2012 14th International Conference on Ground Penetrating Radar (GPR)最新文献_第7页

Development of a high speed UWB GPR for rebar detection 高速超宽带探地雷达检测钢筋的研制

2012 14th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2012-06-04 DOI: 10.1109/ICGPR.2012.6254834

Tian Xia, Xianlei Xu, A. Vekatachalam, D. Huston

引用次数: 19

Near-field modeling of radar antennas for wave propagation in layered media: When models represent reality 波在分层介质中传播的雷达天线近场建模:当模型代表现实时

2012 14th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2012-06-04 DOI: 10.1109/ICGPR.2012.6254829

S. Lambot, A. Tran, F. André

{"title":"Near-field modeling of radar antennas for wave propagation in layered media: When models represent reality","authors":"S. Lambot, A. Tran, F. André","doi":"10.1109/ICGPR.2012.6254829","DOIUrl":"https://doi.org/10.1109/ICGPR.2012.6254829","url":null,"abstract":"Characterization of the electrical properties of a medium using ground-penetrating radar (GPR) appeals to inverse modeling, which has remained a major challenge in applied geophysics in particular due to antenna modeling limitations. In this paper, we propose a new near-field radar modeling approach for wave propagation in layered media. Radar antennas are modeled using an equivalent set of infinitesimal electric dipoles and characteristic, frequency-dependent, global reflection and transmission coefficients. These coefficients determine, through a plane wave decomposition, wave propagation between the radar reference plane, point sources, and field points. The interactions between the antenna and the medium are thereby inherently accounted for. The fields are calculated using three-dimensional Green's functions. We validated the model using both time and frequency domain radars. The antennas were calibrated using measurements at different heights above a copper plane. The proposed model provided unprecedented results for describing near-field radar data collected over water, whose frequency-dependent electrical properties were described using the Debye model. Very good agreements were also obtained for measurements collected over water as validating medium for the inversions. The proposed modeling approach is fast and shows great promise for digital soil mapping or non-destructive material characterization.","PeriodicalId":443640,"journal":{"name":"2012 14th International Conference on Ground Penetrating Radar (GPR)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130884402","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

A novel compact UWB ground penetrating radar system 一种新型小型超宽带探地雷达系统

2012 14th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2012-06-04 DOI: 10.1109/ICGPR.2012.6254835

S. Ye, Jing Chen, Lihua Liu, Changchun Zhang, G. Fang

引用次数: 9

Liquid-gel type suspended matters boundary detection of fluid fertilizer inside PE tank using GPR and seismic crosshole method 用探地雷达和地震井间法检测PE罐内液体肥料液凝胶悬浮物边界

2012 14th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2012-06-04 DOI: 10.1109/ICGPR.2012.6254971

Seong-Jun Cho, E. Bang

引用次数: 0

Finite element GPR numerical simulations based on mixed boundary conditions 基于混合边界条件的探地雷达有限元数值模拟

2012 14th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2012-06-04 DOI: 10.1109/ICGPR.2012.6254858

Deshan Feng, Cheng-shen Chen

引用次数: 0

GPR for disaster mitigation and beyond 探地雷达用于减灾及其他领域

2012 14th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2012-06-04 DOI: 10.1109/ICGPR.2012.6254687

M. Sato

引用次数: 3

The 2011 GPR surveys in the Archaeological site of Hierapolis of Phrygia (Turkey) 2011年土耳其弗里吉亚希拉波利斯考古遗址的探地雷达调查

2012 14th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2012-06-04 DOI: 10.1109/ICGPR.2012.6254933

G. Leucci, G. Di Giacomo, I. Ditaranto, I. Miccoli, G. Scardozzi

{"title":"The 2011 GPR surveys in the Archaeological site of Hierapolis of Phrygia (Turkey)","authors":"G. Leucci, G. Di Giacomo, I. Ditaranto, I. Miccoli, G. Scardozzi","doi":"10.1109/ICGPR.2012.6254933","DOIUrl":"https://doi.org/10.1109/ICGPR.2012.6254933","url":null,"abstract":"Hierapolis of Phrygia (Turkey) was one of the most important Hellenistic, Roman and Byzantine cities in Asia Minor. The Italian Archaeological Mission in more than 50 years of activity in Hierapolis has brought to light and restored important vestiges of the ancient city, helping to understand the urban layout in the various epochs of its development. In 2011 Ground-penetrating Radar surveys, finalized to support the archaeological excavations and surveys, were performed in some important sample areas by a team of Institute for Archaeological and Monumental Heritage of the Italian National Research Council. The GPR acquisition was performed along a series of closely spaced lines and the processed data were visualized as two-dimensional vertical sections, depth slices, and three dimensional volumes to allow an integrated interpretation of the archaeological results. The analysis of the geophysical data sets revealed a series of anomalies that could be ascribed to the possible archaeological structures, as well as other anomalies of presumable natural origin. The collected data from all areas studied, were georeferenced by using an high-precision GPS, and were entered into the digital archaeological map of Hierapolis.","PeriodicalId":443640,"journal":{"name":"2012 14th International Conference on Ground Penetrating Radar (GPR)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122715381","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Crosshole radar tomographic inversion without ray tracing 无射线追踪的井间雷达层析反演

