高灵敏度接收机跟踪环路设计方案  

Design of high-sensitivity receiver tracking loop

作　　者：王千喜[1] 李社军[1] 王丹阳[1] 杨晓昆[1] 胡强[1] 代栋敏[1] 范振新[1] 欧春湘[1] 

机构地区：[1]中国航天科工信息技术研究院总体部,北京100070

出　　处：《现代电子技术》2013年第11期89-91,94,共4页Modern Electronics Technique

摘　　要：基于GPS/BD兼容高灵敏度导航产品开发和产业化项目,对经典载波跟踪环进行修改,设计实现了高灵敏度跟踪环路。将传统的单点积分数据,转化成一列数据,对该数据进行FFT变换后,可提高载波频率的估计精度,从而提高系统的跟踪灵敏度。并对高灵敏度跟踪环路进行仿真分析,证明高灵敏跟踪环路对弱信号的跟踪能力。Based on development and industrialization projects of GPS / BD compatible high-sensitivity navigation product, the classic carrier tracking loop is modified in this paper to achieve high-sensitivity tracking loop. The key idea is to transform the traditional single-point integration data into a string data. After FFT transformation of the data, the estimation accuracy of the carrier frequency can be improved, thereby increasing the system tracking sensitivity. The high-sensitivity tracking loop is al- so analyzed and simulated in this paper to prove its tracking capacity for tracking weak signals.

关 键 词：高灵敏度 载波跟踪 载波环 码环 

分 类 号：TN929.5[电子电信—通信与信息系统]