有耗媒质中目标瞬态谐振特性实验测量与分析  

The Measurement and Analysis of the Transient Resonant Properties of Objects Buried in Lossy Media

作　　者：方广有[1] 张忠治 江文秉 

机构地区：[1]电子工业部第二十二研究所,新乡河南453003 [2]西安交通大学微通所,西安市710049

出　　处：《电波科学学报》1998年第2期127-132,138,共7页Chinese Journal of Radio Science

摘　　要：目标识别是雷达探测领域研究的难点问题，本文利用无载频脉冲探地雷达系统对有耗媒质中细长导线状和环状金属目标的瞬态散射特性进行了实验测量，并利用极点展开理论对谐振现象的产生给予了分析和讨论．在瞬态脉冲激励下，有耗媒质中的目标能够产生外部振荡现象，目标谐振时雷达接收信号的幅值比非谐振时大得多．谐振信号的产生与目标形状和特性、媒质参数、激励脉冲的宽度和天线极化特性等因素有关．The discrimination of targets is a difficult problem in the domain of radar detection.The measurements of transient resonant properties of thin wires and rings buried in lossy media are respectively made by a kind of Short-Pulse Ground Penetrating Radar (named as LTD-3 SPGPR System made by CRIRP) in this paper. The resonant signals may be produced by objects buried in lossy media under transient field illuminating. The resonant signals received by the SPGPR are much bigger than the normally scattered signals. The resonant signal is very dependent on the properties of the object, the parameters of medium , the width of the illuminating pulse as well as the polarity of the antenna and so on. The mechanism of the resonant phenomenon is also analysed by SEM theory.

关 键 词：无载频 脉冲探地雷达 埋地目标 瞬态谐振 

分 类 号：TN959.7[电子电信—信号与信息处理] TN959.6[电子电信—信息与通信工程]