387 [6,372,162 / 6,372,162 + 299]●
S = 1010.387 x 0.999953079●
S = 1010.340 meters●
NATIONAL OCEAN SERVICE
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REDUCTION TO ELLIPSOID
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld041.htm [4/10/2002 11:12:47 AM]
REDUCTION TO GRID●
Sg = S (Geodetic Distance) x k (Grid Scale Factor)● ●
Sg = 1010.340 x 0.99987072❍
●
= 1010.209 meters●
NATIONAL OCEAN SERVICE
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REDUCTION TO GRID
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld042.htm [4/10/2002 11:12:47 AM]
COMBINED FACTOR
CF = Ellipsoidal Reduction x Grid Scale Factor (k)● ●
= 0.999953079 x 0.99987072● ●
= 0.999823805● ●
CF x D = Sg● ●
0.999823805 x 1010.387 = 1010.209 meters●
NATIONAL OCEAN SERVICE
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COMBINED FACTOR
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld043.htm [4/10/2002 11:12:47 AM]
GRID AZIMUTH COMPUTATION
ag = aA + Laplace Correction - g●
= 253o 26’ 14.9” (Observed Astro Azimuth)●
+ (- 3.4)” (Laplace Correction)●
= 253o 26’ 11.5” (Geodetic Azimuth)●
- 0 12 06.4 (Convergence Angle)●
= 253o 14’ 05.1”● ●
The convention of the sign of the convergence angle is●
always from Grid to Geodetic●
NATIONAL OCEAN SERVICE
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GRID AZIMUTH COMPUTATION
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld044.htm [4/10/2002 11:12:47 AM]
STATE PLANE COORDINATE COMPUTATION
N1 = N + (Sg x cos ag)●
E1 = E + (Sg x sin ag)● ●
N1 = 4,191,087.651 + (1010.209 x Cos 253o 14’ 05.1”)●
= 4,191,087.651 + (1010.209 x - 0.288451128)●
= 4,191,087.651 + (- 291.396)●
= 4,190,796.255 meters● ●
E1 = 639,910.862 + (1010.209 x Sin 253o 14’ 05.1”)●
= 639,910.862 + (1010.209 x - 0.9597494620)●
= 639,910.862 + (- 967.270)●
= 638,943.592 meters●
NATIONAL OCEAN SERVICE
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STATE PLANE COORDINATE COMPUTATION
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld045.htm [4/10/2002 11:12:47 AM]
GROUND LEVEL COORDINATES●
“I WANT STATE PLANE COORDINATES RAISED TOGROUND LEVEL”
●
●
GROUND LEVEL COORDINATES ARE NOT STATEPLANE COORDINATES!!!!!
●
NATIONAL OCEAN SERVICE
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GROUND LEVEL COORDINATES
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld046.htm [4/10/2002 11:12:48 AM]
GROUND LEVEL COORDINATES PROBLEMS●
RAPID DISTORTIONS● ●
PROJECTS DIFFICULT TO TIE TOGETHER● ●
CONFUSION OF COORDINATE SYSTEMS● ●
LACK OF DOCUMENTATION●
NATIONAL OCEAN SERVICE
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GROUND LEVEL COORDINATES
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld047.htm [4/10/2002 11:12:48 AM]
GROUND LEVEL COORDINATES “IF YOU DO”
TRUNCATE COORDINATE VALUES●
SUCH AS:●
N = 13,750,260.07 ft becomes 50,260.07●
E = 2,099,440.89 ft becomes 99,440.89●
AND● ●
NATIONAL OCEAN SERVICE
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GROUND LEVEL COORDINATES
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld048.htm [4/10/2002 11:12:48 AM]
PPT Slide
NO SPCS EXISTING NAD 27 ENACTED NAD 83 SPCLEGISLATION LEGISLATION LEGISLATION
●
(4) (3) (45)● ●
District of Columbia Alabama Alaska Maryland (S)Oklahoma (S)
●
Hawaii Arkansas Arizona (I) Massachusetts (S) Oregon(I)
●
Nebraska Illinois California (S) Michigan (I)Pennsylvania (S)
●
Puerto Rico Colorado (S) Minnesota Rhode Island●
Connecticut (S) Mississippi (S) South Carolina (I)●
I = International Feet and Meters Delaware(S) MissouriSouth Dakota
●
1 m = 3.280839895 feet Florida (S) Montana (I)Tennessee (S)
●
S = U.S. Survey Feet and Meters Georgia (S) NevadaTexas (S)
●
1 m = 3.280833333 feet Idaho (S) New Hampshire Utah(I)
Indiana (S) New Jersey Vermont❍
Iowa New Mexico (S) Virginia (S)❍
Kansas New York (S) Washington (S)❍
Kentucky (S) North Carolina (S) West Virginia❍
●
PPT Slide
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld049.htm (1 of 2) [4/10/2002 11:12:48 AM]
Louisiana North Dakota (I) Wisconsin (S)❍
Maine Ohio Wyoming❍
❍
STATUS OF NAD 27 AND NAD 83 STATE PLANE
COORDINATE LEGISLATION - APRIL, 2000
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PPT Slide
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld049.htm (2 of 2) [4/10/2002 11:12:48 AM]
GEODETIC CONTROL DATA SHEETH = h - N
2217.58 = 2142.68 - (-74.87)
2217.58 = 2217.55
National Geodetic Survey, Retrieval Date = OCTOBER 31, 2000
BP0663 **********************************************************************
BP0663 FBN - This is a Federal Base Network Control Station.
