卫星信道突发直扩信号的快速捕获

Fast Acquisition of Burst Direct Sequence Spread Spectrum Signals through Satellite Channel

本文讨论了利用中频积累法实现信噪比为—15dB条件下突发直扩信号的快速捕获。文章分析了积累环的工作原理,以及环路设计中应考虑的因素,并且给出了信号通过卫星信道时的试验数据。

The paper dicusses the fast acquisition of the direct sequence (DS) spread spectrum signals using a intermediate frequency recirculation loop,when the signals passed the satellite channel. Fundamental principles of the recirculation loop and some problems in designing the loop are described. Test results are shown at the time when the signal passes the satellite channel.