{"title":"A Compensation Algorithm Based on a RSPWVD-Hough Transform for Doppler Expansion in Passive Radar","authors":"Guan Xin, Zhong Li-hua, Huang Donghui, D. Chibiao","doi":"10.3724/sp.j.1300.2013.13073","DOIUrl":null,"url":null,"abstract":"For passive radar, a long integration time is used to achieve high processing gain in order to detect a weak target. As a result, range migration and Doppler expansion may occur for high-speed targets. A keystone transform can be used to rectify range migration introduced by radial velocity. Tangential velocity, however, may lead to Doppler expansion, which entails a loss of integration gain. In this paper, a signal model is presented to analyze the reason for Doppler expansion. A Doppler expansion compensation method is then introduced based on a RSPWVD-Hough transform for a multiple-target scenario. Simulation results show that the proposed method can compensate, with good performance, for the energy loss caused by Doppler expansion in a multiple-target scene. Additionally, results show that the proposed method is also effective for weak targets, and may therefore improve","PeriodicalId":37701,"journal":{"name":"雷达学报","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2013-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"雷达学报","FirstCategoryId":"1093","ListUrlMain":"https://doi.org/10.3724/sp.j.1300.2013.13073","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"Physics and Astronomy","Score":null,"Total":0}
引用次数: 1
Abstract
For passive radar, a long integration time is used to achieve high processing gain in order to detect a weak target. As a result, range migration and Doppler expansion may occur for high-speed targets. A keystone transform can be used to rectify range migration introduced by radial velocity. Tangential velocity, however, may lead to Doppler expansion, which entails a loss of integration gain. In this paper, a signal model is presented to analyze the reason for Doppler expansion. A Doppler expansion compensation method is then introduced based on a RSPWVD-Hough transform for a multiple-target scenario. Simulation results show that the proposed method can compensate, with good performance, for the energy loss caused by Doppler expansion in a multiple-target scene. Additionally, results show that the proposed method is also effective for weak targets, and may therefore improve