For inverse synthetic aperture radar (ISAR ) imaging of uniformly planar rotating objects ,the characteristic of range walk and Doppler walk of a scattering center is analyzed .Thus ,a method is proposed for rotation estimation and compensa-tion .This method exploits Keystone transform to compensate for the first order range walk ,and exploits matched processing to com-pensate for the first order Doppler walk .With the above compensation ,the rotational center and velocity of a non-cooperative object may be searched .Furthermore ,a complete processing scheme is formed for very high resolution ISAR imaging of non-cooperative targets ,and the necessity for applying delicate imaging algorithms is investigated .Finally ,experiments with some measured airplane data demonstrate the effectiveness of the proposed method .%通过对逆合成孔径雷达(ISAR )匀速平面旋转体散射中心的距离和多普勒走动分析,提出一种ISAR目标转动速度及旋转中心估计算法,并实现目标聚焦成像。该方法通过Keystone变换补偿一阶距离走动,采用匹配处理补偿一阶多普勒走动,从而实现对非合作目标的转动补偿和聚焦成像。进而,通过图像质量评价获得目标转速和等效旋转中心联合估计。结合对目标的转动估计,提出了较完整的高分辨ISAR聚焦成像及图像尺度标定的处理流程,并分析了其应用条件。最后,通过实测飞机目标数据验证了该方法的有效性。
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