Cycle Slip Detection and Fixing by MEMS-IMU/GPS Integration for Mobile Environment RTK-GPS

Tomoji Takasu, Akio Yasuda

Abstract:	The performance of the mobile environment RTK-GPS in urban areas is much degraded compared to the good condition under the open sky. One of the reasons for the degradation is cycle slips. The cycle slip forces discontinuity of integer ambiguity and worsens the condition of carrier-based positioning. To improve these conditions, it is effective to integrate INS to GPS. For RTK-GPS of mobile vehicles, INS can be used for the cycle slip detection and fixing. We propose a simple integration scheme of INS/GPS and RTK-GPS with a low-cost MEMS-IMU for the purpose. We conducted the field test to verify and evaluate the performance of the scheme. According to the results of the experiment, the scheme works effectively in the severe condition with many cycle slips.
Published in:	Proceedings of the 21st International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2008) September 16 - 19, 2008 Savannah International Convention Center Savannah, GA
Pages:	64 - 71
Cite this article:	Takasu, Tomoji, Yasuda, Akio, "Cycle Slip Detection and Fixing by MEMS-IMU/GPS Integration for Mobile Environment RTK-GPS," Proceedings of the 21st International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2008), Savannah, GA, September 2008, pp. 64-71.
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