Near-optimal strategies for sub-decimeter satellite tracking with GPSDecimeter tracking of low Earth orbiters using differential Global Positioning System (GPS) techniques is discussed. A precisely known global network of GPS ground receivers and a receiver aboard the user satellite are needed, and all techniques simultaneously estimate the user and GPS satellite orbits. Strategies include a purely geometric, a fully dynamic, and a hybrid strategy. The last combines dynamic GPS solutions with a geometric user solution. Two powerful extensions of the hybrid strategy show the most promise. The first uses an optimized synthesis of dynamics and geometry in the user solution, while the second uses a gravity adjustment method to exploit data from repeat ground tracks. These techniques promise to deliver subdecimeter accuracy down to the lowest satellite altitudes.
Document ID
19870015950
Acquisition Source
Legacy CDMS
Document Type
Other
Authors
Yunck, Thomas P. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Wu, Sien-Chong (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Wu, Jiun-Tsong (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
September 5, 2013
Publication Date
December 1, 1986
Publication Information
Publication: ESA Proceedings of the Second International Symposium on Spacecraft Flight Dynamics