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扩频码同步技术一直是 DS/ SS系统中的关键技术。本文以极低信噪比条件下短波 DS/ BPSK系统为例 ,对大频差、极低信噪比条件下 DS/ SS系统扩频码的同步捕获技术进行研究 ,提出了用检测载波信号实现扩频码同步的方法 ,并用 DSP实现。
Spread-spectrum code synchronization technology has been the key technology in DS / SS system. In this paper, the short-wave DS / BPSK system with very low signal-to-noise ratio is taken as an example to study the synchronization acquisition technique of DS / SS system spreading code with large frequency difference and very low signal to noise ratio. Spread-spectrum code synchronization method, and use DSP to achieve.