利用超宽带脉冲反演二维导体目标图像  

Image reconstruction of a perfectly conductor cylinder with ultrawide band pulse

作　　者：钟选明[1] 廖成[1] 陈伟[1] 杨周炳[2] 廖勇[2] 孟凡宝[2] 

机构地区：[1]西南交通大学电磁所,四川成都610031 [2]中国工程物理研究院应用电子学研究所,四川绵阳621900

出　　处：《电波科学学报》2005年第5期683-686,共4页Chinese Journal of Radio Science

基　　金：国家自然科学基金资助项目(10476021);西南交通大学基础研究基金

摘　　要：讨论了自由空间中导体柱图像重建的时域实数遗传算法,导体柱的围线用极坐标形式下的形状函数来表示。逆散射问题转换成受限制的优化问题,形状函数的系数就是需要优化的变量,通过尽量减小随时间变化的散射场的测量值与计算值之间的相对误差来不断优化。并通过计算机仿真验证了此方法的优越性。An image reconstruction approach based on the time-domain real-coded genetic algorithm for a perfectly conductor cylinder in free space is presented in this paper. The contour of the cylinder is denoted by a shape function in polar coordinates. The inverse problem is turned into a restrained optimization problem and the coefficients of the shape function are optimized. The relative error between the measured scattered electric field changes with time and the simulated one is the object function to be minimized. The experimental and numerical results validate the feasibility of this method.

关 键 词：实数遗传算法 FDTD 图像重建 

分 类 号：TM131.42[电气工程—电工理论与新技术]