A Truth System for Evaluating a Relative Solution Between Two Moving Platforms

Greg Johnson

Abstract:	Raytheon Aircraft developed the first aircraft carrier approach and landing system based on Kinematic Carrier Phase Tracking (KCPT). This system calculated a relative solution accurate to 1 foot 95% between two moving platforms, by integrating a Relative KCPT (RKCPT) solution with inertial data from both moving platforms. Raytheon Aircraft tested this system in October 1996 by flying approaches in a Beech 1900D commuter aircraft to a moving van. One of the challenges to developing this relative approach and landing system is to evaluate its accuracy. No independent relative KCPT solution existed at the time. Raytheon Aircraft solved this problem by manipulating two post-processed KCPT solutions to a fixed base using an off-the-shelf product. This post-processed relative solution was then used to evaluate the real-time RKCPT solution. The accuracy of this off-the-shelf product was verified in flight test using a NASA operated laser as the truth source. This paper will show the laser data that verified the off-the-shelf product. This paper will also show highlights of the RKCPT flight testing where the subject truth source was implemented.
Published in:	Proceedings of the 10th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1997) September 16 - 19, 1997 Kansas City, MO
Pages:	1185 - 1187
Cite this article:	Johnson, Greg, "A Truth System for Evaluating a Relative Solution Between Two Moving Platforms," Proceedings of the 10th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1997), Kansas City, MO, September 1997, pp. 1185-1187.
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