A New Two-Dimension-Separated Approach to High Squint SAR Processing
大斜视SAR成像的一种新的二维可分离处理方法

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.