MITSUBISHI ELECTRIC RESEARCH LABORATORIES http://www.merl.com High Resolution Scan Mode SAR Using Compressive Sensing Liu, D.; Boufounos, P.T. TR2013-124 September 2013 Abstract Conventional scan-mode synthetic aperture radar (SAR) covers a large area at the expense of reduced azimuth resolution, compared to other operation modes. In this paper, we develop a high resolution scan-mode SAR using random steering and compressive sensing (CS) based techniques. Our approach randomizes the beam steering pattern of conventional scan-mode SAR in both azimuth and range directions such that each pulse beam illuminates a diﬀerent, randomly chosen, part of the area of interest. We model the image to be reconstructed as a combination of a sparse and a dense component, and combine sparse recovery with least squares methods to estimate them. Our experimental results demonstrate that the proposed randomly steered scan-mode SAR can improve imaging resolution without compromising the covered area size. Asia-Paciﬁc Conference on Synthetic Aperture Radar This work may not be copied or reproduced in whole or in part for any commercial purpose. Permission to copy in whole or in part without payment of fee is granted for nonproﬁt educational and research purposes provided that all such whole or partial copies include the following: a notice that such copying is by permission of Mitsubishi Electric Research Laboratories, Inc.; an acknowledgment of the authors and individual contributions to the work; and all applicable portions of the copyright notice. Copying, reproduction, or republishing for any other purpose shall require a license with payment of fee to Mitsubishi Electric Research Laboratories, Inc. All rights reserved. Copyright c  Mitsubishi Electric Research Laboratories, Inc., 2013 201 Broadway, Cambridge, Massachusetts 02139