colorado state plane coordinate system...colorado spcs 2022 options option 1 single zone...
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Colorado State Plane Coordinate System
2022
John Hunter, PLSColorado NGS Geodetic Coordinator
2019 2020 2021 2022
Outreach to Geospatial Community & Collect Feedback on State Plane Preferences
Outreach to Geospatial Community to Communicate the Colorado SPCS details
NGS review of LDP’s submitted by Colorado
New Reference Frames (NATRF2022) & SPCS Released by NGS
Daft Colorado SPCS Plan for Stakeholder approval
Continue designing LDP’s Continue designing LDP’s (if Needed)
Submit Colorado SPCS Plan to the NGS
NGS to Beta Release the NATRF22 Reference Frames
Begin designing Low Distortion Projections (LDP)
Submit Colorado LDP Designs
Colorado SPCS 2022 Timeline
Additional Information on Colorado SPCS 2022
https://plsc.net/docs/SideShots_Nov18_final.pdf
New Reference FramesNATRF 2022
New Colorado State Plane Coordinate System 2022
https://www.plsc.net/docs/SideShots_May2019_web.pdf
Colorado SPCS 2022 Options
OPTION 1
Single Zone (State-wide)
LDP’s Allowed
OPTION 2
Single Zone (State-wide)
LDP’s Allowed
“Default Designs” (Same Boundaries as Current Zones)
OPTION 3
Single Zone (State-wide)
LDP’s Allowed
“50 ppm Designs” (Colorado
Requests NGS to Design)
Colorado SPCS 2022 Options
Option 3Option 1
Deadline to Submit Feedback is August 31, 2019
https://docs.google.com/forms/d/1vAU4hom2zfoAoNTD4vqivczvVpyTGypwumJbjOKzGUA/edit
Provide Your Feedback
PPM δ Distortion in Feet/Mile
Dimensionless Ratio
Comments
20 PPM 0.1 ft/mi 1:50,000 Common LDP Criterion
40 PPM 0.2 ft/mi 1:25,000 Max δ for LDP
50 PPM 0.3 ft/mi 1:20,000 Max δ for NGS Designs
100 PPM 0.5 ft/mi 1:10,000 NAD83 Criterion (@Ellipsoid)
200 PPM 1.1 ft/mi 1:5,000 Common δ under NAD83 @ ground
400 PPM 2.1 ft/mi 1:2,500 Common δ under NAD83 @ ground
1:50,000 and up Commonly Achieved Traverse Closures… (Plus Network Error)
Federal Geographic Data CommitteeGeospatial Positional Accuracy Standards
AEC Surveying and Mapping StandardsClosure Errors
Second-Order, Class I……………..1:50,000Second-Order, Class II..…………..1:20,000Third-Order, Class I….……………...1:10,000Third-Order, Class II…………………..1:5,000
Existing NAD83 Distortion (ppm)
Existing NAD83 Distortion (ppm)
Colorado SPCS 2022 State-Wide Zone
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Low Distortion ProjectionLDP
LinkedIn@ John Hunter, PLS
Colorado NGS Geodetic Coordinator
PLSChttps://www.plsc.net/geodetic_resources.php
Twitter@SPCS22Colorado
NGS Website THANK YOU