ISAR Imaging for Multiple Targets Based on Randomized Hough Transform

Multiple targets imaging using inverse synthetic aperture technique is a key problem on radar imaging field. This paper proposes a new approach to perform the motion compensation for multiple targets using randomized Hough transform (RHT). The targets' amplitude distribution, i.e., corrugation image is transformed into frequency domain, then The RHT processing is operated on the frequency image to estimate each target's Doppler frequencies respectively, and the multi-target ISAR images will be obtained after range alignment and phase compensation processing for each object respectively.