BP0663 DESIGNATION - DRYDEN WEST BASE
BP0663 PID - BP0663
BP0663 STATE/COUNTY- TX/TERRELL
BP0663 USGS QUAD - MOFETA (1969)
BP0663
BP0663 *CURRENT SURVEY CONTROL
BP0663 ___________________________________________________________________
BP0663* NAD 83(1993)- 30 03 11.90766(N) 102 10 02.45017(W) ADJUSTED
BP0663* NAVD 88 - 675.919 (meters) 2217.58 (feet) ADJUSTED
BP0663 ___________________________________________________________________
BP0663 X - -1,164,674.028 (meters) COMP
BP0663 Y - -5,401,732.797 (meters) COMP
BP0663 Z - 3,175,817.044 (meters) COMP
BP0663 LAPLACE CORR- -2.10 (seconds) DEFLEC99
BP0663 ELLIP HEIGHT- 653.09 (meters) GPS OBS
BP0663 GEOID HEIGHT- -22.82 (meters) GEOID99
BP0663 DYNAMIC HT - 674.897 (meters) 2214.22 (feet) COMP
BP0663 MODELED GRAV- 979,107.8 (mgal) NAVD 88
BP0663
BP0663 HORZ ORDER - B
BP0663 VERT ORDER - FIRST CLASS II
BP0663 ELLP ORDER - THIRD CLASS I
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GEODETIC CONTROL DATA SHEET
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld050.htm [4/10/2002 11:12:49 AM]
GEODETIC CONTROL DATA SHEET
BP0663.The horizontal coordinates were established byGPS observations
●
BP0663.and adjusted by the National Geodetic Surveyin May 1994.
●
BP0663●
BP0663.The orthometric height was determined bydifferential leveling
●
BP0663.and adjusted by the National Geodetic Surveyin June 1991.
●
BP0663●
BP0663.The X, Y, and Z were computed from theposition and the ellipsoidal ht.
●
BP0663●
BP0663.The Laplace correction was computed fromDEFLEC99 derived deflections.
●
BP0663●
BP0663.The ellipsoidal height was determined by GPSobservations
●
BP0663.and is referenced to NAD 83.●
GEODETIC CONTROL DATA SHEET
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld051.htm (1 of 2) [4/10/2002 11:12:49 AM]
BP0663●
BP0663.The geoid height was determined by GEOID99.●
BP0663●
BP0663.The dynamic height is computed by dividingthe NAVD 88
●
BP0663.geopotential number by the normal gravityvalue computed on the
●
BP0663.Geodetic Reference System of 1980 (GRS 80)ellipsoid at 45
●
BP0663.degrees latitude (g = 980.6199 gals.).●
BP0663●
BP0663.The modeled gravity was interpolated fromobserved gravity values.
●
● ●
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GEODETIC CONTROL DATA SHEET
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld051.htm (2 of 2) [4/10/2002 11:12:49 AM]
GEODETIC CONTROL DATA SHEET
BP0663; North East Units Scale Converg.●
BP0663;SPC TXSC - 4,250,173.558 294,613.069 MT0.99994165 -1 33 06.2
●
BP0663;UTM 13 - 3,328,075.088 773,112.518 MT1.00052037 +1 25 10.2
●
BP0663●
BP0663: Primary Azimuth Mark Grid Az●
BP0663:SPC TXSC - ELDRIDGE 180 38 42.4●
BP0663:UTM 13 - ELDRIDGE 177 40 26.0●
BP0663●
BP0663|---------------------------------------------------------------------|●
BP0663| PID Reference Object Distance Geod. Az |●
BP0663| dddmmss.s |●
BP0663| BP0843 ELDRIDGE APPROX. 5.0 KM 1790536.2 |●
BP0663| BP0071 N 27 128.940 METERS 26122 |●
BP0663|---------------------------------------------------------------------|●
BP0663●
GEODETIC CONTROL DATA SHEET
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld052.htm (1 of 2) [4/10/2002 11:12:49 AM]
BP0663 SUPERSEDED SURVEY CONTROL●
BP0663●
BP0663 ELLIP HT - 653.17 (m) GP( ) 4 2●
BP0663 NAD 83(1986)- 30 03 11.87425(N) 102 1002.48756(W) AD( ) 2
●
BP0663 NAD 27 - 30 03 11.18700(N) 102 10 01.00100(W)AD( ) 2
●
BP0663 NGVD 29 - 675.81 (m) 2217.2 (f) LEVELING 3●
BP0663●
BP0663.Superseded values are not recommended forsurvey control.
