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Technique and application of GPR in karst prospecting
岩溶勘察中的探地雷达技术及应用

GE Shuang-cheng,SHAO Chang-yun,
葛双成
,邵长云

地球物理学进展 , 2005,
Abstract: The space distribution and physical characteristic of karst had supplied a basic prerequisite for karst prospecting with Ground Penetrating Radar(GPR). This article gave prospecting examples about application of GPR , found out distribution and filling characteristic of karst , and supplied effective measures and foundation for geotechnical engineering prospecting and evaluation in karst area.
探地雷达在地下管线探测中的应用研究
Study and Application of Ground Penetrating Radar (GPR) Application in Underground Pipeline Detection
 [PDF]

田磊
Geomatics Science and Technology (GST) , 2014, DOI: 10.12677/GST.2014.24010
Abstract: 探地雷达探测是以地下不同介质的介电常数差异为基础的一种无损物探方法。本文详细介绍了探地雷达的探测原理、探测方法和解释方法,并指出其在城市地下管线探测中发挥的作用。
 Ground penetrating radar (GPR) detection is based on underground permittivity in different medium of a non-destructive geophysical prospecting method. This paper introduces the detection principle of ground penetrating radar (GPR), detection method and the interpretation method, and points out its role in the urban underground pipeline detection.
探地雷达(GPR)在海南岛东北部海岸带调查中的应用  [PDF]
殷勇,朱大奎,I.P.Martini
第四纪研究 , 2006,
Abstract: 对海南岛东北部海岸带调查采用了探地雷达(GPR)研究海岸带沙体的结构、展布和沉积序列,取得了很好的效果。文章通过和有限的露头资料对比以及对反射波形态、结构的研究,确定了海滩脊、海岸沙丘的反射特征以及潜水面的位置。雷达图像显示五龙港古海滩脊由亚水平、不连续、高振幅和透镜状反射波组成;木兰头海岸沙丘已受到人类活动的扰动,短的、陡倾斜反射可能代表未受扰动的海岸风成沙的前积层。研究表明探地雷达是一种可靠、快速和经济的地球物理方法,在砂砾质海岸可产生高质量、高分辨率和连续的反射剖面,值得加以推广。
基于探地雷达属性预测路基含水率的模型实验研究
Model test study on moisture content prediction of subgrade based on GPR attributes
 [PDF]

刘杰,
LIU Jie

- , 2018,
Abstract: 从探地雷达属性分析入手,研究探地雷达属性分析和BP神经网络相结合的路基含水率预测的方法。根据铁路路基模型含水率试验数据,优选出最大峰值振幅、总能量、主频带能量、百兆带宽能量百分比、峰值频率、平均瞬时相位、能量半衰时等7种探地雷达属性作为铁路路基含水率预测的基本参数,结合含水率测试资料,建立路基含水率BP神经网络预测模型,预测含水率与实际含水率的相关系数,反映铁路路基含水率与探地雷达属性之间的非线性关系。
Based on the analysis on ground penetrating radar (GPR) attributions, a method for predicting the water content level of railway subgrade was proposed by combining the attribute analysis of GPR and BP artificial neural network. Seven usable GPR attributes, including the maximum peak amplitude, total energy, dominant frequency band energy, energy percentage of hundreds megabytes bandwidth, peak frequency, average instantaneous phase and energy halftime, were selected as the basic analysis parameters of prediction models for the moisture content of railway subgrade, based on model test of moisture content of railway subgrade. According to the test data, a BP artificial neural network prediction model of the moisture content of railway subgrade was established. The trained network model was used to predict the moisture content of the railway subgrade model. The correlation coefficient between the predicted and actual moisture content values was predicted, which can well relate the moisture content of railway subgrade with GPR attributes
Gradient Method to Extract ROI of GPR Image
梯度幅度法提取探地雷达图像ROI

JIN Miao,ZHAO Yonghui,WU Jiansheng,XIE Xiongyao,
金 淼
,赵永辉,吴健生,谢雄耀

中国图象图形学报 , 2009,
Abstract: 探地雷达图像中双曲型回波特征是识别地下管线的重要依据。根据探地雷达图像具有子波频率信息的特殊性,提出了一种基于梯度幅度的ROI(感兴趣区域)自动提取新方法。通过优化梯度幅度图的微分取值方式,使梯度幅度图中的双曲型特征更为突出;以直方图方式分析灰度信息分布,并自动求取阈值,以该阈值对梯度幅度图进行二值化处理;在此基础上,采用连通区域算法对特征区域进行扩充分割,并根据区域面积剔除杂波区域,从而提取出探地雷达图像中双曲型回波的ROI区域。该方法计算速度快、准确度高,易于在实际探测中实现。
基于探地雷达的地下管线管径探测与判识方法
Research on Interpreting the Information of Underground Pipeline’s Diameter Detected by GPR
 [PDF]

