| 利用探地雷达的极化特性检测建筑物结构 |
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| 引用本文： | 张文波,魏文博,景建恩,贾正元.利用探地雷达的极化特性检测建筑物结构[J].吉林大学学报(地球科学版),2008,38(1):156-160. |
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| 作者姓名： | 张文波 魏文博 景建恩 贾正元 |
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| 作者单位： | 地下信息探测技术与仪器教育部重点实验室(中国地质大学),北京,100083;地下信息探测技术与仪器教育部重点实验室(中国地质大学),北京,100083;地下信息探测技术与仪器教育部重点实验室(中国地质大学),北京,100083;地下信息探测技术与仪器教育部重点实验室(中国地质大学),北京,100083 |
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| 基金项目： | 国家自然科学基金
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中国地质调查局区域地质调查项目 |
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| 摘 要： | 探地雷达偶极子天线激发的是线性极化波,其主要极化方向与天线的长轴平行。接收天线对与其长轴平行的入射电场分量最敏感。对于高导圆柱体,当半径与波长之比较小时,其散射场TE极化的后向散射宽度要小于TM极化的后向散射宽度。通过桥梁结构检测实例证明,利用这种特性,在建筑物结构检测时,采用发射天线和接收天线平行、且垂直于钢筋走向的天线布置,可以减少浅部钢筋的散射,增强雷达剖面中对深部目标的辨识。
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| 关 键 词： | 探地雷达 极化特性 结构检测 |
| 文章编号： | 1671-5888（2008）01-0156-05 |
| 收稿时间： | 2007-05-11 |
| 修稿时间： | 2007年5月11日 |
Application of Ground Penetrating Radar Polarization in the Concrete Structure Detection |
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| ZHANG Wen-bo,WEI Wen-bo,JING Jian-en,JIA Zheng-yuan.Application of Ground Penetrating Radar Polarization in the Concrete Structure Detection[J].Journal of Jilin Unviersity:Earth Science Edition,2008,38(1):156-160. |
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| Authors: | ZHANG Wen-bo WEI Wen-bo JING Jian-en JIA Zheng-yuan |
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| Institution: | China University of Geosciences |
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| Abstract: | Dipole ground penetrating radar(GPR) antennas radiate linearly polarized wave with the predominant polarization direction parallel to the long axis of the antenna.Receive antennas are very sensitive to the electric field component parallel to the long axis.For conductive cylinder,when the radius-to-wavelength ratio is small,the backscattering width of TE polarization is narrower than that of TM backscattering.Examples of bridge structure detection confirm that the antenna configuration in which the transmitting and receiving antennas are oriented parallel to each other and perpendicular to the long axis of the reinforcing bar can reduce the backscattering and enhance the potential of deeper target identification. |
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| Keywords: | ground penetrating radar polarization structure testing |
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