Ambiguity Resolution of GPS Ll Carrier-Wave Measurements for High Precision Aircraft Navigation

Berud Tiemeyer, Gunther Schanzer, M. Elizabeth Cannon and Gang Lu

Abstract:	Investigations into very high precise aircraft position de- termination with the Global Positioning System are pre- sented. After a short introduction into the GPS code and carrier wave observables, the approach for carrier phase ambiguity resolution with single frequency Ll measure- ments in a kinematic environment is discussed. Land-based test results are given to demonstrate the cen- timeter accuracy achievable in position using pure carrier wave observations. The effect of multipath and its im- pact on both code and carrier wave is outlined. These algorithms are then applied to a flight test. Suc- cessful Ll ambiguity resolution during the flight test using a high performance single frequency lo-channel re- ceiver is shown as well as the high position accuracy after this process. Variations in the time to resolve the ambi- guities are discussed with respect to vehicle dynamics and monitor-aircraft separation.
Published in:	Proceedings of the 1994 National Technical Meeting of The Institute of Navigation January 24 - 26, 1994 Catamaran Resort Hotel San Diego, CA
Pages:	779 - 792
Cite this article:	Tiemeyer, Berud, Schanzer, Gunther, Cannon, M. Elizabeth, Lu, Gang, "Ambiguity Resolution of GPS Ll Carrier-Wave Measurements for High Precision Aircraft Navigation," Proceedings of the 1994 National Technical Meeting of The Institute of Navigation, San Diego, CA, January 1994, pp. 779-792.
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