Wide-band interference mitigation algorithm for SAR based on time-varying filtering and sparse recovery

Wide-band interference (WBI) can severely degrade synthetic aperture radar image quality. This Letter proposes a new WBI suppression technique using time-varying filtering method and sparse recovery. In this method, a time-varying filter is firstly set up in the short-time Fourier transform domain as a pre-processing step to suppress the major power of WBI, and then, an adaptive dictionary-based s...