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In this paper, the inversion methods applied to obtain the source characteristics are introduced, especially the Kalman filter method, together with related achievements and applications. In the end, the possible direction of studies on source inversion methodology in a near future is discussed., authors=null, authorsList=null, authorCompany=null, correspAuthors=null, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=MzlqdZ8Y1OvGl8M3iV1jRQ==, pdfFileSize=2447498, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1242118309886362377, articleId=1242118304362467340, tenantId=1146029695717560320, journalId=1146031591421210625, language=CN, title=核事故源项反演技术及其研究现状, columnId=1146540929516700224, journalTitle=科技导报, columnName=研究论文, runingTitle=null, highlight=null, articleAbstract=在核事故情况下对源项特性的了解，在很大程度上影响着辐射后果的评价以及应急措施的采取。介绍了目前国内外反演核事故源项所使用的各种方法及其理论背景,其中着重介绍了国际当前流行的Kalman滤波方法及对这些方法的有关研究成果和应用；论述了反演技术今后可能的发展方向。, authors=徐志新,奚树人,曲静原, authorsList=徐志新;奚树人;曲静原, authorCompany=清华大学核能与新能源技术研究院 北京, correspAuthors=null, authorNote=null, correspAuthorsNote=徐志新, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=8cXyNg48E60Cu5IlaA9LuA==, pdfFileSize=2447498, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null)}, authors=null, keywords=[Keyword(id=1242118309475320579, tenantId=1146029695717560320, journalId=1146031591421210625, articleId=1242118304362467340, language=CN, orderNo=1, keyword=源项), Keyword(id=1242118309584372484, tenantId=1146029695717560320, journalId=1146031591421210625, 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