城市场景机载SAR回波数据仿真方法  

Simulation method for airborne SAR echo data in urban scenes

作　　者：赵竹新 范纯卓 冯彦卿 王海强 曾健 ZHAO Zhuxin;FAN Chunzhuo;FENG Yanqing;WANG Haiqiang;ZENG Jian(Beijing Institute of Remote Sensing Information,Beijing 100080,China;China Centre for Resources Satellite Data and Application,Beijing 100094,China)

机构地区：[1]北京市遥感信息研究所,北京100080 [2]中国资源卫星应用中心,北京100094

出　　处：《测绘科学》2024年第12期142-148,共7页Science of Surveying and Mapping

摘　　要：该文提出了一种机载合成孔径雷达(SAR)城市场景回波数据仿真方法,由几何建模、电磁建模和回波仿真3个模块共同实现。该方法实现了将射线追踪与SAR成像算法融合,能在不同的城市场景、不同的机载平台和不同的雷达参数指标下完成复杂的仿真任务,且其有效性在点物体仿真实验和真实城市场景仿真实验中均得到了较好的验证。另外,该文还设计了分布式合成孔径雷达仿真实验,并且完成了三维Tomo SAR的重建实验。实验结果不仅从另一个角度阐释了仿真方法的有效性,同时也展示出该仿真方法在支持SAR三维重建算法、雷达平台基线最优化设计等研究方面的潜力。a simulation method for airborne synthetic aperture radar(SAR)urban scene echo data was proposed in this paper,which was implemented by three modules:geometric modeling,electromagnetic modeling,and echo simulation.The fusion of ray tracing and SAR imaging algorithms was achieved,which could complete complex simulation tasks in different urban scenes,different airborne platforms,and different radar parameter indicators,and its effectiveness was well verified in point object simulation experiments and real urban scene experiments.In addition,a distributed synthetic aperture radar simulation experiment was designed and the reconstruction experiment of 3D Tomo SAR was completed.Experimental results not only illustrated the effectiveness of the simulation method from another perspective,but also demonstrated the enormous potential of this method in supporting SAR 3D reconstruction algorithms,radar platform baseline optimization design,and other research areas.

关 键 词：SAR回波数据 仿真方法 城市场景 分布式机载SAR仿真 

分 类 号：TN957.52[电子电信—信号与信息处理]