Fast Acquisition Algorithm of GPS L1C Signal Based on the Sparse Fast Fourier Transform

Dongkai Sun, Xiaowei Cui, Yonghui Zhu, Mingquan Lu

Peer Reviewed

Abstract:	L1 Civil (L1C) signal is one of the emerging signals designed for GPS. Because of many innovative features, legacy method is not suitable for L1C receiver. In the acquisition module, TMBOC and new PRN code make the search space of the L1C code phase 20 times larger than that of C/A code, which costs much more computations. To speed up the acquisition process, XFAST, Dual-Folding and Sparse Fast Fourier Transform (SFFT) have been put forward. But they can’t be used for L1C directly. Fully considering the characteristics of L1C signal, this paper proposes a fast acquisition algorithm of GPS L1C signal based on SFFT. The performance of the proposed algorithm is also analyzed.
Published in:	Proceedings of the 2015 International Technical Meeting of The Institute of Navigation January 26 - 28, 2015 Laguna Cliffs Marriott Dana Point, California
Pages:	484 - 492
Cite this article:	Sun, Dongkai, Cui, Xiaowei, Zhu, Yonghui, Lu, Mingquan, "Fast Acquisition Algorithm of GPS L1C Signal Based on the Sparse Fast Fourier Transform," Proceedings of the 2015 International Technical Meeting of The Institute of Navigation, Dana Point, California, January 2015, pp. 484-492.
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