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- W2371749287 abstract "In high dynamic communication systems, there exists a larger Doppler shift of the carrier because of the relative movement of satellites, and the Doppler frequency would seriously decay the correlated peak which identifies the alignment of the pseudo codes. In view of the environment with large Doppler frequency shift, the paper proposes the use of a set of Partial Matched Filters combined with Fast Fourier Transform to acquire pseudo code while estimate Doppler frequency shift. This method can reduce two dimensional search of code phase-Doppler frequency to one dimensional. In this paper, the effects of partial correlatiors’ length and FFT points on the performance of PN code acquisition based on PMF-FFT are discussed. The relationship between coherent combining loss, PMF size and Doppler frequency shift is derived, which provides theoretical basis for selecting partial correlators’length. The method for selecting segmental length of a correlator is presented. Simulation results show that the method could estimate the Doppler frequency shift while acquire the PN code." @default.
- W2371749287 created "2016-06-24" @default.
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- W2371749287 date "2009-01-01" @default.
- W2371749287 modified "2023-09-23" @default.
- W2371749287 title "Analysis on PMF-FFT Based Acquisition of PN Code" @default.
- W2371749287 hasPublicationYear "2009" @default.
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