●
BP0663.NGS no longer adjusts projects to the NAD 27 orNGVD 29 datums.
●
●
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GEODETIC CONTROL DATA SHEET
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld052.htm (2 of 2) [4/10/2002 11:12:49 AM]
GEODETIC CONTROL DATA SHEET
BP0663_MARKER: DS = TRIANGULATION STATIONDISK
●
BP0663_SETTING: 7 = SET IN TOP OF CONCRETEMONUMENT
●
BP0663_PROJECTION: FLUSH●
BP0663_MAGNETIC: N = NO MAGNETIC MATERIAL●
BP0663_STABILITY: C = MAY HOLD, BUT OF TYPECOMMONLY SUBJECT TO
●
BP0663+STABILITY: SURFACE MOTION●
BP0663_SATELLITE: THE SITE LOCATION WASREPORTED AS SUITABLE FOR
●
BP0663+SATELLITE: SATELLITE OBSERVATIONS -February 19, 1998
●
BP0663●
BP0663 HISTORY - Date Condition Recov. By●
BP0663 HISTORY - 1918 MONUMENTED CGS●
BP0663 HISTORY - 1958 GOOD AMS●
BP0663 HISTORY - 1981 GOOD NGS●
GEODETIC CONTROL DATA SHEET
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld053.htm (1 of 2) [4/10/2002 11:12:50 AM]
BP0663 HISTORY - 1988 GOOD LOCSUR●
BP0663 HISTORY - 19930222 GOOD NGS●
BP0663 HISTORY - 19980219 GOOD NGS●
BP0663 HISTORY - 19981110 GOOD TXDOT●
BP0663●
BP0663 STATION DESCRIPTION●
BP0663●
BP0663'DESCRIBED BY COAST AND GEODETICSURVEY 1918 (EHP)
●
BP0663'STATION IS ON THE SOUTHERN PACIFICRIGHT-OF-WAY AT THE FIRST
●
BP0663'CURVE ABOUT 4 MILES W OF DRYDEN, ATTHE POINT OF INTERSECTION OF
●
BP0663'TANGENTS OF N RAIL.● ●
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GEODETIC CONTROL DATA SHEET
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld053.htm (2 of 2) [4/10/2002 11:12:50 AM]
IMPROVING POSITIONAL ACCURACY
TIME NETWORK LOCAL●
NETWORK SPAN ACCURACY ACCURACY● ●
NAD 27 1927-1986 10 Meters First-Order (1 part in 0.1million)
●
●
NAD 83 1986-1990 1 Meter First-Order(1 part in 0.1million)
●
●
HARN 1987-1997 0.1 Meter B-Order(1 part in 1 million)●
A-Order (1 part in 10 million)● ●
CORS 1994 - 0.02 Meter - Horizontal●
0.04 Meter - Ellipsoid Height●
❍
❍
●
NATIONAL OCEAN SERVICE
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IMPROVING POSITIONAL ACCURACY
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld054.htm [4/10/2002 11:12:50 AM]
Autonomous Positioning: Before May 1, 2000
C/A Code on L1●
Selective Availability●
25-100 m
HORIZONTAL = 100 meters
VERTICAL = 156 meters
1996 Federal Radionavigation Plan
Section A2-1, Part B
http://www.navcen.uscg.mil/policy/frp1996
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Autonomous Positioning: Before May 1, 2000
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld055.htm [4/10/2002 11:12:50 AM]
Standalone Positioning: Since May 1, 2000
C/A Code on L1●
No Selective Availability●
6-11 m
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Standalone Positioning: Since May 1, 2000
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld056.htm [4/10/2002 11:12:50 AM]
Standalone Positioning: By 2011
C/A Code on L1●
C/A Code on L2●
New Code on L5●
1-3 m
Better resistance to interference
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Standalone Positioning: By 2011
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld057.htm [4/10/2002 11:12:51 AM]
GLOBAL POSITIONING SYSTEM
GPS BLOCK III●
Potential Future Developments●
http://206.65.196.30/gps/issues/dotgpspressreleases.htm● ●
30 - 32 satellites●
Second and Third Civil Frequency●
(1227.60 MHZ & 1176.45 MHZ)●
More Robust Signal Transmissions●
Real-Time Unaugmented 1 Meter Accuracy●
Initial Launches ~ 2005●
Complete Replacements ~ 2011●
NATIONAL OCEAN SERVICE
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GLOBAL POSITIONING SYSTEM
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld058.htm [4/10/2002 11:12:51 AM]
GLOBAL NAVIGATION SATELLITE SYSTEMS(GNSS)
POTENTIAL FUTURE DEVELOPMENTS●
(2005 - 2011)● ●
GPS MODERNIZATION - BLOCK III●
GLONASS ENHANCEMENTS (K & M)●
EUROPEAN UNION - GALILEO● ●
80+ Satellites●
Second and Third Civil Frequency - GPS●
No Signal Encryption - GLONASS & GALILEO●
More Robust Signal Transmissions●
