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运动目标的适合成孔径雷达(ISAR)成象可以归结为绕固定轴(不动点)旋转的目标成象问题。但实际中在观测期间这样的不动点是相对雷达移动的,且移动的规律是未知的,因此,在成象处理前必须进行运动补偿,以得到等效的参考不动点。以往是在目标上寻求一孤立散射点作为参考点,但这对于连片目标不太适合。本文将考虑把散射重心作为参考点,并以此进行运动补偿。这个方案对于连片目标很有效。模拟结果也证明了该方案可行。
Fitted aperture radar (ISAR) imaging of moving targets can be attributed to the problem of target imaging rotating around a fixed axis (fixed point). In practice, however, such fixed points move relative to the radar during the observation period and the laws of motion are unknown. Therefore, motion compensation must be performed before imaging to obtain the equivalent reference fixed point. In the past, an isolated scattering point was sought as a reference point on the target, but this was not suitable for contiguous targets. This article will consider the scattering center of gravity as a reference point, and as a result of motion compensation. This program is very effective for contiguous targets. Simulation results also prove that the scheme is feasible.