Echo simulation method of ship target for Geosynchronous SAR

The trajectory for the geosynchronous synthetic aperture radar (GEO SAR) is complicated and the ship target moving combines not only translational motion but also 3-D rotate with the different state of the sea, the echo simulation of ship target in the unified coordinate system be-come a vital problem. A new method for the echo simulation in the ship coordinate system is presented. This meth-od can simulate the real geometry of satellite and earth; ship moving, as well as the rotate (yaw, pitch, roll) in dif-ferent state of the sea. The effectiveness is verified through theoretical and simulation of ISAR imaging. It is a foundation in following the imaging of the ship target for GEO SAR.