两种DLL鉴相器算法及其在高动态环境下的应用  

Two DLL Phase Detector Algorithms and Application in High Dynamic Environment

作　　者：马龙 王仕成[1] 刘志国[1] 赵欣 

机构地区：[1]第二炮兵工程大学,西安710025

出　　处：《火力与指挥控制》2012年第10期139-142,共4页Fire Control & Command Control

基　　金：国家"863"基金资助项目

摘　　要：针对高动态应用环境,研究了两种基于延迟锁定环结构的码环鉴相器算法。首先采用理论分析的方法对两种鉴相器的性能进行了对比,然后利用模拟中频数据和真实中频数据,分别对两种算法在低动态和高动态环境下的鉴相性能进行了实验对比研究。结果表明,两种鉴相器都能对码相位进行准确鉴相和牵引。同时,在对两种方法进行对比分析的基础上,给出了两种鉴相器算法各自适用的条件,对高动态GPS跟踪环路的设计实现有一定的理论指导意义。Two phase detector algorithms based on DLL structure are studied for high dynamics environment. The characteristics of the two algorithms are compared respectively by using theoretical method and experimental method with low and high dynamics IF data. The validation results indicate that both of two algorithms detect and tract the code offset effectively. At the same time, it points out their own application environment, which is very useful for the design and implementation of high dynamics GPS signal tracking loop

关 键 词：高动态 信号跟踪 鉴相器 相位牵引 

分 类 号：TN967.1[电子电信—信号与信息处理]