由于弹载SAR平台运行速度快、机动性大、运动和姿态存在随机偏差、时实性成像要求高等特点,提出了基于SPECAN技术的子孔径RD成像算法。在距离向,采用匹配滤波技术实现距离向高分辨。在方位向,采用子孔径处理的SPECAN算法。通过仿真结果可以验证,基于SPECAN技术的子孔径RD成像算法有效的减少了数据处理量,降低对弹体存储空间的要求,很好地满足了实时成像要求,提高了导弹的打击精度 Due to the high speed, high maneuverability, random deviation of motion and attitude, and the requirement of real-time imaging of the missile-borne SAR platform, a sub-aperture RD imaging algorithm based on SPECAN is proposed. In the distance, the use of matched filtering technology to achieve distance to high resolution. In azimuth, SPECAN algorithm using subaperture processing. Through the simulation results, it can be verified that the SPECAN-based subaperture RD imaging algorithm can effectively reduce the data processing capacity and reduce the requirements of the projectile storage space, and meet the real-time imaging requirements well and improve the missile strike accuracy