基于北斗卫星导航的载波跟踪算法研究

载波跟踪环路的设计是北斗卫星导航接收机基带处理设计中的关键，环路的跟踪性能基本决定了整个接收机中基带处理芯片的性能。介绍了了北斗卫星信号的接收过程，分析了基于FLL，PLL混合跟踪算法的跟踪原理及其性能，对其中的鉴频器，鉴相器，滤波器，的各种算法，进行了比较分析。

Carrier tracking loop is the Key in satellite navigation receiver baseband processor design, the performance of the tracking loop deeide the entire receiver baseband processor chip. This article describes the course of the Beidou satellite signal reception, analysis the principle and the performance of based on FLL, PLL of hybrid tracking algorithm ,and make a eompare against a variety of algorithms of the frequency discriminator, phase detector, filters.