Compensation of body shake errors in terahertz beam scanning single frequency holography for standoff personnel screening

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摘要 Intheterahertz(THz)band,theinherentshakeofthehumanbodymaystronglyimpairtheimagequalityofabeamscanningsinglefrequencyholographysystemforpersonnelscreening.Torealizeaccurateshakecompensationinimagingprocessing,itisquitenecessarytodevelopahigh-precisionmeasuresystem.However,inmanycases,differentpartsofahumanbodymayshaketodifferentextents,resultingingreatlyincreasingthedifficultyinconductingareasonablemeasurementofbodyshakeerrorsforimagereconstruction.Inthispaper,abodyshakeerrorcompensationalgorithmbasedontherawdataisproposed.Toanalyzetheeffectofthebodyshakeontherawdata,amodelofechoedsignalisrebuiltwithconsideringboththebeamscanningmodeandthebodyshake.Accordingtotherebuiltsignalmodel,wederivethebodyshakeerrorestimatedmethodtocompensateforthephaseerror.Simulationonthereconstructionofpointtargetswithshakeerrorsandproof-of-principleexperimentsonthehumanbodyinthe0.2-THzbandarebothperformedtoconfirmtheeffectivenessofthebodyshakecompensationalgorithmproposed.
机构地区 不详
出处 《中国物理B:英文版》 2016年8期
出版日期 2016年08月18日(中国期刊网平台首次上网日期,不代表论文的发表时间)
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