{"title":"Detection of Unresolved Rayleigh Targets in Monopulse Radar With Two Angular Dimensions","authors":"Fei Cai;Hongqi Fan","doi":"10.1109/TAES.2025.3535848","DOIUrl":null,"url":null,"abstract":"For monopulse radar, unresolved targets occur if more than one target falls into the same resolution bin and beam. The detection of unresolved targets is necessary to prevent failure of target tracking in scenarios, such as formation targets, jamming, or small targets, masked by sidelobes of large objects. In this article, the detection of unresolved Rayleigh targets with two angular dimensions is studied. The joint probability density function (PDF) of the monopulse ratios in two angular dimensions is derived. Based on this PDF, two unresolved targets detectors are proposed using the generalized likelihood ratio test. The two detectors are for the cases with and without knowledge of one target's direction-of-arrival, respectively. The proposed detectors are evaluated via Monte Carlo simulations and compared with their counterparts that consider only one angular dimension. The results show that performance improvement is achieved through joint processing of the two angular dimensions.","PeriodicalId":13157,"journal":{"name":"IEEE Transactions on Aerospace and Electronic Systems","volume":"61 3","pages":"7435-7446"},"PeriodicalIF":5.7000,"publicationDate":"2025-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Transactions on Aerospace and Electronic Systems","FirstCategoryId":"94","ListUrlMain":"https://ieeexplore.ieee.org/document/10857303/","RegionNum":2,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, AEROSPACE","Score":null,"Total":0}
引用次数: 0
Abstract
For monopulse radar, unresolved targets occur if more than one target falls into the same resolution bin and beam. The detection of unresolved targets is necessary to prevent failure of target tracking in scenarios, such as formation targets, jamming, or small targets, masked by sidelobes of large objects. In this article, the detection of unresolved Rayleigh targets with two angular dimensions is studied. The joint probability density function (PDF) of the monopulse ratios in two angular dimensions is derived. Based on this PDF, two unresolved targets detectors are proposed using the generalized likelihood ratio test. The two detectors are for the cases with and without knowledge of one target's direction-of-arrival, respectively. The proposed detectors are evaluated via Monte Carlo simulations and compared with their counterparts that consider only one angular dimension. The results show that performance improvement is achieved through joint processing of the two angular dimensions.
期刊介绍：
IEEE Transactions on Aerospace and Electronic Systems focuses on the organization, design, development, integration, and operation of complex systems for space, air, ocean, or ground environment. These systems include, but are not limited to, navigation, avionics, spacecraft, aerospace power, radar, sonar, telemetry, defense, transportation, automated testing, and command and control.
京公网安备 11010802042870号
京ICP备2023020795号-1
分享
求助内容：
应助结果提醒方式：
扫码关注我们
