Performance Comparison between Point and Differential GPS/INS Systems

Yufeng Zhang and Yang Gao

Abstract:	Although double differenced GPS measurements have been widely used in GPS/INS integrated systems, the advent of precise point positioning (PPP) methodology, which is capable of providing position accuracy at cm~dm level, has made it feasible to the development of point GPS/INS systems using un-differenced GPS measurements [Gao and Shen 2002]. This paper will investigate the achievable accuracy for a point GPS/INS system. The performance comparison between the point and differential GPS/INS will be conducted both theoretically and by computer simulation. Some field tests will be presented and the results will be assessed to confirm the theoretical result.
Published in:	Proceedings of the 18th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2005) September 13 - 16, 2005 Long Beach Convention Center Long Beach, CA
Pages:	2504 - 2510
Cite this article:	Zhang, Yufeng, Gao, Yang, "Performance Comparison between Point and Differential GPS/INS Systems," Proceedings of the 18th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2005), Long Beach, CA, September 2005, pp. 2504-2510.
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