Extended Multiple Correlator for GPS Receivers

Hung Seok Seo, Il Heung Choi, Jin Pyo Gwak, Dong-Hwan Hwang and Sang Jeong Lee

Abstract:	This paper tries to analyze a signal detection probability of a GPS receiver under more realistic environments. The result shows that lower detection probability can be obtained when the phase differences among the codes in the correlation arms of a multiple correlator are larger. Furthermore, this paper proposes a new correlation scheme, named XMC(eXtended Multiple Correlator), which reduces the rate of degradation for the detection probability. The proposed XMC is different from the general multiple correlator in that a combined form of the locally generated codes is used for despreading. The performance of the proposed XMC is shown by the evaluating the detection probability and the mean acquisition time in a general SNR environments.
Published in:	Proceedings of the 15th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 2002) September 24 - 27, 2002 Oregon Convention Center Portland, OR
Pages:	1612 - 1618
Cite this article:	Seo, Hung Seok, Choi, Il Heung, Gwak, Jin Pyo, Hwang, Dong-Hwan, Lee, Sang Jeong, "Extended Multiple Correlator for GPS Receivers," Proceedings of the 15th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 2002), Portland, OR, September 2002, pp. 1612-1618.
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