张鹏,董韬,马彬,王旭东
- , 2015,
Abstract: 摘要 目前,基于探地雷达(GPR)的地下管线信息解译工作仅限于判别管线的位置与埋深的经验定性判断,但对地下管线管径的非接触现场测量与信息判识还缺乏简捷、有效的办法。针对这一情况,本文基于GPR探测地下管线的电磁波反射机理提出了一种非开挖、无扰动的现场探测判识地下管径的新方法,并借助GprMax二维时域有限差分法,综合分析了不同埋深、管道材质、管道填充介质、探测频率天线以及探测间距等因素下地下管线管径探测判识新方法的可靠性。最后结合宜兴化工园区地下管线探测工程,检验本文所提新方法取得了良好的探测效果。
FDTD Analysis of a Novel GPR Antenna
一种新型探地雷达天线的FDTD分析

Liu Li-ye,Su Yi,Liu Ke-cheng,Mao Jun-jie,
刘立业
,粟 毅,刘克成,毛钧杰

电子与信息学报 , 2006,
Abstract: The Ground-Penetrating Radar (GPR) systems usually use broadband electromagnetic pulse, so the antennas must be wideband and can couple electromagnetic energy into the ground. A novel GPR antenna that the dipole with discrete exponential resistive loading is above the image plane is present in this paper. Radiation characteristics of the antenna are researched through the Finite Difference Time Domain (FDTD) method. The results show that the antenna in the paper terminates the reflections at the end of antennas through resistive loading, and it can be applied in GPR systems. Several different modes of employed antennas to influence the coupled signal and the scatter signal are also studied.
山东济阳刘台子西周墓的史前遗玉  [PDF]
林继来
东南文化 , 2002,
Abstract: ????山东济阳刘台子西周六号墓出土一件玉鹰虎饰,与同墓的玉雕风格迥异,却与龙山-石家河文化玉雕风格一致。从玉雕工艺及文化交流方面考证此件玉鹰虎饰为史前遗玉。
Research on GPR Multi-object Recognition
探地雷达多目标识别方法的研究

Hu Jin-feng,Zhou Zheng-ou,Kong Ling-jiang,
胡进峰
,周正欧,孔令讲

电子与信息学报 , 2006,
Abstract: With limited samples, SVM has stronger ability of generalization in comparison with machine learning algorithm. In this paper, the SVM is combined with the Ground Penetrating Radar(GPR) multi-object recognition, and a GPR multi-object recognition method is proposed based on the one against one SVM. The proposed method includes the GPR multi-object recognition method based on one against one SVM, the parameter selection method based on the cross-validation and the multichannel recognition method. The contrast analysis between the proposed method and the conventional neural network method is given. The proposed method can be combined with object-feature extraction methods. It is shown that the method is effective in the experimental analysis. The conclusion can direct the research on GPR object recognition.
Finite difference time domain method of GPR forward simulation
探地雷达GPR正演模拟的时域有限差分实现

FENG De-shan,DAI Qian-wei,HE Ji-shan,HE Gang,
冯德山
,戴前伟,何继善,何刚

地球物理学进展 , 2006,
Abstract: This article takes two Maxwell's vorticity equations as basic departure point.Makes use of the principles of K.S.Yee's space grid model theory and the basic principle finite difference time domain method,deduces a GPR forward system of equation of two dimensional spaces.This article also detailedly analyzes the realization method of the half space step and the half time step in difference format,and the correlation of electric field component and magnetic field component of radar wave C program realization on computer.Then author discuss the numerical frequency dispersion relation and the producing reason.At the same time,It is deduced the ideal frequency dispersion relationship match to GPR actual dissemination regulation by considering the finite difference time domain method and the characteristics of Yee's grid.The author makes the GPR forward program by himself,and computes an electricity of radar model under the super absorbed boundary condition and without any boundary condition respectively.By comparison,when doing the the GPR forward simulation calculation,the super absorb the boundary condition can resolve the problem that how to use the finite region to attain the infinite space spreading nicely.At last,the author utilizes self-made program to process forward simulation to two typical geoelectricity model,and it obtaines the satisfied result,which can guide the staff member processing geology explain betterly to the actually radar section.
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