A Novel Method of SAR Real Scenario Raw Data Frequency-domain Simulation
一种新颖的SAR真实场景原始数据频域模拟方法

Because of the limitation of the PC’s velocity and capability, it is difficult to simulate SAR real scenarios in time-domain. In this paper, a novel method of SAR real scenario raw data simulation, frequency-domain simulation, is introduced. This method employs space-frequency relationship, other than the traditional time-frequency relationship. After 2D FFT, the scenarios data are interpolated and shifted. Then these data are multiplied by the transfer function of frequency-domain, and followed by IFFT. The simulated raw data can be obtained. The validity of this method is fully manifested by the simulation experiments of point target and the real scenarios. The result show that the method in this paper, compared with the time-domain methods, greatly improve the simulation speed.