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本发明介绍的三阶锁相环,是用以跟踪具有很大频率偏移的信号的相位,特别是用来跟踪多卜勒频率变化率很高的信号的相位。
The third-order phase-locked loop described in the present invention is used to track the phase of a signal having a large frequency offset, especially for tracking the phase of a signal whose rate of change in Doppler frequency is high.