S. Linz, Christoph Will, F. Lurz, S. Lindner, S. Mann, R. Schober, R. Weigel, A. Koelpin
{"title":"Detector nonlinearity in Six-port radar","authors":"S. Linz, Christoph Will, F. Lurz, S. Lindner, S. Mann, R. Schober, R. Weigel, A. Koelpin","doi":"10.1109/WISNET.2017.7878745","DOIUrl":null,"url":null,"abstract":"This paper presents an in-situ detector characterization and calibration method for differential I/Q Six-port radar systems. A separate calibration of the nonlinear detectors and the remaining linear RF front-end enables an independent analysis of errors caused by detector nonlinearity and by the measurement scenario. A linearity analysis of various detectors in Six-port radar systems shows the necessity of a detector calibration for accurate displacement measurements. The calibration is evaluated with three different Six-port based radar systems at 24 GHz in diverse measurement scenarios. An error reduction of up to 50% has been achieved.","PeriodicalId":266973,"journal":{"name":"2017 IEEE Topical Conference on Wireless Sensors and Sensor Networks (WiSNet)","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"5","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2017 IEEE Topical Conference on Wireless Sensors and Sensor Networks (WiSNet)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/WISNET.2017.7878745","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 5
Abstract
This paper presents an in-situ detector characterization and calibration method for differential I/Q Six-port radar systems. A separate calibration of the nonlinear detectors and the remaining linear RF front-end enables an independent analysis of errors caused by detector nonlinearity and by the measurement scenario. A linearity analysis of various detectors in Six-port radar systems shows the necessity of a detector calibration for accurate displacement measurements. The calibration is evaluated with three different Six-port based radar systems at 24 GHz in diverse measurement scenarios. An error reduction of up to 50% has been achieved.