二分逼近结构的GPS码环鉴相器的设计与实现

Design and Implementation of the Discriminator with Half Approximation Structure in Code Tracking Loop for GPS

在GPS信号的跟踪过程中,码环鉴相器的选择与实现对系统来说有重要意义.文中在分析研究几种不同鉴相器算法的基础上,对最广泛使用的非相干超前减滞后算法的实现进行研究.在一般的算法基础上提出一种二分逼近的鉴相器结构,在相同的精度下,面积和性能都有所改善.

The election and implementation of the code discriminator is very important during the tracking process. This article study the implementation of the most common algorithm- noncoherent early minus late discriminator, based on the research of different algorithms for code discriminator. We propose a new algorithm -- one half approximation structure for the code discriminator, under the same precisoin, requires less area and has superior performance.