Please use this identifier to cite or link to this item: https://doi.org/10.1109/TGRS.2003.811078
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dc.titleA novel technique for the processing of short-dwell spotlight SAR data
dc.contributor.authorWong, F.H.
dc.contributor.authorYeo, T.S.
dc.date.accessioned2014-04-23T02:58:37Z
dc.date.available2014-04-23T02:58:37Z
dc.date.issued2003-05
dc.identifier.citationWong, F.H., Yeo, T.S. (2003-05). A novel technique for the processing of short-dwell spotlight SAR data. IEEE Transactions on Geoscience and Remote Sensing 41 (5 PART 1) : 953-963. ScholarBank@NUS Repository. https://doi.org/10.1109/TGRS.2003.811078
dc.identifier.issn01962892
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/50521
dc.description.abstractThe range migration algorithm (RMA) is an accurate algorithm to process spotlight synthetic aperture radar (SAR) data. However, in applying the RMA to process the SAR data, especially for short-dwell data, the data length has to be extended in azimuth by zero-padding it to the length of the azimuth filter. On the other hand, the spectral analysis (SPECAN, which is a deramp followed by a fast Fourier transform) algorithm is efficient, since the data extension is unnecessary, but an assumption is made that all targets have the same FM rate and the same range cell migration. A novel algorithm is introduced here to combine the accuracy of the RMA and the efficiency of SPECAN. It involves bulk azimuth uncompressing the RMA processed data with a single linear FM filter, and then refocusing the data using SPECAN, all done without the azimuth extension in the RMA. Localized artifacts generated can be removed easily. Point target simulations, including one with a high squint angle of 60°, were successfully performed to verify the algorithm. © 2003 IEEE.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1109/TGRS.2003.811078
dc.sourceScopus
dc.subjectAliasing
dc.subjectCompression filter
dc.subjectLinear FM rate
dc.subjectRange cell migration
dc.subjectRange migration algorithm (RMA)
dc.subjectSpectral analysis (SPECAN)
dc.subjectSynthetic aperture radar (SAR) processing
dc.typeArticle
dc.contributor.departmentELECTRICAL & COMPUTER ENGINEERING
dc.contributor.departmentELECTRICAL ENGINEERING
dc.description.doi10.1109/TGRS.2003.811078
dc.description.sourcetitleIEEE Transactions on Geoscience and Remote Sensing
dc.description.volume41
dc.description.issue5 PART 1
dc.description.page953-963
dc.description.codenIGRSD
dc.identifier.isiut000183670000003
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