Real-Time Unaugmented 1 Meter (or better!) Accuracy●
NATIONAL OCEAN SERVICE
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GLOBAL NAVIGATION SATELLITE SYSTEMS
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld059.htm [4/10/2002 11:12:51 AM]
GPS NETWORKS TO SUPPORT GIS
GPS SURVEY DATA● ●
OBSERVE TO NATIONAL STANDARDS● ●
TIES TO CORS, HARN and LOCAL BMs● ●
QUALITY MONUMENTATION● ●
NATIONAL OCEAN SERVICE
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GPS NETWORKS TO SUPPORT GIS
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld060.htm [4/10/2002 11:12:51 AM]
GPS NETWORKS TO SUPPORT GIS●
“CLASSICAL”●
Lots of control points spaced at regular intervals●
(1-3 miles)● ● ●
“21st CENTURY”●
CORS and Monumentation as needed●
NATIONAL OCEAN SERVICE
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GPS NETWORKS TO SUPPORT GIS
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld061.htm [4/10/2002 11:12:52 AM]
GPS NETWORKS TO SUPPORT GISCLASSICAL
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GPS NETWORKS TO SUPPORT GIS
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld062.htm [4/10/2002 11:12:52 AM]
GPS NETWORKS TO SUPPORT GIS 21stCENTURY
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GPS NETWORKS TO SUPPORT GIS
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld063.htm [4/10/2002 11:12:52 AM]
“CLASSICAL” GPS NETWORKS
PROS●
Monumentation usually established in only 1 or 2 GPSsurvey campaigns
●
Complete coverage●
No time lag for users access to control● ●
CONS●
Large initial cost●
Continual network maintenance●
Monumentation destroyed or disturbed before they’reused
●
●
NATIONAL OCEAN SERVICE
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“CLASSICAL” GPS NETWORKS
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld064.htm [4/10/2002 11:12:52 AM]
“21st Century” GPS NETWORKS
PROS●
Minimal “permanent” monumentation●
Project control established when and where needed●
Costs spread over time● ●
CONS●
Qualified staff to coordinate user requirements●
Time lag to establish project control● ● ● ●
NATIONAL OCEAN SERVICE
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“21st Century” GPS NETWORKS
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld065.htm [4/10/2002 11:12:53 AM]
GPS NETWORKS TO SUPPORT GIS
GPS SURVEY DATA● ●
“BLUE - BOOK” SUBMISSION OF DATA FOR●
INCLUSION IN NSRS● ●
OR● ●
DATA MAINTAINED AT THE LOCAL LEVEL● ● ● ●
NATIONAL OCEAN SERVICE
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GPS NETWORKS TO SUPPORT GIS
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld066.htm [4/10/2002 11:12:53 AM]
GPS NETWORKS TO SUPPORT GIS“BLUE-BOOK”
PROS●
DATA MAINTAINED IN NSRS IN PERPETUTITY● ●
UNIVERSAL DATA ACCESS VIA NGS WEB SITE● ●
“GOOD HOUSEKEEPING SEAL OF APPROVAL”● ●
CONS●
INCREASED INITIAL COST (15 - 20%)● ●
SLIGHT INCREASE IN INITIAL DATA PROCESSINGTIME
●
● ● ● ●
NATIONAL OCEAN SERVICE
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GPS NETWORKS TO SUPPORT GIS
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld067.htm [4/10/2002 11:12:53 AM]
GPS NETWORKS TO SUPPORT GIS LOCALMAINTENANCE
PROS●
DECREASED INITIAL SURVEY COSTS● ●
LOCAL CONTROL OF ALL DATA● ● ●
CONS●
READJUSTMENTS TO FUTURE REFERENCE FRAMECHANGES MUST BE DONE AT THE LOCAL LEVEL
●
●
DATA MAY BE DIFFICULT TO LOCATE FOR“NON-LOCALS”
●
● ● ● ●
NATIONAL OCEAN SERVICE
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GPS NETWORKS TO SUPPORT GIS
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld068.htm [4/10/2002 11:12:53 AM]
NAD 83 NETWORK PROBLEMS●
NOT “GPSABLE”●
NATIONAL OCEAN SERVICE
POOR STATION ACCESSIBILITY
IRREGULARLY SPACED
POSITIONAL ACCURACY
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NAD 83 NETWORK PROBLEMS
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld069.htm [4/10/2002 11:12:54 AM]
HIGH ACCURACY REFERENCE NETWORKS
“GPSABLE”●
Clear Horizons for Satellite Signal Acquisition● ●
EASY ACCESSIBILITY●
Few Special Vehicle or Property EntranceRequirements
●
●
