Tracking is the part of the baseband signal processing.The carrier phase tracking loop, the carrier frequency tracking loop, and the code tracking loop are the three tracking loops in receiver.

• 追踪是基频讯号处理的一部分，再接收机中有三个追踪迴路，其分别为载波相位追踪迴路、载波频率追踪迴路及码追踪迴路。