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Improvement of the positioning accuracy of a software-based GPS receiver using a 32-bit embedded microprocessor

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4 Author(s)
Sato, G. ; Syst. LSI Dev. Center, Mitsubishi Electr. Corp., Japan ; Asai, T. ; Sakamoto, T. ; Hase, T.

This paper describes the improvement of the positioning accuracy of a GPS receiver, using software to apply the GPS to compact, hand-held devices. Differential GPS (DGPS) with a software FM demodulator, and a modified Kalman filter is proposed and applied to a GPS receiver. The positioning accuracy is, 35 m with a standalone GPS, 9 m with DGPS and 15 m with a Kalman filter. With both methods, the positioning accuracy is drastically improved to 2 m

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Consumer Electronics, IEEE Transactions on  (Volume:46 ,  Issue: 3 )