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- W2610741862 abstract "Fast Fourier transform (FFT) has been widely used as an efficiently computational tool in GNSS applications to search the code phase shift between the incoming sequence and the local reference sequence with complex multiplications of order N·log2N. In this paper, we propose a novel approach, called Phase Coherence Acquisition (PCA) method, which uses much less computation than FFT to search correlation peak of PN codes. The computation required for PCA is on the order of N complex additions and no multiplications, which is significantly less than FFT. The PCA method first partitions the code sequence into a number of subsequences and then maps each subsequence to a complex phasor. Next, a recursive algorithm is designed to efficiently extract the code phase information and approach the true code phase step by step.The computational superiority of PCA becomes outstanding when applied sequence length N is very large such that FFT approach becomes infeasible." @default.
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- W2610741862 date "2011-09-23" @default.
- W2610741862 modified "2023-09-22" @default.
- W2610741862 title "A Novel Computationally Efficient Code Phase Acquisition Method" @default.
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