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.
GPS定位的精度受到诸多因素的影响，其主要误差来源包括与GPS卫星有关的误差、与信号传播有关的误差、与接受设备有关的误差。
Precision of GPS location is effected by many elements. Major error origins are error related with GPS satellite, error related with signal propagation and error related with accepting equipments.
美国宇航局队伍通过环火星轨道运行的“奥德赛”卫星，用无线电信息向地球传播信号来监控下降和着陆过程的每一阶段。
The Nasa team monitored each stage of the descent and landing process through radio messages relayed to Earth via the Odyssey satellite in orbit around Mars.
卫星信号在大气层中的传播路径是一条曲线，其轨迹很难精确描述。
The propagating path of satellite signals through the atmosphere is a curve which is difficult to precisely plot.
然而，大多数人仍然收益于卫星电视，因为当地的电视公司把从卫星接收器接收到的信号传播给附近的居民。
However, most people still benefit from satellite TV, as local TV companies broadcast the signals they get from satellite receivers to the popilation living nearby.
然而，大多数人仍然收益于卫星电视，因为当地的电视公司把从卫星接收器接收到的信号传播给附近的居民。
However, most people still benefit from satellite TV, as local TV companies broadcast the signals they get from satellite receivers to the popilation living nearby.
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