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Quartic-Phase Algorithm for Highly Squinted SAR Data Processing

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2 Author(s)
Kaizhi Wang ; Dept. of Electron. Eng., Shanghai Jiao Tong Univ. ; Xingzhao Liu

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

Published in:

IEEE Geoscience and Remote Sensing Letters  (Volume:4 ,  Issue: 2 )