REGULARLY SPACED●
Always within 20-100 Km● ●
HIGH HORIZONTAL ACCURACY●
A-Order (5 mm + 1:10,000,000)●
B-Order (8mm + 1:1,000,000)●
NATIONAL OCEAN SERVICE
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HIGH ACCURACY REFERENCE NETWORKS
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld070.htm [4/10/2002 11:12:54 AM]
FEDERAL BASE NETWORK (FBN)
NGS FUNDED●
NGS MARK MAINTENANCE●
MAXIMUM 100 KM STATION SPACING●
A and B-ORDER HORIZONTAL ACCURACY●
FIRST-ORDER CLASS II ORTHOMETRIC HEIGHTS●
or●
SECOND-ORDER CLASS I ORTHOMETRIC HEIGHTS●
SECOND-ORDER CLASS I ELLIPSOIDAL HEIGHTS●
REVISIT EVERY 3 TO 5 YEARS●
NATIONAL OCEAN SERVICE
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FEDERAL BASE NETWORK
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld071.htm [4/10/2002 11:12:54 AM]
COOPERATIVE BASE NETWORK (CBN)●
STATE/LOCAL SUPPORTED●
STATE/LOCAL MARK MAINTENANCE●
25 TO 30 KM STATION SPACING●
B-ORDER HORIZONTAL ACCURACY●
THIRD-ORDER CLASS I ORTHOMETRIC HEIGHTS●
THIRD-ORDER CLASS I ELLIPSOIDAL HEIGHTS●
REVISIT AS NECESSARY●
NATIONAL OCEAN SERVICE
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COOPERATIVE BASE NETWORK
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld072.htm [4/10/2002 11:12:54 AM]
HIGH ACCURACY REFERENCE NETWORKS●
NATIONAL OCEAN SERVICE
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HIGH ACCURACY REFERENCE NETWORKS
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld073.htm [4/10/2002 11:12:55 AM]
USER DENSIFICATION NETWORK (UDN)●
FEDERAL-STATE-LOCAL FUNDING● ●
STATION SPACING AS REQUIRED● ●
GPS OBSERVATIONS ONLY (HORIZONTAL)● ●
FIRST-ORDER HORIZONTAL ACCURACY● ●
REVISIT AS NEEDED●
NATIONAL OCEAN SERVICE
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USER DENSIFICATION NETWORK
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld074.htm [4/10/2002 11:12:55 AM]
HARN ADJUSTMENT● ● ● ●
NAD 83 Data that is NOT Part of NSRS must●
be readjusted by contractor/user with originalobservations
●
NATIONAL OCEAN SERVICE
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HARN ADJUSTMENT
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld075.htm [4/10/2002 11:12:55 AM]
NAD 83 READJUSTMENT
HARN COMPLETION - SEPTEMBER 1997●
(Indiana)● ●
GPS HEIGHT MODERNIZATION OBSERVATIONS●
(1997 - 2003?)●
(Texas observed 1998 )●
(http://www.ngs.noaa.gov/initiatives/height_modernization.shtml)● ●
COMPLETE GPS NAD 83 3-D ADJUSTMENT●
(http://www.ngs.noaa.gov/initiatives/new_reference.shtml)●
(2003?)● ●
REMOVAL OF SMALL REGIONAL DISTORTIONS●
(3 - 6 CM)● ●
UNIFORM COORDINATE TAG●
NAD 83 (NSRS)● ● ● ● ●
NATIONAL OCEAN SERVICE
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NAD 83 READJUSTMENT
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld076.htm [4/10/2002 11:12:55 AM]
NAD 83 READJUSTMENT● ● ●
NATIONAL OCEAN SERVICE
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NAD 83 READJUSTMENT
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld077.htm [4/10/2002 11:12:56 AM]
NAD 83 READJUSTMENT
ONLY GPS DATA● ●
CONTINUOUSLY OPERATING REFERENCE STATIONS●
FEDERAL BASE NETWORK●
COOPERATIVE BASE NETWORK●
AIRPORT SURVEYS●
USER DENSIFICATION NETWORK●
SPECIAL SURVEYS●
NATIONAL OCEAN SERVICE
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NAD 83 READJUSTMENT
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld078.htm [4/10/2002 11:12:56 AM]
NEW STANDARDS FOR GEODETIC CONTROL
Two accuracy standards●
(http://fgdc.er.usgs.gov/standards/status/swgstat.html)●
local accuracy ------------- adjacent points●
network accuracy ---------- relative to CORS● ●
Numeric quantities, units in cm (or mm)●
Both are relative accuracy measures●
Do not use distance dependent expression●
Horizontal accuracies are radius of 2-D 95% error circle●
Ellipsoidal/Orthometric heights are 1-D (linear) 95%error
●
NATIONAL OCEAN SERVICE
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NEW STANDARDS FOR GEODETIC CONTROL
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld079.htm [4/10/2002 11:12:56 AM]
