An Initial Synchronization Method for DGPS Reference Receivers in Noisy Environment

S.H. Park, D.J. Cho, S. Oh, S.H. Suh

Abstract:	The previous initial synchronization method for DGPS reference receivers adopts not only the coherent integration method but also the non-coherent integration method in order to enhance sensitivity under noisy environment. However, under noisy environment, the previous GPS initial synchronization method causes the non-coherent integration loss which is a major factor among losses that can be caused during GPS signal acquisition. The non-coherent integration loss also increases with the strength of the received noise. In this paper, a novel GPS initial synchronization method using differential non-coherent integrator is proposed to effectively enhance sensitivity of DGPS reference receiver under noisy environment. This paper presents that the proposed GPS initial synchronization method suppresses the non-coherent integration loss through postprocessing simulation. Furthermore, with regard to the mean acquisition time, it is shown that the proposed GPS initial synchronization method is superior to the previous GPS initial synchronization method.
Published in:	Proceedings of the 19th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2006) September 26 - 29, 2006 Fort Worth Convention Center Fort Worth, TX
Pages:	1269 - 1275
Cite this article:	Park, S.H., Cho, D.J., Oh, S., Suh, S.H., "An Initial Synchronization Method for DGPS Reference Receivers in Noisy Environment," Proceedings of the 19th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2006), Fort Worth, TX, September 2006, pp. 1269-1275.
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