基于BOC调制信号的频域主瓣叠加捕获算法  

Main Lobe Overlapped Acquisition Algorithm of Frequency Domain Based on BOC Modulation Signal

作　　者：冯永新[1] 徐美荣[1] 刘宪涛[1] 刘芳[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：《数据采集与处理》2012年第1期27-31,共5页Journal of Data Acquisition and Processing

基　　金：国家自然科学基金(60802031)资助项目;辽宁省高校创新团队计划(LT2011005)资助项目;教育部新世纪优秀人才支持计划资助项目

摘　　要：提出了一种基于BOC调制信号的频域主瓣叠加捕获算法。该算法利用BOC调制信号功率谱主瓣与BPSK信号功率谱的相似性,在对接收的BOC调制信号进行上、下边带主瓣滤取,将两主瓣信号分别搬移到中心频率,实现两路信号叠加的基础上,通过与本地信号的相关处理,执行同步捕获。仿真分析表明,本文提出的频域主瓣叠加捕获算法不仅能够实现正确的信号同步捕获,而且捕获精度和性能优于现有的边带和BPSK-like捕获算法。A main lobe overlapped acquisition algorithm of frequency domain based on binary offset carrier （BOC） modulation signal is proposed. Since the main lobe of power spectrum of BOC modulation signal is similar to the BPSK manner, the upper and the lower sideband main lobe signals in BOC modulation signal received are filtered separately, moved to the center fre- quency and overlapped in the algorithm, so that the correlation processing is implemented with the local signal for the synchronization acquisition. The results of simulation and analysis show that the algorithm can implement the correct signal acquisition, and the acquisition accuracy and performance are superior to the side-band and the BPSK-like acquisition algorithms.

关 键 词：频域捕获 BOC调制 主瓣叠加 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]