在GPS接收机中，为了将本地信号和接收到的信号同步，要完成复杂的信号处理过程。
In GPS receiver many digital signal processing steps must be considered in order to align the incoming signal and local signal.
文章对收发系统的射频电路及本地天线单元的中频信号处理方法作了较为详细的介绍。
The radio frequency (RF) circuits of the transceiver and the intermediate frequency (IF) signal processing methods of the LAU are all given a more detailed description in this paper.
本地天线单元中的中频信号处理时，设计了一种可精确反映相位差的鉴相器。
In the if signal processing of the LAU, this paper invents a kind of phase detector that can reflect the phase difference accurately.
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