| 基于时间反演和单站天线的导体目标微波成像 |
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| 引用本文： | 钟选明,廖成.基于时间反演和单站天线的导体目标微波成像[J].西南交通大学学报,2011,46(3):451-455. |
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| 作者姓名： | 钟选明 廖成 |
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| 作者单位： | 西南交通大学电磁场与微波技术研究所,四川,成都610031 |
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| 基金项目： | 国家自然科学基金委员会.中国工程物理研究院联合基金资助项目，中央高校基本科研业务费专项资金资助项目 |
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| 摘 要： | 为克服强散射体环境、多径效应等因素对目标成像的影响,利用时间反演法的自适应聚焦特性,研究了导体目标微波成像算法.将需要成像的目标轮廓用有限项三角级数逼近,散射问题用时域有限差分法模拟,逆散射问题转换成受限制的优化问题,引入遗传算法优化待求的三角级数的系数,仅用单站天线完成多散射体环境中二维导体目标的图像重建.为验证算法的有效性,对2个算例进行了数值仿真.
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| 关 键 词： | 时间反演 遗传算法 微波成像 逆散射 |
Microwave Imaging of Perfectly Conducting Cylinder Based on Time Reversal and Single Antenna |
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| ZHONG Xuanming,LIAO Cheng.Microwave Imaging of Perfectly Conducting Cylinder Based on Time Reversal and Single Antenna[J].Journal of Southwest Jiaotong University,2011,46(3):451-455. |
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| Authors: | ZHONG Xuanming LIAO Cheng |
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| Institution: | ZHONG Xuanming,LIAO Cheng(Electromagnetics Institute,Southwest Jiaotong University,Chengdu 610031,China) |
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| Abstract: | To reduce the effects of multi-path and highly reflective scatterers in a clutter environment,a microwave imaging algorithm for a perfectly electrical conducting target was proposed based on the adaptive focusing characteristic of time reversal(TR).In this algorithm,the contour of an unknown target is approximated by a trigonometric series.The scattering problem is simulated using the finite-difference time-domain(FDTD) technique,and the inverse problem is translated into a restrained optimization problem a... |
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| Keywords: | TR(time reversal) GA(genetic algorithm) microwave imaging inverse scattering |
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