Flight Results of GPS-Based Attitude Determination for the Canadian CASSIOPE Satellite

A. Hauschild, O. Montenbruck, R.B. Langley

Peer Reviewed

Abstract:	The paper presents attitude determination results of the ”GPS Attitude, Positioning and Profiling Experiment” (GAP) on board the CASSIOPE satellite using real flight data. The GAP payload consists of five minimally-modified commercial-offthe-shelf NovAtel OEM4-G2L receivers, which provide dual-frequency GPS measurements and allow for attitude and orbit determination of the satellite. To the authors’ knowledge, the CASSIOPE mission is the first space mission that provides dualfrequency observations for attitude determination. The data has been analyzed with a GPS attitude determination algorithm originally developed for the analysis of data from the ”Flying Laptop” mission. The paper presents attitude determination results for real flight data from the GAP experiment on the CASSIOPE satellite. The GPS-based solution for selected attitude maneuvers is compared to a reference orientation provided by the satellite’s star sensors. Furthermore, an analysis of the typical time-to-first-fix (TTFF) of attitude solution is provided. The advantage of dual-frequency ambiguity fixing compared to single-frequency will be assessed.
Published in:	Proceedings of the 2019 International Technical Meeting of The Institute of Navigation January 28 - 31, 2019 Hyatt Regency Reston Reston, Virginia
Pages:	686 - 695
Cite this article:	Updated citation: Published in NAVIGATION: Journal of the Institute of Navigation
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