高分辨成像雷达半实物仿真技术研究

Study on High-Resolution Imaging Radar Loop Simulation

研究高分辨成像雷达(SAR)成像精度问题,为有效提高雷达成像精度,提出采用实时SAR半实物仿真方法来验证雷达成像性能。上述方法用实时SAR半实物仿真系统来实现。实时SAR半实物仿真系统由实时SAR回波模拟器和实时仿真机等设备构成。SAR回波模拟技术和实时SAR仿真系统构建技术是其中的关键技术。在实现仿真系统的基础上开展半实物仿真,成像结果正确。仿真结果证明仿真系统建模合理,关键技术正确可行。

High -resolution imaging radar （SAR） is a widely used radar, how to effectively verify the perform- ance of the radar imaging is a technical difficulty. The paper put forward a real - time semi - physical simulation method. This method uses a real - time SAR semi - physical simulation system. The real - time SAR semi - physical simulation system consists of a real - time SAR echo simulator and real - time simulation computers and other equip- ment. The SAR echo simulation technology and the real - time SAR simulation system construction technology are the key technologies. Semi -physical simulation test was carried out on the basis of the simulation system. The experi- mental results show that imaging radar with the change of the carrier trajectory can dynamically generate real - time images, and imaging results are correct. The test results show that the simulation system modeling is reasonable, and the key technology is feasible.