基于TDDM的BPSK信号同步捕获算法  

Research on Synchronization Acquisition Algorithm in BPSK Signals Based on TDDM

作　　者：周帆[1] 

机构地区：[1]沈阳理工大学信息科学与工程学院,沈阳110159

出　　处：《火力与指挥控制》2013年第2期14-17,共4页Fire Control & Command Control

基　　金：国家自然科学基金(60802031);辽宁省创新团队基金资助项目

摘　　要：TDDM(时分数据调制)是一种新的扩频方式,以其良好的伪码跟踪精度不断推动着卫星导航技术的发展。然而,新的TDDM机理的应用却为有效的伪码信号同步提出了非常大的挑战。为此,以GPS P码为例,对TDDM扩频的BPSK信号特性以及BPSK直扩信号同步捕获算法进行了深入研究,并在此基础上,提出了一种适合基于TDDM的BPSK信号同步捕获算法。通过仿真实验,验证了该算法的合理性、有效性和可行性。The development of satellite navigation technique is promoted constantly because of PN code tracing precision of TDDM, which is a new fashion of spread frequency.However, a big challenge is brought into the effective synchronization of PN code with the application of new TDDM method.Take GPS P-code as a example, a synchronization acquisition algorithm of BPSK based on TDDM is put forward-based on the profound research on the feature of BPSK signal which is spread frequency by TDDM and synchronization acquisition algorithm of BPSK signals of direct spread frequency. Furthermore, the rationality, validity and feasibility of the algorithm is tested by simulation experiments.

关 键 词：TDDM BPSK 同步捕获 GPS 

分 类 号：TN96[电子电信—信号与信息处理]