火力与指挥控制2017，Vol.42Issue(10)：25-29,5.DOI:10.3969/j.issn.1002-0640.2017.10.006
基于高阶累积量的二次雷达应答信号特征分析
Analysis of Feature of Secondary Surveillance Radar Replies Based on High Order Cumulants
摘要
Abstract
To overcome decoding errors problem of secondary surveillance radar(SSR)due to the phenomenon of garble,effective signal separation should be done before decoding. High order cumulants have been widely used in blind source separation algorithms,which mainly use the non-Gaussian feature of signals. Firstly,a signal model for the SSR replies is established. Then,high order cumulants are analyzed according to the zero constant modulus(ZCM)property,and the cumulants of order three-five are proved to be almost equal to zero,which shows that the SSR replies have the character of Gaussian. Finally,the separation performance is compared among independent component analysis(ICA)algorithm,projection algorithm(PA)and so on.Numerical simulations show that the algorithms based on high order cumulants are not suitable for SSR replies.关键词
二次雷达/高阶累积量/信号分选Key words
secondary surveillance radar/high order cumulants/signal separation分类
信息技术与安全科学引用本文复制引用
刘垒,张玉,李丞..基于高阶累积量的二次雷达应答信号特征分析[J].火力与指挥控制,2017,42(10):25-29,5.基金项目
国家自然科学基金(61201379) （61201379）
安徽省自然科学基金资助项目(120805QF103) （120805QF103）
