基于传播损耗补偿的近场MIMO成像算法

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• 英文论文题名：A Near-field MIMO Imaging Algorithm Based on Compensation of the Electromagnetic Propagation Loss
• 论文作者：胡大海 ; 姜艳芳 ; 杜刘革 ; 常庆功 ; 王亚海
• 英文论文作者：HU Da-hai ; JIANG Yan-fang ; DU Liu-ge ; CHANG Qing-gong ; WANG Ya-hai ; China Electronics Technology Group Corporation NO.41 Research Institute
• 年：2016
• 作者机构：中国电子科技集团公司第四十一研究所;
• 论文关键词：距离徙动算法 ; 滤波补偿因子 ; 雷达成像 ; 多输入多输出阵列
• 英文论文关键词：Range Migration Algorithm ; Radar Imaging ; Multiple-Input Multiple-Output array
• 会议召开时间：2016-08-17
• 会议录名称：2016年全国军事微波、太赫兹、电磁兼容技术学术会议论文集
• 语种：中文
• 分类号：TN957.52
• 学会代码：WBXB
• 会议名称：2016年全国军事微波、太赫兹、电磁兼容技术学术会议
• 会议地点：中国陕西西安
• 主办单位：中国电子学会微波分会、天线与微波技术重点实验室
• 学会名称：《微波学报》编辑部
• 页数：4
• 文件大小：451k
• 原文格式：D
• 会议级别：全国

摘要

在双站距离徙动算法的基础上,研究了三维MIMO阵列成像算法,提出了近场传播损耗补偿方法。在考虑近场电磁波衰减的基础上,严格根据驻定相位法原理详细推导了成像算法公式,得出双站距离徙动成像算法关键的幅度衰减补偿因子,补偿因子影响图像幅度一致性,近程三维成像条件下不能够忽略。为了验证成像算法性能,设计了简单的二维稀疏平面阵列,进行仿真成像及暗室环境下的实测成像实验,成像聚焦效果良好,表明该算法可用于近距离、高分辨率、三维成像系统。
A 3-D multiple input multiple output imaging algorithm based on the bia-static Range Migration is investigated in this paper and a conpensation method of the electromagnetic propagation loss is present at the same time. On the basis of considering the near field electromagnetic wave attenuation, the imaging algorithm formulae are deduced in detail by applying the Method of Stationary Phase strictly which leads to a key filter factor for 3-D imaging algorithm as a consequence. Imaging result is influenced by this key filter factor at the range direction which can not be ignored under certain conditions. In order to verify the performance of the algorithm, a simple 2-D sparse array is designed for the imaging experiments in a complex electromagnetic environment. The focusing results are excellent which shows that the MIMO imaging algorithm discussed in this paper can be used for short-range, high-resolution and 3-D imaging system.

引文

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