Vehicle Navigation Using GPS Aided By Speed and Heading Information: Simulation Results

Seong Pil Yoon and John B. Lundberg

Abstract:	Because of Selective Availability (SA), the navigation accuracy of a vehicle using a standalone GPS system has been degraded. One of the methods to cope with this problem is to integrate other navigation sensors. Dead-reckoning sensors provide inexpensive solutions over expensive inertial sensors such as accelerometers. However, to get the most out of the integrated system, proper weights must be found for the two position estimates, one from the GPS receiver and the other which is the previous position estimate mapped to the current epoch using the information from the dead-reckoning sensors. This paper shows the effect of the different values of the weights on the final estimate of the position in a simulated noisy environment using a simple filtering algorithm introduced in this paper. Results show that dead-reckoning information even with high noise increases the navigation accuracy of the integrated GPS system.
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:	945 - 951
Cite this article:	Yoon, Seong Pil, Lundberg, John B., "Vehicle Navigation Using GPS Aided By Speed and Heading Information: Simulation Results," 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. 945-951.
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