METHOD AND DEVICE FOR SYNTHETHIC APERTURE RADAR IMAGING BASED ON NON-LINEAR FREQUENCY MODULATION SIGNAL

摘要

A method and device for SAR imaging based on a NLFM signal are provided, and the method includes: performing range pulse compression on echo data according to a transmitted NLFM signal; compensating, according to a determined slant range error, the data subjected to the range pulse compression for a motion error at a reference distance to obtain compensated data; performing modified Stolt mapping on the compensated data; and compensating the data subjected to the modified Stolt mapping for a residual motion error and performing azimuth focusing on the data subjected to the compensation of the residual motion error so as to complete imaging of an NLFM signal.