{"title":"Deconvolution of causal pulse and transient data","authors":"A. Bennia, N. Nahman","doi":"10.1109/IMTC.1990.66011","DOIUrl":null,"url":null,"abstract":"The effects of the causality of a certain class of frequency domain filters that satisfy the Paley-Wiener criterion are discussed. Physical pulses and transients are causal functions of time; that is, their values are zero before t=0, the time at which they begin. Their measured waveform data are also causal. When deconvolution processing is applied to remove instrumentation errors and/or suppress the effects of noise, noncausal deconvolution methods may introduce unacceptable errors. The Nahman-Guillaume automatic deconvolution method is modified to ensure that causality is maintained in the deconvolution result. Examples which show the undesirable effects of noncausal methods and a means of eliminating such effects are given.<<ETX>>","PeriodicalId":404761,"journal":{"name":"7th IEEE Conference on Instrumentation and Measurement Technology","volume":"74 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1990-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"25","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"7th IEEE Conference on Instrumentation and Measurement Technology","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/IMTC.1990.66011","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 25
Abstract
The effects of the causality of a certain class of frequency domain filters that satisfy the Paley-Wiener criterion are discussed. Physical pulses and transients are causal functions of time; that is, their values are zero before t=0, the time at which they begin. Their measured waveform data are also causal. When deconvolution processing is applied to remove instrumentation errors and/or suppress the effects of noise, noncausal deconvolution methods may introduce unacceptable errors. The Nahman-Guillaume automatic deconvolution method is modified to ensure that causality is maintained in the deconvolution result. Examples which show the undesirable effects of noncausal methods and a means of eliminating such effects are given.<>
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