Abstract:In high dynamic and weak GNSS signal environments, long coherent integration is necessary to enhance the acquisition sensitivity. High dynamic results in large Doppler frequency range, and long integration time results in small Doppler frequency bin. The above two reasons induce high calculation complexity. To improve the flexibility of acquisition process, twostage FFT acquisition method is presented in this paper. The first stage FFT performs upon received signal across short time, which divides the Doppler … Show more
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