海面流场的三种雷达体制成像仿真

监测海面流场是微波遥感重要应用之一,它对民用和军用领域都有非常重要的意义。微波传感器主要包括早期的真实孔径雷达、高分辨率合成孔径雷达和新兴的双站合成孔径雷达。文中提出一种对海面弱流场和波浪进行真实孔径雷达/合成孔径雷达/双站合成孔径雷达成像的仿真方法。该方法根据给定的海面流场数据、海况条件和雷达参数,考虑倾斜、流体动力和速度聚束调制作用,并利用海面微波散射模型和雷达回波信号模型生成雷达仿真图像,得到的雷达图像可为后续的海洋目标检测等算法提供仿真数据源。

Imaging Simulation of Ocean Current for Three Radar Systems

Monitoring ocean surface current is one of the most important applications for microwave remote sensing. It is significant for both civil and martial maritime activities. Microwave sensors mainly include early RAR, high-resolution SAR, and Bistatic SAR which is newly arisen. A simulation procedure for RAR/ SAR/ biSAR with parallel flight squint mode imagery of ocean current and waves is presented in this paper. With the use of ocean surface current file, sea state and radar parameters, and take tilt, hydrodynamic and velocity bunching modulation into account, this procedure can generate simulated radar imagery, based on the ocean surface scattering model and radar echo model. Radar imagery generated by this procedure can provide simulated data source for sequent algorithms research, i. e. , ocean targets detection.