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针对面目标，给出了合成孔径雷达（ＳＡＲ）系统中获取原始数据的算法及其模拟结果。对模拟的面目标采用矩形网格模型，根据雷达目标的反向散射机理获取雷达原始数据。采用标准的Ｒ－Ｄ算法，通过计算机模拟，得到了面目标的成像结果。
Aiming at the surface target, the algorithm of getting raw data in synthetic aperture radar (SAR) system and its simulation results are given. Rectangular grid model is adopted for the simulated surface target, and the radar original data is obtained according to the backscattering mechanism of radar target. Using standard R-D algorithm, through the computer simulation, the surface of the target imaging results.