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The Philippine Active Geodetic Network(PageNET)

Engr. Ma. Almalyn BalladaresGeodesy Division – NAMRIA

Poolside Pavilion, Dusit Thani Manila26 May 2017

Mapping the Philippines, Linking the World

OUTLINE

1. What is PageNET

2. Timeline

3. Components

4. Network Design

5. Applications

6. Milestones

7. Next steps

Philippine Active Geodetic Network (PageNET)Dusit Thani Manila, 26 May 2017

Topographic Base

Mapping

Geodetic Reference

System Development

Geospatial Information Managemen

t

Environmental and Natural

Resources Mapping

Hydrography, Physical

Oceanography and

Nautical Charting

Maritime Zones and Boundaries

Mapping

NAMRIA Core Functions


A network of permanently installed continuously operating reference stations (CORS) that gathers signals from Global Navigation Satellite System (GNSS)

Provides real-time, high-precision geographic position data via the Internet.

Data generated by the network may be used for surveying and mapping, aviation, navigation, military, scientific research and monitoring, and agriculture, among others.

Philippine Active Geodetic NETwork

(x,y,z)

(x,y,z)

(x,y,z)

(x,y,z)(x,y,z)

What is PageNET?


Global Navigation Satellite System

GPS31/32

GLONASS24/27

GALILEO11/18

COMPASS20/27

Refers to a constellation of satellites providing signals from space transmitting positioning and timing data.

GNSS


Continuously Operating Reference Station

Permanently installed geodetic quality receiver and antenna positioned over a monument or point which collected GPS data 24 hours a day, every day of the year.

William E. Strange, the Chief Geodesist of the National Geodetic Survey

CORS


Passive vs. Active

Mapping and Geodesy Branch, National Mapping and Resource Information Authority


Typical Passive Geodetic Control Points

Ground-based InstallationMade of concrete pillar embedded on a ~3m-deep drilled hole. Polymer c-bar reinforcement assembly is also embedded on the concrete pillar for stability.

Roof-based InstallationPillars are anchored on reinforcement bars of the building using four (4)

20mm expansion bolts.

Typical Active Geodetic Station


Absolute Positioning

• Consists of one GNSS receiver + four ormore satellites

• Expected precision = 5 to 10 meters

Relative Positioningvs.

• Data from a precisely known referencestation is used to correct the position datagathered from a roving GNSS receiver

• Technique used to enhance the quality ofpositional data gathered using GNSSreceivers.

• Expected precision = sub-meter

How it works


Inception and Development

2007 2008 2009 2010 2011 2012 2013

PBASPTAG PURD PLEGPFLO

PageNET was initially

conceptualized to support the Philippine

Reference System of 1992 (PRS92)

Project

2 GBS and 4 RBS

installed

Real-time and post-process

services made available to the public

5 GBS and 2 RBS

installed

PTAG was included in

the IGSNetwork

• 4 RBS installed

• Launched 1-yr. free access promo

1 RBS installed

Timeline

2014 2015 2016

PGENPPPCPNDOPCDN PBIS PTARPDIP

6 roof-based station installed • PPPC and PGEN were included in IGS Network• 5 roof-based stations installed

2 ground-based and

8 roof-based stationsinstalled

Inception and Development

Timeline


Active Geodetic Station (AGS) Data & Control Center (DCC)

Serves as the PageNET’s Information Communication Technology (ICT) facility

for online data processing, network monitoring, as well as data storage and

distribution.

Continuously operating reference stations (CORS) that gather GNSS data for positioning,

navigation & timing (PNT) applications.

Usually unstaffed, permanently configured facilities that operates 24/7/365.

System Components



GNSS Antenna

Tilt

Sensor

Met Sensor

Pillar

Sensors

a. GNSS Antenna

Collects 4 dimensional satellite data (latitude, longitude, height) time of the AGS.

b. Tilt Sensor

Records the movement of the antenna pillar on the X and Y Plane.

c. Meteorological (Met) Sensor

Collects the Atmospheric data ( Pressure, Temperature, Rel. Humidity) at the AGS.

Active Geodetic Station (AGS)


System Components


Solar

Panels

Equipment Panel

a. GNSS Receiver

Receive the data coming from the sensor.

b. Modem

Connects the AGS to the DCC.

c. Solar Power System

Provides power supply.

d. Back-up Batteries

Supports the AGS in case of power outages.

