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| A Practical Autofocus Algorithm for SAR |
| Wei Li-deng; Wu Yi-rong; Xiang Mao-sheng |
| National Key Lab. of Microwave Imaging Technology,The Institute of Electronics,Chinese Academy of Sciences,Beijing 100080, China |
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Abstract A practical modified autofocus algorithm for synthetic aperture radar, the iterative shift-and-correlation algorithm, is presented, Comparing with the original shift-and-correlation algorithm, the modified one can obtain more accurate estimations in worse case by incorporating the appropriate iterations, the new weightings and the auto-selecting width of the detecting window. Both the theoretical analyses and the test results indicate that the iterative shift-and-correlation algorithm can obtain more reliable results with a cost of slight increment of the computational complexity.
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Received: 02 April 2004
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2005, Vol. 27 
