文章基本信息

标题：TOMOGRAPHIC SAR IMAGING OF A FORESTED AREA BY TIME-DOMAIN BACK-PROJECTION
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作者：O. Frey ; F. Morsdorf ; E. Meier 等
期刊名称：ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
印刷版ISSN：2194-9042
电子版ISSN：2194-9050
出版年度：2007
卷号：XXXVI-7/C50
出版社：Copernicus Publications
摘要：Recently, various attempts have been undertaken to retrieve information about the three-dimensional structure of vegetation from multi- baseline synthetic aperture radar data. Although tomographic processing of such data has been demonstrated, yet, there are still several problems that limit the focusing quality. In particular, the frequency-domain based focusing methods are susceptible to irregular and sparse sampling, two problems, which are unavoidable in case of multi-pass, multi-baseline radar data acquired by an airborne system. We propose a time-domain back-projection algorithm, which maintains the original geometric relationship between the original sensor positions and the imaged target and is therefore able to cope with irregular and sparse sampling without introducing any geometric approximations. Preliminary results obtained with a newly acquired P-band tomographic data set consisting of eleven .ight tracks are shown and discussed
关键词：SAR; multi-baseline SAR; tomography; time-domain; back-projection; forest; vegetation