基于频域搜索的梳状谱信号检测方法  

Frequency searching method for comb-spectrum signals detection

作　　者：陆扬[1] 薛飞[1] 徐功慧 李家波[1] 

机构地区：[1]中国人民解放军91439部队

出　　处：《舰船科学技术》2015年第1期107-111,共5页Ship Science and Technology

摘　　要：由于梳状谱信号多普勒容限较小,利用常规的匹配/相关检测方法进行检测时,需要较大数量的拷贝信号与计算量。针对这一问题,本文提出一种基于频域搜索的梳状谱信号检测算法。通过利用梳状谱信号频域多峰结构的特点,根据信号的先验信息计算出不同径向速度下回波信号的频点分布,对接收的信号在频域进行搜索累计的方法同时实现信号的检测与速度估计。仿真分析证明了本文算法的有效性。The Doppler tolerance of comb spectrum signal is small,when using the conventional matching / correlation method to detect signal,large number of copy signal and calculation amount is needed,focused on this problem,this paper proposed a frequency searching method for comb-spectrum signals detection. By using the comb-spectrum signal＇ s multi-peaks structure in frequency domain,calculated the frequency distribution of different radial velocity according to the prior information,search and cumulate according the frequency distribution in frequency domain,get the echo detection and velocity estimation result,simulation analysis proves the validity of this algorithm.

关 键 词：梳状谱信号 频域搜索 检测 速度估计 

分 类 号：U665.2[交通运输工程—船舶及航道工程]