Three-dimensional shipborne inverse synthetic aperture radar imaging based on single receiver

Three-dimensional (3D) inverse synthetic aperture radar (ISAR) image can provide additional height information compared to conventional 2D ISAR image. However, since the existing 3D ISAR imaging methods concentrate on the interferometric technique, the height resolution depends on a large number of receivers. In this letter, a novel 3D ISAR imaging method is proposed. Instead of using the interferometry between several receivers, the chirp term caused by the shipborne radar’s rotations is utilized to obtain the height resolution. Therefore, single receiver is enough to reconstructing the 3D image, and hence the hardware complexity for 3D ISAR imaging is reduced. Simulation results validate the effectiveness of the proposed method.