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《Journal of Jilin University(Earth Science Edition)》 2008-01
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Application of Ground Penetrating Radar Polarization in the Concrete Structure Detection

ZHANG Wen-bo,WEI Wen-bo,JING Jian-en,JIA Zheng-yuanKey Laboratory of Geo-Detection,Ministry of Education(China University of Geosciences),Beijing 100083,China  
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.
【Fund】: 国家自然科学基金项目(40674045);; 中国地质调查局项目(1212010511108)
【CateGory Index】: TU746.2
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