DATUM TRANSFORMATIONS
1. WHAT DATUM ARE THE EXISTING COORDINATESON?
●
2. WHAT DATUM DO I WANT THE NEW COORDINATESON?
●
3. HOW LARGE A GEOGRAPHICAL AREA DO I WANTTO CONVERT AT ONE TIME?
●
4. HOW MANY POINTS ARE COMMON TO BOTHDATUMS?
●
5. WHAT IS THE DISTRIBUTION OF THE COMMONPOINTS?
●
6. HOW ACCURATE ARE THE EXISTINGCOORDINATES?
●
●
0.1 Foot
1.0 Foot❍
10. Feet❍
●
●
7. HOW ACCURATE DO I WANT THE NEWCOORDINATES?
●
NATIONAL OCEAN SERVICE
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DATUM TRANSFORMATIONS
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld080.htm [4/10/2002 11:12:56 AM]
DATUM TRANSFORMATIONS
MOLODENSKY● ●
Converts latitude, longitude and ellipsoidal height toX,Y,Z Earth-Centered Coordinates.
●
●
Applies a 3-dimensional change in the origin (dX,dY,dZ)
●
Applies a change in the size and shape of the referenceellipsoid
●
●
Converts new X,Y,Z Earth-Centered Coordinates backto latitude, longitude and ellipsoidal height
●
● ● ●
NATIONAL OCEAN SERVICE
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DATUM TRANSFORMATIONS
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld081.htm [4/10/2002 11:12:57 AM]
DATUM TRANSFORMATIONS
MOLODENSKY● ●
For continental regions accuracy can be +/- 8 to 10meters
●
●
Does not model network distortions very well.● ●
Assumes heights in both systems are ellipsoidal (NAD27 did not have ellipsoidal heights).
●
NATIONAL OCEAN SERVICE
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DATUM TRANSFORMATIONS
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld082.htm [4/10/2002 11:12:57 AM]
CONVENTIONAL TERRESTRIAL SYSTEM (CTS)●
EARTH
MASS CENTER
NATIONAL OCEAN SERVICE
Z CTS
XCTS
YCTS
Greenwich
Meridian
Equator
Y
X
Z
l
CIO
N
h
f
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CONVENTIONAL TERRESTRIAL SYSTEM
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld083.htm [4/10/2002 11:12:57 AM]
CONVENTIONAL TERRESTRIAL SYSTEM (CTS)●
TO TRANSFORM GEODETIC COORDINATES (f, l, h) TO
RECTANGULAR COORDINATES (X, Y, Z)
X = (N + h) cos f cos l
Y = (N + h) cos f sin l
Z = [N + h (1- e2)] sin f
Where N = a / (1- e2 sin2 f)
a = semi-major axis
e2 = (a2 - b2) / a2
Radius of Curvature in the Prime Vertical NOT the Geoid Height
From: Seeber “Satellite Geodesy”
Walter de Gruyter & Co. publishing, 1993
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CONVENTIONAL TERRESTRIAL SYSTEM
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld084.htm [4/10/2002 11:12:57 AM]
CONVENTIONAL TERRESTRIAL SYSTEM (CTS)●
TO TRANSFORM RECTANGULAR COORDINATES (X, Y, Z)
TO GEODETIC COORDINATES (f, l, h)
From: Seeber “Satellite Geodesy”
Walter de Gruyter & Co. publishing, 1993
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CONVENTIONAL TERRESTRIAL SYSTEM
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld085.htm [4/10/2002 11:12:58 AM]
EARTH - CENTERED COORDINATES●
TO TRANSFORM GEODETIC COORDINATES (f, l, h) TO
RECTANGULAR COORDINATES (X, Y, Z)
Difficult to perform computations for “classical” geodetic system
No ellipsoid heights
Poor, if any geoid model
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EARTH - CENTERED COORDINATES
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld086.htm [4/10/2002 11:12:58 AM]
SOFTWARE UTILITIES●
http://www.ngs.noaa.gov/TOOLS/XYZ/xyz.html
XYZ Coordinate Conversion
Provides methods for converting between Geodetic Latitude-Longitude-Ellipsoid_ht and XYZ on the GRS80Ellipsoid.
FORWRD3D
Program for computing the 3D geodetic position for a point given the 3D geodetic position of a beginning point.
INVERS3D
Program INVERS3D is the three dimensional version of program INVERSE, and is the tool for computing not justthe geodetic azimuth and ellipsoidal distance, but also the mark-to-mark distance, the ellipsoid height difference,the dx, dy, dz, and the dn, de, du using the FROM station as the origin of the new coordinate system.
