Imaging of maritime rotation targets in spaceborne SAR image

This paper deals with the imaging distortions induced by the rotation of maritime targets in spaceborne SAR image. Firstly, a simulation model is performed to analyze the variety and effect of maritime targets with different rotation states. Then, we develop a imaging method with the combination of the inverted Fourier transform and ISAR process, and base on the complex image. Finally, experiments are conducted using the TerraSAR-X data acquired in 2014. The parameters of the sea wake are obtained and the phase curves are estimated and compensated to yield partial high-accuracy images.