DGPS Kinematic Carrier Phase Signal Simulation Analysis for Precise Aircraft Velocity Determination

J. Hebert, J. Keith, S. Ryan, M. Szannes, G. Lachapelle and M.E. Cannon

Abstract:	A Northern Telecom SIB2760 phase coherent differential GPS simulator is used to analyse the velocity accuracy achievable under aircraft dynamics using selected receiver technologies. The results of two C/A code Ll receiver types are presented herein, namely an Ashtech G-12TM, and a NovAtel PowerPack OEM2 equipped with special Precise Velocity (PV) finnware which improves the receiver generated Doppler measurements. Simulated aircraft trajectories with velocities up to 120 m/s, accelerations up to 50 m/s*, and jerks up to 25 m/s3, are used. The code and carrier phase observables are processed in single difference mode with the velocity estimates based solely on the Doppler observables. The accuracy of receiver generated Doppler-derived velocities and that of integrated carrier phase-derived velocities are tested as a function of aircraft dynamics.
Published in:	Proceedings of the 53rd Annual Meeting of The Institute of Navigation (1997) June 30 - 2, 1997 Albuquerque, NM
Pages:	607 - 617
Cite this article:	Hebert, J., Keith, J., Ryan, S., Szannes, M., Lachapelle, G., Cannon, M.E., "DGPS Kinematic Carrier Phase Signal Simulation Analysis for Precise Aircraft Velocity Determination," Proceedings of the 53rd Annual Meeting of The Institute of Navigation (1997), Albuquerque, NM, June 1997, pp. 607-617.
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