为提高转台目标成像时的横向分辨率,需增大转角,而增大转角会引起雷达像模糊。文中在频率空间的直角坐标系中用板块法仿真出大转角转台目标的雷达回波数据,然后用二维快速傅里叶变换对回波数据进行处理,从而获得转台目标的雷达像。经过对仿真数据进行验证,用该方法获得的二维雷达像,其质量高于用极坐标回波数据所成的像 In order to improve the lateral resolution of the turntable target imaging, it is necessary to increase the rotation angle, while increasing the rotation angle will cause the radar image to be blurred. In this paper, the radar echos data of a large turret target is simulated by the plate method in the Cartesian coordinate system of frequency space, and then the echo data is processed by two-dimensional Fast Fourier Transform to get the radar image of the turntable target. After verifying the simulation data, the 2D radar image obtained by the method is of higher quality than the image obtained by using polar coordinate echo data