国产欧美精品一区二区,中文字幕专区在线亚洲,国产精品美女网站在线观看,艾秋果冻传媒2021精品,在线免费一区二区,久久久久久青草大香综合精品,日韩美aaa特级毛片,欧美成人精品午夜免费影视

Aiming at the problems of high speed and acceleration during the relative movement of satellite and high dynamic terminal, which cause large Doppler frequency shift span and high variation rate, a pilot-assisted high dynamic burst signal capture technique 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 synchronization and pilot-assisted architecture, which effectively reduces the error rate of the frame transmission under the low signal-to-noise ratio; the simulation results show that: the algorithm achieves a 1e-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.