2012 14th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2012-06-04 DOI: 10.1109/ICGPR.2012.6254872

Fei Wang, Sixin Liu, Xinxin Qu

引用次数: 1

Qualitative model of spatio-temporal radiation pattern of GPR antenna 探地雷达天线时空辐射方向图的定性模型

2012 14th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2012-06-04 DOI: 10.1109/ICGPR.2012.6254857

F. D. Edemskiy, A. Popov, S. Zapunidi

{"title":"Qualitative model of spatio-temporal radiation pattern of GPR antenna","authors":"F. D. Edemskiy, A. Popov, S. Zapunidi","doi":"10.1109/ICGPR.2012.6254857","DOIUrl":"https://doi.org/10.1109/ICGPR.2012.6254857","url":null,"abstract":"In our recent work, a simple qualitative model of a dipole GPR antenna radiation pattern has been developed. Replacing the real resistively-loaded dipole by an infinite line current source stretched along the ground-air interface reduces derivation to a 2D boundary value problem for a scalar wave equation which admits an exact analytical solution. Using the complex variable technique we express the Green function in terms of elementary functions and obtain the spatio-temporal radiation pattern for an arbitrary current pulse form by Duhamel integral. In spite of this simplification, the constructed solution describes quite well the ultra-wideband (UWB) pulse emitted by a realistic GPR antenna. These analytical results are useful for the interpretation of GPR raw data by giving a full description of the pulse amplitude and waveform dependence on the radiation angle. Moreover, an inverse problem can be solved: to find the unknown antenna current pulse from the signal measured in the air half-space. Two cases are considered: the surface wave and the aerial wave propagating upwards. This information gives the possibility to deconvolve the subsurface probing data thus increasing the GPR resolution.","PeriodicalId":443640,"journal":{"name":"2012 14th International Conference on Ground Penetrating Radar (GPR)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128924022","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Estimation of soil hydraulic parameters by integrated hydrogeophysical inversion of time-lapse GPR data measured at Selhausen, Germany 利用德国Selhausen时移GPR数据的综合水文地球物理反演估算土壤水力参数

2012 14th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2012-06-04 DOI: 10.1109/ICGPR.2012.6254952

K. Jadoon, L. Weihermuller, H. Verrecken, S. Lambot

{"title":"Estimation of soil hydraulic parameters by integrated hydrogeophysical inversion of time-lapse GPR data measured at Selhausen, Germany","authors":"K. Jadoon, L. Weihermuller, H. Verrecken, S. Lambot","doi":"10.1109/ICGPR.2012.6254952","DOIUrl":"https://doi.org/10.1109/ICGPR.2012.6254952","url":null,"abstract":"We present an integrated hydrogeophysical inversion approach that uses time-lapse off-ground ground-penetrating radar (GPR) data to estimate soil hydraulic parameters, and apply it to a dataset collected in the field. Off-ground GPR data are mainly sensitive to the near-surface water content profile and dynamics, and are thus related to soil hydraulic parameters, such as the parameters of the hydraulic conductivity and water retention functions. The hydrological simulator HYDRUS 1-D was used with a two-layer single- and dual-porosity model. To monitor the soil water content dynamics, time-lapse GPR and time domain reflectometry (TDR) measurements were performed, whereby only GPR data was used in the inversion. The dual porosity model provided better results compared to the single porosity model for describing the soil water dynamics, which is supported by field observations of macropores. Furthermore, the GPR-derived water content profiles reconstructed from the integrated hydrogeophysical inversion were in good agreement with TDR observations. These results suggest that the proposed method is promising for non-invasive characterization of the shallow subsurface hydraulic properties and monitoring water dynamics at the field scale.","PeriodicalId":443640,"journal":{"name":"2012 14th International Conference on Ground Penetrating Radar (GPR)","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128995154","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0