HTDP - Horizontal Time Dependent Positioning
Allows users to predict horizontal displacements and/or velocities at locations throughout the United States and toupdate geodetic coordinates and/or observations from one date to another..
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SOFTWARE UTILITIES
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld087.htm [4/10/2002 11:12:58 AM]
MOLODENSKY TRANSFORMATION● ● ●
(http://www.nima.mil/GandG/pubs.html)
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MOLODENSKY TRANSFORMATION
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld088.htm [4/10/2002 11:12:58 AM]
I NEED TO TRANSFORM BETWEEN WGS 84AND NAD 83
● ● ●
Federal Register Notice: Vol. 60, No. 157, August 15, 1995, pg. 42146
“Use of NAD 83/WGS 84 Datum Tag on Mapping Products”
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I NEED TO TRANSFORM
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld089.htm [4/10/2002 11:12:59 AM]
DATUM TRANSFORMATION - IDEAL METHOD
SATISFIES ALL USERS’ REQUIREMENTS● ●
CAPABLE OF TRANSFORMING LARGE HOLDINGS OFCOORDINATE DATA
●
●
NEAR-REAL TIME APPLICATIONS● ●
SIMPLE - METHOD SHOULD NOT REQUIRE ANEXPERT OR DECISIONS TO BE MADE
●
●
ACCURATE●
NATIONAL OCEAN SERVICE
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DATUM TRANSFORMATION - IDEAL METHOD
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld090.htm [4/10/2002 11:12:59 AM]
NADCON
DESIGNED TO SATISFY THE MAJORITY OF THE“IDEAL METHOD” DESIGN AND HAS DEFINED AS THENATIONAL STANDARD.
●
●
DESIGN CRITERIA:●
Relies only on NGS archived data existing in both NAD27 and NAD 83
●
Provides consistent results, both forward and inverse●
Fast●
Not tied to NGS Data Base●
Small - Fit on PC●
Accurate●
15 cm (1 sigma) in Conterminous U.S. NAD 27 - NAD83(1986)
●
5 cm (1 sigma) per State/Region NAD 83 (1986) - HARN●
NATIONAL OCEAN SERVICE
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NADCON
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld091.htm [4/10/2002 11:12:59 AM]
COORDINATE COMPARISON NAD 27 to NAD83(1986)
TR8350.2 “World Geodetic System 1984 - Its Definitionand
●
Relationship with Local Geodetic Systems”●
ADJUSTED vs. TRANSFORMED● ●
Station: DRYDEN WEST BASE● ●
LATITUDE LONGITUDE●
30-03-11.87425 102-10-02.48756 - PUBLISHED●
30-03-11.91943 102-10-02.54374 - MOLODENSKY●
.04518” .05618”●
1.391 m 1.505 m●
THIS CORRESPONDS TO A POSITIONAL●
DIFFERENCE OF 2.049 m (6.72 ft)●
NATIONAL OCEAN SERVICE
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COORDINATE COMPARISON
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld092.htm [4/10/2002 11:12:59 AM]
COORDINATE COMPARISON NAD 27 to NAD83(1986)
NADCON●
(ftp://ftp.ngs.noaa.gov/pub/pcsoft/nadcon/)●
ADJUSTED vs. TRANSFORMED● ●
Station: DRYDEN WEST BASE●
LATITUDE LONGITUDE● ●
30-03-11.87425 102-10-02.48756 - PUBLISHED●
30-03-11.87290 102-10-02.48779 - NADCON●
.00135” .00023”●
0.042 m 0.006 m● ●
THIS CORRESPONDS TO A POSITIONAL●
DIFFERENCE OF 0.046m (0.15 ft)●
NATIONAL OCEAN SERVICE
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COORDINATE COMPARISON
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld093.htm [4/10/2002 11:13:00 AM]
COORDINATE COMPARISON NAD 83 (1986) toNAD 83(1993)
NADCON● ●
ADJUSTED vs. TRANSFORMED● ●
Station: DRYDEN WEST BASE●
LATITUDE LONGITUDE● ●
30-03-11.90766 102-10-02.45017 - PUBLISHED●
30-03-11.90189 102-10-02.45673 NADCON●
.00577” .00656”●
0.178 m 0.176 m● ●
THIS CORRESPONDS TO A POSITIONAL●
DIFFERENCE OF 0.250 m (0.82 ft)●
NATIONAL OCEAN SERVICE
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COORDINATE COMPARISON
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld094.htm [4/10/2002 11:13:00 AM]
CONTINUOUSLY OPERATING REFERENCESTATIONS (CORS)
●
Installed and Operated by various Federal-State-localAgencies
●
●
NOAA/National Geodetic Survey●
NOAA/OAR Forecast Systems Lab●
U.S. Coast Guard - DGPS/NDGPS●
Corps of Engineers - DGPS●
FAA - WAAS/LAAS (Future)●
State DOTs●
County and City●
Academia●
Private Companies●
NATIONAL OCEAN SERVICE
CHL1 - CAPE HENLOPEN, DE
