Orbit Determination Methods For LEO Satellites From Probabilistic Analysis, Circular Motion Model And Single Pass Doppler Measurements

Abstract

The Doppler m easurements o f the telemetry radio signals nanosatellite CubeBel-1 for a single pass over the Belarusian State University ground station w ere carried out. Two methods for orbit determ ination of a small satellite are considered. The first m ethod is based on the SGP4 m odel and requires additional information from the NORAD TLE catalog o f the satellite orbital parameters. An unknown sm all satellite is identified using the NORAD TLE catalog based on a probabilistic estimation o f the elevation angle and the Doppler frequency shift o f receiving telemetry signals. The second method is based on processing experim ental measurements o f the Doppler frequency of the telemetry radio signals and Keplerian circular motion m odel for the sm all satellite. It does not require additional information from the NORAD database o f satellite orbital parameters.