Active Geodetic Station (AGS)

GNSS

Receiver

Solar Charge

Controller

Back-up

Batteries

Fiberglass

Enclosure

System Components



Luzon1. Basco, Batanes2. Sta. Ana, Cagayan3. Batac City, Ilocos Norte4. Tuguegarao City, Cagayan5. Candon City, Ilocos Sur6. Bayombong Nueva Vizcaya7. Urdaneta City, Pangasinan8. Cabanatuan City, Nueva Ecija9. San Narciso, Zambales10.Floridablanca, Pampanga11.San Rafael, Bulacan12.Mariveles, Bataan13.Taguig City, Metro Manila14.Sta. Cruz, Laguna15.Tagaytay City, Cavite16.Candelaria, Quezon17. Naga City, Camarines Sur18.Legazpi City, Albay19.Calapan City, Oriental Mindoro20.Mogpog, Marinduque21.Masbate City, Masbate22.Puerto Princesa City, Palawan23.El Nido, Palawan24.Tarlac City, Tarlac

Visayas25. Kalibo, Aklan26. Iloilo City, Iloilo27. Tacloban City, Leyte28. Cebu City, Cebu29. Dumaguete City, Negros

Oriental30. Catarman, Northern Samar

Mindanao31. Surigao City, Surigao del Norte32. Bislig City, Surigao del Sur33. Tagoloan City, Misamis Oriental34. Dipolog City, Zamboanga del Norte35. Zamboanga City, Zamboanga del Sur36. Cotabato City, Maguindanao37. Davao City, Davao del Sur38. Gen. Santos City, South Cotabato

Fiducial Network



Luzon1. Basco, Batanes2. Sta. Ana, Cagayan3. Batac City, Ilocos Norte4. Tuguegarao City, Cagayan5. Candon City, Ilocos Sur6. Bayombong Nueva Vizcaya7. Urdaneta City, Pangasinan8. Cabanatuan City, Nueva Ecija9. San Narciso, Zambales10.Floridablanca, Pampanga11.San Rafael, Bulacan12.Mariveles, Bataan13.Taguig City, Metro Manila14.Sta. Cruz, Laguna15.Tagaytay City, Cavite16.Candelaria, Quezon17. Naga City, Camarines Sur18.Legazpi City, Albay19.Calapan City, Oriental Mindoro20.Mogpog, Marinduque21.Masbate City, Masbate22.Puerto Princesa City, Palawan23.El Nido, Palawan24.Tarlac City, Tarlac

Visayas25. Kalibo, Aklan26. Iloilo City, Iloilo27. Tacloban City, Leyte28. Cebu City, Cebu29. Dumaguete City, Negros

Oriental30. Catarman, Northern Samar

Mindanao31. Surigao City, Surigao del Norte32. Bislig City, Surigao del Sur33. Tagoloan City, Misamis Oriental34. Dipolog City, Zamboanga del Norte35. Zamboanga City, Zamboanga del Sur36. Cotabato City, Maguindanao37. Davao City, Davao del Sur38. Gen. Santos City, South Cotabato39. Tagum City, Davao del Norte

Fiducial Network

1 Shared Station

39 AGS Established



Luzon1. Baguio City, Benguet2. Alaminos City, Pangasinan3. San Luis, Aurora4. Masinloc, Zambales5. Capas City, Tarlac6. Carranglan Nueva Ecija7. San Juan, Batangas8. Calatagan, Batangas9. Infanta, Quezon10.Gumaca, Quezon11.San Franciso, Quezon12.Pacarale, Camarines Norte13.Esperanza, Masbate

Visayas14. Pilar, Capiz15. Cadiz City, Negros Occidental16. Kabankalan City, Negros

Occidental17. Bogo City, Cebu18. Tagbilaran City, Bohol19. Ormoc City, Leyte20. Catbalogan City, Samar21. Borongan City, Eastern Samar22. San Juan, Southern Leyte

Mindanao23. Digos City, Davao del Sur24. Cabadbaran City, Surigao del Sur25. Mati City, Davao Oriental26. Valencia City, Bukidnon27. Pagadian City, Zamboanga del Sur28. Ozamis City, Misamis Occidental29. Marawi City, Lanao del Sur30. Tacurong City, Sultan Kudarat31. Tandag City, Surigao del Sur32. Don Carlos, Bukidnon

2016 – Targets for Site Reconnaissance

Densified Network



Luzon1. Baguio City, Benguet2. Alaminos City, Pangasinan3. San Luis, Aurora4. Masinloc, Zambales5. Capas City, Tarlac6. Carranglan Nueva Ecija7. San Juan, Batangas*8. Calatagan, Batangas9. Infanta, Quezon10.Gumaca, Quezon11.San Franciso, Quezon12.Pacarale, Camarines Norte13.Esperanza, Masbate

Visayas14. Pilar, Capiz15. Cadiz City, Negros Occidental16. Kabankalan City, Negros

Occidental17. Bogo City, Cebu18. Tagbilaran City, Bohol19. Ormoc City, Leyte20. Catbalogan City, Samar21. Borongan City, Eastern Samar*22. San Juan, Southern Leyte

Mindanao23. Digos City, Davao del Sur24. Cabadbaran City, Surigao del Sur25. Mati City, Davao Oriental26. Valencia City, Bukidnon27. Pagadian City, Zamboanga del Sur*28. Ozamis City, Misamis Occidental29. Marawi City, Lanao del Sur30. Tacurong City, Sultan Kudarat31. Tandag City, Surigao del Sur*32. Don Carlos, Bukidnon*


Densified Network

Completed Recon

* For Establishment (2017)


