Global Positioning System
Categories
Links
GPS Precise Orbits
http://www.ngs.noaa.gov/GPS/GPS.html
Global Positioning System satellite ephemerides ("orbits") information for the general public, from US NOAA. GPS precise orbits are derived using 24 hour data segments from the global GPS network. An informational summary file is provided to document the computation and to convey relevant information about the observed satellites, such as maneuvers or maintenance. Orbits generally are available 2 to 6 days after the observation.
Satellite Navigation and Positioning Group (SNAP)
http://www.gmat.unsw.edu.au/snap/snap.htm
SNAP is Australia's largest academic GPS research group specialising in high precision GPS technology and applications.
GPS Kwajalein
http://www.angelfire.com/ab/gpskwaj/index.html
GPS Ground Station on Kwajalein Island, photographs of the island and site. Links to others GPS sites.
GPS Control Base Station on Internet
GPS Base Stations located in New Zealand, Australia, and New Guinea. Download GPS data files for $40-$70 per day.
Septentrio Satellite Navigation
Dual frequency GPS & GLONASS, as well as EGNOS, WAAS and MSAT based on an in-house single baseband processor.
Wing Way Systems
http://www.vader-abraham.com/gpssoft.htm
Navigation-Wonder, a shareware GPS mapping navigation software including voice response system [Windows].
Australian Global Positioning Systems Society
A free membership society to bring together the delegates, sponsors, and exhibitors for the Satellite Navigation Conference and to foster, develop, and assist the Global Positioning System disciplines.
Internet-based Global Differential GPS
http://gipsy.jpl.nasa.gov/igdg/index.html
C-language software package for GPS-based real-time positioning and orbit determination. Includes system overview, technical papers, and a live demo .
Travel by GPS
Downloadable free GPS maps for travel adventures, self-guided tours, and outdoor activities. Map data includes waypoints and routes for use with handheld GPS and car navigation systems.
Hyperbolic Positioning Algorithm
http://ralph.bucher.home.att.net/project.html
An algorithm for obtaining an exact solution for the three dimensional location of a mobile given the locations of four fixed stations (like a GPS satellite or a base station in a cell) and the signal time of arrival (TOA) from the mobile to each station. From Ralph Bucher.
GPS Deformation Monitoring
http://www.cage.curtin.edu.au/~geogrp/research/res-mon.html
Objective is the development of a system for rapid and inexpensive monitoring of unstable slopes, such as pit walls, earth\rock slopes and dam walls using global satellite positioning technology.
David L. Wilson's GPS Accuracy Web Page
http://users.erols.com/dlwilson/gps.html
Global Positioning System Accuracy
The Global Positioning System: The History of GPS
http://www.beyonddiscovery.org/content/view.article.asp?a=458
The history and story of how the Global Positioning System evolved from the development of the world's most accurate timepieces, atomic clocks, by physicists looking into the nature of time. Adapted from an article written by MIT scientist Daniel Kleppner.
GPS Site from Univ of Texas
http://www.colorado.Edu/geography/gcraft/notes/gps/gps_f.html
Global positioning system overview and bibliography.
GIS Services
Specializes in ArcView GIS training and provides commodities, services and training for implementing and integrating solutions with GIS, GPS, AVL, internet mapping and satellite imagery.

