TOPEX/POSEIDON GPS Demonstration Experiment Data

Global Positioning Satellite (GPS) measurements obtained from the on-board TOPEX/POSEIDON demonstration flight receiver and a global network of ground receivers are available from the GPS Data Handling Facility (GDHF) archive. Ground receiver observations are derived from a six station subset of the GPS global tracking network. The six TOPEX ground stations yielded 95 percent of the expected data during the six month demonstration phase from November, 1992 to April, 1993. For the same period, 98 percent of the available P-code tracking from the TOPEX flight receiver was obtained. Raw carrier phase and P-code pseudorange measurements are provided for the ground and flight receivers along with an additional file of calibrated and compressed flight receiver data...