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浙江大学学报(工学版)
J4  2010, Vol. 44 Issue (6): 1201-1206    DOI: 10.3785/j.issn.1008973X.2010.06.028
    
Ground penetrating radar’s high resolution processing method based on deconvolution
SU Mao-xin, LI Shu-cai, XUE Yi-guo, QIU Dao-hong
Research Center of Geotechnical and Structural Engineering, Shandong University, Jinan 250061,China
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Abstract  

In order to reduce the impact of attenuation, dispersion and other interference in the ground penetrating radar(GPR) detection, where presents a GPR’s high resolution processing method based on the deconvolution technique was presented. The method is built on the stratum system response model, through computing a stratum spectrum correction factor from the GPR’s raw data, and the raw data’s spectrum will be corrected, which will improve the GPR’s profile recorder and enhance the detection vertical resolution. As the stratum spectrum correction factor decides the application effect of the stratum spectrum correction method, through studying the factor’s calculating and selection method, comparative analysis of the spectrum and the profile situation preand postcorrection was carried out, and the application effect was compared to those of the sharp pulse deconvolution and the band filter method. The comparison results show that the profile’s effective frequency range is bordened after the correction, and the stratum spectrum correction method can serve to improve the whole profile’s signaltonoise ratio(SNR) and enhance the resolution of the deep signals. 

Published: 16 July 2010
CLC:  TU 195  
  P 631.4  
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Cite this article:

SU Mao-Xin, LI Shu-Cai, XUE Yi-Guo, QIU Dao-Hong. Ground penetrating radar’s high resolution processing method based on deconvolution. J4, 2010, 44(6): 1201-1206.

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http://www.zjujournals.com/eng/10.3785/j.issn.1008973X.2010.06.028     OR     http://www.zjujournals.com/eng/Y2010/V44/I6/1201


基于反褶积的探地雷达高分辨率处理方法

为了降低探地雷达探测过程中衰减、频散及其他干扰所造成的影响,提出一种基于反褶积技术的探地雷达高分辨率处理方法.该方法建立在地层系统响应模型基础之上,通过从原始记录中求取地层频谱校正因子,对原始记录的频谱进行校正,达到改善探地雷达剖面记录,提高探测分辨率目的.地层频谱校正因子决定了地振频谱校正方法应用效果的好坏，通过研究因子的求取和选择方法，对比分析校正前后的频谱和剖面情况,同时与尖脉冲反褶积和带通滤波的应用效果做比较,结果表明：地层频谱校正方法相对于传统的尖脉冲反褶积和带通滤波方法更能改善整个剖面的信噪比,提高深部信号的分辨率.


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