Luzon1. Burgos, Ilocos Norte2. Vigan City, Ilocos Sur3. Aparri, Cagayan4. Gattaran, Cagayan5. Ilagan City, Isabela6. Santiago City, Isabela7. Tabuk, Kalinga8. San Fernando City, La Union 9. Magalang, Pampanga10.Brooke's Point, Palawan11.Pagasa Island12.Sorsogon City, Sorsogon13.Virac, Catanduanes14.Esperanza, Masbate

Visayas15. Calbayog City, Samar16. Sipalay City, Negros Occidental17. Tuburan, Cebu

Mindanao18. Ozamiz City, Misamis

Occidental19. Koronadal, South Cotabato20. Maitum, Sarangani


Completed Recon

Densified Network


Multi-GNSS Services1.RINEX download for post-processing2.Coordinate computation3.Single-base Real Time Kinematic

Service4.Network RTK for Mega Manila area


Geodetic Services

Accessing the Serviceo Through the internet at

http://pagenet.namria.gov.ph

Web portalso Beta website

http://namria.gov.ph/pagenet

o Facebook: Philippine Active Geodetic Network - PageNET

How to Access the Services


http://pagenet.namria.gov.ph/

http://namria.gov.ph/pagenet

Inter-island Benchmark Connection

Zero Order Network

Development of geodetic control networka. In support of PRS92 Projectb. Reference for Zero Order Control Networkc. Reference for 1st-4th Order Control Networkd. Reference for Inter-island benchmarkconnectione. Reference for GNSS network for maintenance ofGravity stationsf. In support of Migration to a Geocentric datum

Primary control for various surveysa. Land surveyingb. Deformation monitoringc. Utilities mappingd. Aerial photography

17 Nov 201004 Dec 2012

Applications


22

Utilities Surveying & Mapping

Maynilad Water Services, Inc. utilized PageNETstations as reference for the following surveying and mapping works: Leak detection

- Mapping the location of leaks on primary pipes to lower the level of Non-Revenue Water (NRW)

Water Network Asset Mapping

- GPS pipe alignment survey for on-going projects and reproduction of as-built plan for facilities

Waste Water Mag’t. Mapping

- GNSS-RTK survey of all sewer manholes

Geo-Location of Customer Meters and Premise

- Combination of GNSS-RTK & Total Station to survey & map the 1,065,000 customer meters, plus the corresponding premises from North of Caloocan to Cavite City

Leak detection of 70,000m

primary pipes

GPS survey for 1,600 mm pipe laying project & preparation of As-built Plan

Geo-location using GNSS-RTK

Applications

Photogrammetry

PFLO station was used as reference in the orthorectification of a high-resolution satellite image in support of utilities mapping

Pilot testing provided results of up to 7cm accuracy.

GPS Positions after post-processingGPS Positions in autonomous mode

Applications

Crustal Deformation Studies

The Philippines is composed of several tectonic blocks, each moving on its own direction, and with different velocities

The movement of the tectonic blocks has its corresponding effect to the accuracy of the geodetic control network.

The availability of continuous geographic position data from PageNETis helpful in detecting ground deformation/displacement.

Data from PageNET stations are being shared w/ the Philippine Institute of Volcanology and Seismology (PHIVOLCS) for crustal deformation applications

Plates and Active Faults VS Geodetic Control Network

Applications

Earthquake Monitoring Source: Phivolcs

Distance = ~105

km

PILC (AGS) Epicenter

2012 February 06 event11:49:11 AM (PST)

The surface waves from the earthquake were detected by PILC after ~60sec.

Applications


Earthquake Monitoring

Surigao M6.7 Earthquake

10 February 2017

Applications


Scientific Research

Inclusion in IGS Network

- PTAG, PPPC, PGEN

Contributor to APREF Project

- all stations

- from 2008 data

Participation in APRGP Campaigns

- since 2009

Asia-Pacific Reference Frame ProjectAsia and the Pacific Regional Geodesy Project (APRGP)

International GNSS Service (IGS)


Applications

Scientific Research

Undergraduate research studies in collaboration w/ the University of the Philippines

Comparison of the horizontal accuracy of Single base RTK, Network RTK within the Mega-Manila sub-network (Braza , C. and Lim, J.)

Analysis of deformation processesresulting from the 2013 Magnitude 7.2 Bohol earthquake (Bauzon and Noveloso)

Mega Manila Network RTK(7 AGS) 6 Test Points

Applications


Completed installation of 39 AGS nationwide

Acquired Scientific GNSS Processing Software (Bernese) and Started processing of daily data

Ongoing participation in local and international scientific studies

• IGS

• APREF/APRGP

• MGM-Net

• PHIVOLCS

• R&D Activities

Offered the PageNET services to the public


Milestones

• Install 5 AGS for FY-2017

• Expand coverage nationwide

• Additional Network-RTK coverage

• Additional Tier2 stations

• Incorporate other CORS into PageNET (e.g., PPRMF sites)

• Research and development on the applications of PageNET

• Review of PageNET operations

• Migration into a geocentric datum

Next Steps


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