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Target multi-dimensional rotations effects on ISAR imaging

The effects of target multi-dimensional rotations on inverse synthetic aperture radar (ISAR) imaging are analyzed from the point of view of Doppler history. In airborne ISAR, the geometry relationship between radar and moving targets is very complicate. And the relationship between Doppler change and target multi-dimensional rotations is not clearly. In this paper, a novel analytical geometry model is presented. Based on this model, we draw a simple conclusion and find an easy way to understand the Doppler frequency variation due to the multi-dimensional rotations of target