Doppler Keystone Transform: An Approach Suitable for Parallel Implementation of SAR Moving Target Imaging

In this letter, a synthetic aperture radar (SAR) data reformatting approach named Doppler keystone transform (DKT) is proposed to correct the range migration of a moving target. By using the DKT, the SAR imaging program, i.e., the 2-D matched filtering, can be transformed into separate 1-D operation...

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Bibliographic Details
Published inIEEE geoscience and remote sensing letters Vol. 5; no. 4; pp. 573 - 577
Main Authors Li, Gang, Xia, Xiang-Gen, Peng, Ying-Ning
Format Journal Article
LanguageEnglish
Published Piscataway IEEE 01.10.2008
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Azimuth
Concurrent computing
Doppler
Doppler effect
Filtering
Imaging
Matched filters
Migration
Moving target imaging
Moving targets
parallel implementation
Parallel processing
Parameter estimation
Partitioning algorithms
Radar imaging
Radar polarimetry
Synthetic aperture radar
synthetic aperture radar (SAR)
Transforms
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Summary:In this letter, a synthetic aperture radar (SAR) data reformatting approach named Doppler keystone transform (DKT) is proposed to correct the range migration of a moving target. By using the DKT, the SAR imaging program, i.e., the 2-D matched filtering, can be transformed into separate 1-D operations along range or azimuth direction, and therefore, the DKT is suitable for the parallel implementation of SAR imaging of the moving target. Our simulations show that by combining the DKT and the Doppler phase compensation methods, the moving target can be well imaged in high signal-clutter-ratio case.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:1545-598X
1558-0571
DOI:10.1109/LGRS.2008.2000621