Modification of the DBS Algorithm for Stripmap SAR Image Forming Using Warped DFT

Abstract

In this research a modification of the Doppler Beam Sharpening algorithm for stripmap Synthetic Aperture Radar Image forming is proposed. The modification is done using Warped Discrete Fourier Transform adopted on the Synthetic Aperture Radar Image formed using Adaptive Weighted Norm Extrapolation procedure. The proposed modification is analyzed in two scenarios with modelled signal from the Synthetic Aperture Radar. The obtained results show that proposed modification of the Doppler Beam Sharpening algorithm can resolve two close targets that cannot be resolved using Adaptive Weighted Norm Extrapolation procedure.