深空卫星通信中低信噪比下GMSK信号的捕获  

Capture Algorithm of the GMSK Signal under Low SNR in Deep Space Satellite Communication

作　　者：李悦[1] 蔡凡 

机构地区：[1]海军装备研究院,北京100161 [2]广州海格通信集团股份有限公司,广东广州510663

出　　处：《南京晓庄学院学报》2012年第3期91-95,共5页Journal of Nanjing Xiaozhuang University

基　　金：VLBI台站中频数值化传输的方法研究(11103066)

摘　　要：文章对低信噪比下GMSK信号的捕获算法进行了研究,主要涉及帧结构设计、信号到达检测和频偏精估计等内容.详细介绍了频偏存在时信号到达检测方法、频率精估计的有关特点,并给出频率估计的仿真结果.This paper is to study the signal capturing algorithm under low SNR environment,mainly concerned with the design of the frame structure,the detector of the signal on reaching and frequency offset fine estimation.The methods of the reaching signal detection and frequency offset fine estimation are described in detail,and the simulation results of frequency estimation is also given.

关 键 词：GMSK 帧同步 频率精估计 

分 类 号：TN965.5[电子电信—信号与信息处理]