Extended PGA for range migration algorithms |
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Authors: | Van Rossum WL Otten MPG Van Bree RJP |
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Institution: | NO Defence, Security & Safety, Hague, Netherlands; |
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Abstract: | The phase gradient autofocus (PGA) algorithm is extended to work for synthetic aperture radar (SAR) spotlight images processed with range migration (w-k) algorithms. Several pre-processing steps are proposed for aligning the range-compressed phase-history data needed for successful autofocusing of the data. The proposed algorithm gave good results for both data with large point targets and data without point targets. |
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