Adaptive SAR data processing with automatic range cell migration correction in Doppler domain

This paper extends the concept of autofocus in SAR processing procedure and proposes an adaptive algorithm for SAR data focusing. The novel algorithm discards the hypothesis in the autofocus algorithms, i.e. the range migration has been removed perfectly, and moves the “adaptive” processing to the front of RCMC. By adjusting the parameters for focusing adaptively, the range migration in the Doppler domain can be removed correctly. With such an adaptive algorithm, a better image quality can be achieved with respect to the classic autofocus algorithms.