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A New Two-Dimension-Separated Approach to High Squint SAR Processing |
Huang Yuan-bao; Bao Zheng |
National Key Lab. of Radar Signal Processing Xidian Univ., Xi’an 710071 China |
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Abstract The high squint SAR signal features large range walk and small range curvature, which enable the raw data be compressed in range and azimuth separately. But in case of large azimuth scene size , complex algorithms must be used to cope with the constraint of the focus depth. In this paper a new two-dimension-separated method is presented to compensate the azimuth-dependent chirp rate using a non-linear chirp scaling operation. Finally simulation results are presented to verify the method.
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Received: 25 August 2003
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