The invention discloses a method for evaluating the
simulation imaging of a multi-mode SAR (
Synthetic Aperture Radar), which mainly solves the problems of poor adaptability to different operating
modes, complex experiment process and long experiment time in the prior art. The method comprises the following steps of: firstly, selecting an operating mode, inputting the parameters of a
radar and the motion parameters of a carrier, loading a
simulation scene and setting coordinates; secondly, setting a
simulation radar echo signal according to a
system environment; thirdly, imaging the
radar echo signal to obtain a slant-range image; fourthly, geometrically correcting the slant-range image by using a three-dimensional geometric
correction method to obtain a ground-range image; and finally, evaluating the quality of the ground-range image, and feeding back and correcting
system parameters according the evaluation results so as to provide a feasible basis for a latter semi-physical simulation experiment. The method is applicable to three operating
modes including a side looking mode, a slant looking mode and a scanning mode; only a plurality of parameters need to be input during operation, so that the experiment process can be simplified, the experiment time is saved, and the method can be used in a ground simulation experiment of SAR
system design.