摘要
SAR处理对三维转动的舰船成像会产生模糊效应,如果采用适当的ISAR处理方法对舰船成像,则舰船的三维转动不仅不会造成模糊,还会提高ISAR图像的分辨率和信息量。观测到的ISAR图像信息依赖于观测视角,要得到信息量最大的ISAR图像需要对观测视角进行优化设计。文中详细研究了舰船目标的机载ISAR成像特点,导出了ISAR图像信息量与观测视角的定量关系式,给出了求解最优观测视角的方法。仿真结果验证了该方法的有效性。
A ship target with three-dimensional rotations will make image become blurred if Synthetic Aperture Radar（SAR）technique is used.Appropriate Inverse Synthetic Aperture Radar（ISAR）technique will not only resolve this blurring problem but also improve the resolution and incrase information of ISAR images.The information of an ISAR image depends on viewing angles.To obtain an ISAR image having the largest amount of information,the viewing angles need to be optimized.After study on the features of airborne ISAR imaging of ship targets,we derived the relation between the ISAR image information amount and viewing angles,and found the solution of finding the optimal viewing angles.Simulation results demonstrated the effectiveness of the method.
出处
《现代雷达》
CSCD
北大核心
2010年第1期62-65,共4页
Modern Radar
基金
微波成像技术国家重点实验室基金(MITL2008-01)资助
