Abstract: The anti-barrage-jamming ability of Inverse Synthetic Aperture Radar(ISAR) is analyzed and simulated,which is based on imaging mechanisms and motion compensation of ISAR in this paper.Moreover,the anti-barrage-jamming ability of ISAR is compared with that of conventional linear frequency-modulated radar and SAR.The result shows that the anti-barrage-jamming ability of ISAR is a little bad compared with conventional linear frequency-modulated radar and SAR,because motion compensation must be done in ISAR imaging.