基于目标电磁散射模型的雷达回波模拟方法研究

Research on radar echo simulation based on target electromagnetic scattering model

提出了一种基于目标电磁散射模型的雷达回波模拟方法,采用电磁场高频近似方法离线仿真雷达目标的宽频宽角后向雷达散射截面,雷达回波模拟时实时调用目标散射模型数据;针对LFM信号,实现了宽带雷达目标回波信号的逼真模拟。以舰船目标为例,仿真算例给出了目标电磁散射特性仿真及宽带雷达回波模拟结果,采集模拟回波信号并进行雷达成像处理,得到舰船目标的二维雷达图像,仿真结果验证了该方法的可行性与有效性。

A method of radar echo simulation based on target electromagnetic scattering model is proposed.The wide-band and wide angle backscatter RCS of radar target is simulated off-line by using the electromagnetic field high frequency approximation method,target scattering model data is called in real time during radar echo simulation,and the simulation of the wide-band radar target echo signal is realized for the LEM signal.The electromagnetic scattering characteristic and wide-band radar echo simulation result of a ship target are given as a simulation example.2 Dradar image of ship target is acquired by echo signal acquisition and radar imaging processing.The simulation results verify the feasibility and effectiveness of this method.