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CONTINUOUSLY OPERATING REFERENCE STATIONS (CORS)
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld095.htm [4/10/2002 11:13:00 AM]
CONTINUOUSLY OPERATING REFERENCESTATIONS (CORS)
●
Variety of “Geodetic Quality” Dual-Frequency●
Antennas and Receivers● ●
Allen-Osborne●
(SNR 8000 & SNR 12 ACT)●
Ashtech●
(Z XII3)●
Leica●
(SR9500 & CRS1000)●
Trimble●
(4000SSE & 4000SSI)●
NATIONAL OCEAN SERVICE
CHL1 - CAPE HENLOPEN, DE
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CONTINUOUSLY OPERATING REFERENCE STATIONS (CORS)
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld096.htm [4/10/2002 11:13:00 AM]
CONTINUOUSLY OPERATING REFERENCESTATIONS (CORS)
●
Some stations provide real-time code phaseobservations
●
●
5 - 15 - 30” post-process carrier phase observations● ●
Free access via Internet (RINEX-2 Format)● ●
More than 190 Station National Network●
NATIONAL OCEAN SERVICE
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CONTINUOUSLY OPERATING REFERENCE STATIONS (CORS)
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld097.htm [4/10/2002 11:13:01 AM]
CONTINUOUSLY OPERATING REFERENCESTATIONS (CORS)
NGS PROVIDES●
Reference Site Survey Monumentation●
Horizontal and Vertical NSRS Connections●
NAD 83, ITRF94, ITRF96, ITRF97 Coordinates●
Network Data Collection - Hourly & Daily●
Daily 3D Network Integrity Adjustment●
Public Data Distribution - Internet●
(http://www.ngs.noaa.gov/CORS/cors-data.html)●
2 Year On-Line Data Holding●
NATIONAL OCEAN SERVICE
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CONTINUOUSLY OPERATING REFERENCE STATIONS (CORS)
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld098.htm [4/10/2002 11:13:01 AM]
PPT Slide
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PPT Slide
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld099.htm [4/10/2002 11:13:01 AM]
PPT Slide
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PPT Slide
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld100.htm [4/10/2002 11:13:01 AM]
PPT SlideLUBBOCK REGIONAL REFERENCE POINT
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PPT Slide
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld101.htm [4/10/2002 11:13:02 AM]
CORS DATA SHEET
***ITRF 97***●
LUBBOCK RRP (LUBB), TEXAS● ●
Retrieved from NGS DataBase on 09/11/00 at 09:12:51.●
____________________________________________________________________________●
| |●
| Antenna Reference Point(ARP): LUBBOCK RRP CORS ARP |●
| -------------------------------------------------- |●
| PID = AF9540 |●
| |●
| |●
| ITRF97 POSITION (EPOCH 1997.0) |●
| Computed in July 2000 using every third day of data through 1999. |●
| X = -1092365.186 m latitude = 33 32 07.51076 N |●
| Y = -5209399.526 m longitude = 101 50 34.19481 W |●
| Z = 3504137.725 m ellipsoid height = 956.038 m |●
| |●
| ITRF97 VELOCITY |●
| Computed in July 2000 using every third day of data through 1999. |●
| VX = -0.0131 m/yr northward = -0.0081 m/yr |●
| VY = -0.0025 m/yr eastward = -0.0123 m/yr |●
| VZ = -0.0063 m/yr upward = 0.0008 m/yr |●
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CORS DATA SHEET
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld102.htm [4/10/2002 11:13:02 AM]
CORS DATA SHEET
***NAD 83***●
LUBBOCK RRP (LUBB), TEXAS● ●
Retrieved from NGS DataBase on 05/17/00 at 09:47:25.● ●
| |●
| NAD_83 POSITION (EPOCH 1997.0) |●
| Transformed from ITRF96 (epoch 1997.00) position in Apr. 2000. |●
| X = -1092364.646 m latitude = 33 32 07.49059 N |●
| Y = -5209400.933 m longitude = 101 50 34.16313 W |●
| Z = 3504137.818 m ellipsoid height = 957.145 m |●
| |●
| NAD_83 VELOCITY |●
| Predicted with HTDP_2.0 in Apr., 1996. |●
| VX = 0.0000 m/yr northward = 0.0000 m/yr |●
| VY = 0.0000 m/yr eastward = 0.0000 m/yr |●
| VZ = 0.0000 m/yr upward = 0.0000 m/yr |●
|____________________________________________________________________________|●
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CORS DATA SHEET
http://www.ngs.noaa.gov/PC_PROD/WorkShops/PPT/SPCS/tsld103.htm [4/10/2002 11:13:02 AM]