... radio signal unstable 无线电台信号不稳定 ; 无线电接收信号不稳定 radio signal interceptor 无线电信号截听器 Satellite Radio Signal Propagation 卫星信号传播 ...
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卫星信号传播；
辅助长码直捕的一个最重要的先验信息是时间信息，卫星信号传播时延估计是减少时域搜索范围的一个重要方面。
Time is important information for fast and direct acquisition of military code, and compression of signal's propagation delay time uncertainty is an effective means for it.
通过测量信号在卫星和天线之间传播所需的时间，汽车的位置可以被锁定在100米误差之内。
By measuring the time required for a signal to travel between the satellites and the antenna, the car's location can be pinned down within 100 meters.
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