无线电通信技术2016，Vol.42Issue(3)：33-36,4.DOI:10.3969/j.issn.1003-3114.2016.03.09
一种机载卫星通信终端频率捕获跟踪算法
A Frequency Acquisition and Tracking Algorithm of Airborne Satellite Communication Terminal
段勇存 1王力男 1裴文端1
作者信息
- 1. 中国电子科技集团公司第五十四研究所，河北 石家庄050081
- 折叠
摘要
Abstract
As a special satellite communication equipment, the airborne satellite communication terminal operates in an environment very different from common communication terminals.Under the circumstances of high Doppler shift,it is difficult to achieve frequency acquisition and tracking in the process of communication. To solve the problem that airborne terminal’ s Doppler frequency shift changes quickly in the process of communication,this paper presents a multibeam carrier frequency offset estimation algorithm.The process of frequency capture and synchronous tracking is described in detail. During this process, the algorithm searches frequency correction information of each TDMA frame by using the frequency correction channel of adjacent beam,in another word it can deter⁃mine the initial frequency and timing information in a relatively short period of time.The algorithm is simulated by MATLAB,and the results show that it can effectively implement fast carrier acquisition and accurate tracking.关键词
机载终端/相邻波束/多普勒频移/频率捕获跟踪Key words
airborne terminal/adjacent beam/Doppler shift/frequency acquisition and tracking分类
信息技术与安全科学引用本文复制引用
段勇存,王力男,裴文端..一种机载卫星通信终端频率捕获跟踪算法[J].无线电通信技术,2016,42(3):33-36,4.
