雷达科学与技术2018，Vol.16Issue(1)：79-86,8.DOI:10.3969/j.issn.1672-2337.2018.01.013
采样定时偏差对无源雷达性能影响研究
Impact of Sampling Timing Offset on Passive Radar Performance
摘要
Abstract
Passive radar uses non-cooperative illumination source to detect targets.Signal reconstruction in the reference channel and clutter rejection in the surveillance channel are key steps in passive radar signal processing.In this paper,we mainly discuss OFDM signals.Then we analyze the impact of the sampling timing offset on the performance of the reference signal reconstruction,time domain clutter suppression and target correlation matching.Theoretical analysis and simulation show that sampling timing offset can reduce the correlation between the reconstructed reference signal and the surveillance signal,the performance of time domain clutter suppression and the matching target signal to noise ratio.Based on the characteristics of WiFi signal frame structure,this paper proposes an algorithm which can estimate and compensate the sampling timing offset.The experimental results verify the effectiveness of the proposed algorithm.关键词
外辐射源雷达/采样定时偏差/信号重构/杂波抑制Key words
passive radar/sampling timing offset/signal reconstruction/clutter suppression分类
信息技术与安全科学引用本文复制引用
饶云华,徐凯文,王胜涛,万显荣,龚子平..采样定时偏差对无源雷达性能影响研究[J].雷达科学与技术,2018,16(1):79-86,8.基金项目
国家自然科学基金(No.61271400) （No.61271400）
湖北省技术创新专项重大项目(No.2016AAA017) （No.2016AAA017）
苏州市重点产业技术创新专项(重点产业技术创新)项目(No.SYG201620) （重点产业技术创新）
