Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986asdy.conf..853s&link_type=abstract
IN: Astrodynamics 1985; Proceedings of the Conference, Vail, CO, August 12-15, 1985. Part 2 (A86-43201 20-12). San Diego, CA, Un
Astronomy and Astrophysics
Astronomy
Orbital Position Estimation, Satellite Tracking, Stationary Orbits, Synchronous Satellites, Communication Satellites, Minimum Variance Orbit Determination, Monte Carlo Method, Stationkeeping
Scientific paper
This paper deals with colocation of two satellites sharing the same geostationary parking slot. The impact of tracking measurement accuracy and orbit-determination accuracy on the prediction of satellite longitude has been studied using the Monte-Carlo simulation method. The results have been checked against the primary requirement that the 3-sigma uncertainty in longitude prediction lies within half the width of this parking slot (+ or - 0.5 deg). Thus the tracking measurement accuracy satisfying the above requirement has been derived. Then an algorithm for colocation of two satellites on a real-time basis has been developed to permit the longitudinal separation between the satellites to be monitored along with the orbital elements during mission operations.
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