Real-Time Ultra-Tight Integration of GPS L1/L2C and Vehicle Sensors

T. Li, M.G. Petovello, G. Lachapelle, C. Basnayake

Abstract:	Modern vehicle systems are often equipped with Global Positioning System (GPS) receivers and vehicle sensors to provide position, velocity and attitude information. A typical vehicle sensor setup is likely to have two horizontal accelerometers and one vertical gyroscope along with individual wheel speed sensors. Recently, with modernized GPS including the new civil signal on the L2 frequency band, namely L2C, they can be used to overcome some limitations experienced by the legacy L1 C/A signals. The combination of L1 and L2C signals in a GPS receiver expects to offer improved observability and therefore better navigation performance. This paper proposes and implements a real-time GPS receiver with ultra-tight integration of GPS L1/L2C and vehicle sensors for cost sensitive land vehicle applications. A field test was performed to evaluate both the real-time capabilities and navigation performance of the proposed system.
Published in:	Proceedings of the 2011 International Technical Meeting of The Institute of Navigation January 24 - 26, 2011 Catamaran Resort Hotel San Diego, CA
Pages:	725 - 736
Cite this article:	Li, T., Petovello, M.G., Lachapelle, G., Basnayake, C., "Real-Time Ultra-Tight Integration of GPS L1/L2C and Vehicle Sensors," Proceedings of the 2011 International Technical Meeting of The Institute of Navigation, San Diego, CA, January 2011, pp. 725-736.
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