NSSDCA ID: 1992-052A-04
Mission Name: Topex/PoseidonThe Global Positioning System (GPS) Demonstration Receiver (GPSDR) on the TOPEX/Poseidon spacecraft was an experimental system provided by NASA which extracted pseudo-range (range plus a clock bias) from the transmission of the GPS Navstar satellites for precise orbit determination. The primary objectives of the GPSDR experiment were to demonstrate an alternate means of achieving precision orbit tracking accuracy and to provide significant enhancement to the ocean topography data. By using double-differenced range measurements from the anticipated 18-satellite operational GPS Navstar constellation and 7 or 8 ground stations, the global orbits for TOPEX can be determined to an accuracy of 10 cm. The GPS operates at 1227.6 MHz and 1575.4 MHz. The receiver was developed by Motorola for NASA JPL.
Mass: 28 kg
Power (avg): 29 W
Bit rate (avg): 0.7 kbps
Questions and comments about this experiment can be directed to: Dr. Dieter K. Bilitza
Name | Role | Original Affiliation | |
---|---|---|---|
Mr. Lee-Lueng Fu | Team Leader | NASA Jet Propulsion Laboratory | llf@pacific.jpl.nasa.gov |