PHILIPPINE ACTIVE

GEODETIC NETWORK (PageNET)

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NAMRIA Tour of Facilities

What is PageNET?

the country’s new positioning infrastructure which utilizes signals from global navigation satellite systems (GNSS).

a network of continuously operating reference stations that provide 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.

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Each AGS is equipped with a geodetic grade GNSS receiver and antenna,

supplementary sensors (meteorological and tilt), router, uninterrupted power supply (UPS) system, back-up battery,

and other accessories.

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

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

distribution.

DCC AGS

Elements of PageNET

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Active Geodetic Station

Data and Control Center

How it Works

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DCC

Internet

PageNET Data Flow

PageNET Data Flow

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Roof-based Stations

Ground-based Stations

Wireless /

Leased line

IP-VPN

Network

Data coming from the stations

are being processed at the

DCC.

Data are

distributed

through the

internet

(13 Stations Nationwide)

Philippine Active Geodetic Network

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PTAG : TAGUIG CITY, MM

PURD : URDANETA CITY

PFLO : FLORIDABLANCA

PCAB : CABANATUAN CITY

PTGY : TAGAYTAY

PCAN : CANDELARIA

First Phase of Implementation (FY-2007) Scope: Installation of 2 ground- and 4 roof- based AGS and the Data and Control Center (DCC)

Phase I

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Phase I

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PTAG

PURD

PFLO

PTGY

PCAB PCAN

Phase II

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Second Phase of Implementation (FY-2009) Scope: Installation of seven (7) sites throughout the country.

Luzon

PBAY : Bayombong, Nueva Vizcaya

PLEG : Legazpi City, Albay

PPPC : Puerto Princesa City, Palawan

Visayas

PILC : Iloilo City, Iloilo

PTAC : Tacloban City, Leyte

Mindanao

PSUR : Surigao City, Surogao del Norte

PGEN : Gen. Santos City, South Cotabato

Phase II

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PTAC (Tacloban City, Leyte)

PSUR (Surigao City, Surigao del Norte)

PILC (Iloilo City, Iloilo)

PGEN (General Santos City)

Phase II

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PPPC (Puerto Princesa City, Palawan)

PBAY (Bayombong, Nueva Vizcaya)

PLEG (Legazpi City, Albay)

Land Surveying

Geographic Information System (GIS)

Marine Navigation

Aviation

GPS

Antenna

Oceanography

Military

Applications

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1. Surveying

Actual Applications

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ZERO Order Network Observation and Inter- Island BM connections

2. GIS Mapping

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.

Actual Applications

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GPS Positions after post-

processing

GPS Positions in

autonomous mode

3. Aerial Navigation

PTAG and PFLO were used as reference by Aerometrex to calibrate their aerial camera to be used in Digital Aerial Photography Project in Manila and Rizal.

Actual Applications

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4. Scientific Studies

APRGP and APREF

Actual Applications

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Asia and the Pacific Regional Geodesy Project

(Permanent Committee for GIS Infrastructure for Asia

and the Pacific) Asia-Pacific Reference Frame

Project

Aims to create and maintain an accurate

and densely realized geodetic framework,

based on continuous observation and

analysis of GNSS data

Establish station coordinates and velocities in an

international reference frame

Establish problems caused by tectonic movements

Establish a regional horizontal and vertical datum and

develop transformation parameters between each local

system and the regional datum

PageNET recently participated in the APRGP 2011 Campaign

which ran from 11-17 September 2011. Data from 9 of the 13

stations were submitted to PCGIAP.

1. 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 PageNET is helpful in detecting ground deformation/displacement.

Research on Applications of PageNET

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2. GPS Meteorology

The Philippines, being an archipelagic nation, stands to be severely affected by climate change.

PageNET may be used to quantify the precipitable water vapor content of the atmosphere.

As the GPS signal travels through the atmosphere, it experiences delays that can be converted into atmospheric water vapor data.

Quantifying this atmospheric variable enhances the accuracy of weather forecasting and helps in monitoring climate change.

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Research on Applications of PageNET

Online Access GNSS data sets that are being

gathered by the PageNET can be conveniently distributed to the users through the internet.

PageNET web service is run by SpiderWEB software which allows the network administrators to keep track of data, downloads, users and billing.

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

PageNET Website

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Thank you!

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