Abstract
In this paper, the impact on carrier capture of high dynamic and low SNR signal in satellite communication caused by the rate of change of the carrier frequency offset is analyzed. Firstly, the existing large carrier frequency offset estimate technology is described. Secondly, the rate of change of the carrier frequency offset impact on the carrier frequency offset is analyzed. Finally, the Doppler shift characteristics of Low SNR high dynamic signal and performance impact on the capture carrier are simulated by MATLAB. The results showed that the rate of change of Doppler shift will seriously affect the number of non-coherent accumulation times of the carrier frequency offset estimate.
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