关键词: 多视角, ISAR, 超分辨

Abstract: A feasible algorithm for inverse synthetic aperture radar(ISAR) imaging of spatial diversity angles is proposed. For the interiors and exteriors of echo data sub-apertures of different visual angle, different alignment reference methods are used for envelope alignment, and then a multiple-spot integration method is used for autofocusing. For fusing received signals from various visual angles, an algorithm of using parameterization and non-parameterization combination for interpolation of the sparse aperture is given, and then the cross range FFT is used to obtain target ISAR imaging, which indicates that the algorithm can be applied in sparse aperture imaging of synthetic aperture radar(SAR). Finally the experimental data processing result is given, which demonstrates the effectiveness of the proposed algorithm.

Key words: spatial diversity angles, ISAR, superresolution