Quartic-Phase Algorithm for Highly Squinted SAR Data Processing |
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| Authors: | Wang K Liu X |
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| Institution: | Dept. of Electron. Eng., Shanghai Jiao Tong Univ.; |
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| Abstract: | In this letter, an algorithm based on a quartic-phase model is discussed for processing highly squinted synthetic aperture radar (SAR) data from a large range swath. In the algorithm, a precise quartic-phase model is adopted to describe a range-dependent property of the SAR signal; a constant factor and a secondary scaling process are introduced to make the algorithm easy to be utilized compared with traditional nonlinear chirp scaling algorithms. The novel algorithm can process SAR data under a squint angle above 50deg and achieve a focus depth over 60 km |
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