Research on high-resolution ship targets radar imaging at sea

This paper addresses the problem and the method to make high-resolution radar imaging of ship targets at sea. Based on the general ship 3-D swaying geometry, the paper analyses the effect of ship sailing velocity and 3-D rotation movements to SAR imaging mode, and then provides an imaging interval selection method with the R-D (range-Doppler) ISAR imaging algorithm. We stress the fact that the robustness and the facility of this method to deal with abound echo data in real-time engineering process. The ISAR imaging results of actual measured ship echo data proves the validly of this method.