Aiming at the problems of high speed and acceleration during the relative movement of satellite and high dynamic termi-nal,which cause large Doppler frequency shift span and high variation rate,apilot-assisted high dynamic burst signal capture tech-nique is proposed;the study investigates the channel characteristics of the satellite-terminal communication link,and the technology adopts countermeasures based on the FFT algorithm and frequency bias pre-compensation,which constructs the Doppler frequency shift compensated channel models for the transmitter and receiver;and designs a new architecture of multi-frame header synchroniza-tion and pilot-assisted architecture,which effectively reduces the error rate of the frame transmission under the low signal-to-noise ra-tio;the simulation results show that:the algorithm achieves a 1 × 10-5 BER index with an improvement in the reception sensitivity of approximately 3 dB,which meets the demand of high dynamic terminal access to the satellite mobile communication system.
维普
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