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UBC Theses and Dissertations

Kalman filter based orbit observability study Shorten, Roy Robert

Abstract

An Extended Kalman filter simulation technique was used to determine the observability of satellite orbits from one or two earth stations. It was found that range and range-rate measurements alone were insufficient for orbit determination. Either azimuth angle or elevation angle information were also required before an acceptable orbital estimate was obtained. However, range and range-rate measurements alone proved to be sufficient to improve the state estimates of approximately known orbits. Also if simultaneous range and range-rate measurements were available from two stations, orbit determination was possible. Various common orbital types were used throughout the study and only one pass of data was considered.

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