NDLI: Robust and precise position determination for vehicles using GPS carrier phase measurements

Content Provider	IEEE Xplore Digital Library
Author	Eunsung Lee Young Min Yoon Moon Beom Heo Ki Wook Nam
Copyright Year	2007
Description	Author affiliation: KARI, Daejeon (Eunsung Lee; Young Min Yoon; Moon Beom Heo; Ki Wook Nam)
Abstract	An algorithm for resolving the GPS integer ambiguity is introduced. This algorithm is called the improved multiple-hypothesis Wald sequential probability ratio test (IMHWSPRT) and is based on a log formulation of the multiple-hypothesis Wald sequential probability ratio test (MHWSPRT). In this method the dynamic information is used as constraint. It speeds up the resolution convergence time of the integer ambiguity of GPS carrier phase measurements. It is known that the improvement of convergence speed of the MHWSPRT is due to the increase the probability ratio with the use of the dynamic information constraint. The dynamic information make the state error covariance small, it helps to speed up the resolution convergence time. But this method has weakness when the system model has faults. It is possible to reduce the effect of the faults by using the null matrix of the measurement model matrix. It is shown that IMHWSPRT is robust with the system model faults. The performance of IMHWSPRT is demonstrated using numerical simulations.
Starting Page	2119
Ending Page	2122
File Size	658146
Page Count	4
File Format	PDF
ISBN	9788995003862
DOI	10.1109/ICCAS.2007.4406680
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-10-17
Publisher Place	South Korea
Access Restriction	Subscribed
Rights Holder	ICASE
Subject Keyword	Carrier Phase Measurement Phase measurement Satellite navigation systems Precise Position GPS Vehicle dynamics Equations Global Positioning System Convergence Sequential analysis Wald Test Position measurement Robustness Testing Ambiguity
Content Type	Text
Resource Type	Article

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