CARTEL: A method to calibrate S-band ranges with geostationary satellites

Details CARTEL: A method to calibrate S-band ranges with geostationary satellites CARTEL: A method to calibrate S-band ranges with geostationary satellites

Dec 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986esasp.255..467g&link_type=abstract

In ESA Proceedings of the Second International Symposium on Spacecraft Flight Dynamics p 467-471 (SEE N87-25354 19-18)

Statistics

Computation

Calibrating, Ground Stations, Satellite Tracking, Superhigh Frequencies, Ultrahigh Frequencies, Orbit Calculation, Orbital Position Estimation, Position Errors

Scientific paper

An intersite tracking campaign was organized, with 4 S-band stations, for a period of 1 wk to show how the most precise orbit can be computed with the operational software. This precise orbit served as a reference in order to evaluate what can be achieved with one single station with range and angular measurements (a typical configuration used for stationkeeping of geostationary satellites). Orbit computation implied numerical integration with gravitational (Earth, Moon, and Sun) and solar radiation pressure as forces acting on the satellite. Arc lengths of 2 days gave initial state vectors which were compared every day. A precision of 10 m is achieved. However, an analysis of the influence of several parameters entering the orbit computations reveals that the absolute accuracy is of the order of 100 m, since modeling perturbations were neglected in the operational software (polar motion for example). This reference orbit allows estimation of systematic errors for other tracking antennas.

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