Fast Simulation System for Spaceborne SAR Echoes

With the increasing demand for space-to-earth observation, spaceborne synthetic aperture radar ( SAR ) has become an important technology of earth observation. However, the high cost and long cycle of spaceborne SAR research seriously restrict the development efficiency of spaceborne SAR system. Therefore, this paper constructs a spaceborne SAR echo fast simulation system by analyzing the satellite-Earth geometric model and simulating the backscattering coefficient of complex surface, and proposes an improved inverse ωK ( IωK ) original echo data simulation algorithm in this system. Finally, the acceleration effect of the algorithm is verified by experiments, and the imaging effect of the spaceborne large scene echo data obtained by the system proposed in this paper is demonstrated, the effectiveness of the echo simulation system is verified.