2012 14th International Conference on Ground Penetrating Radar (GPR)最新文献_第4页

Comparison of different methods for reconstruction of microwave holograms recorded by the subsurface radar 地下雷达记录的微波全息图不同重建方法的比较

2012 14th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2012-06-04 DOI: 10.1109/ICGPR.2012.6254884

V. Razevig, S. Ivashov, I. Vasiliev, A. Zhuravlev

引用次数: 13

Integrative GPR loss in a discrete random medium model: The effect of rough-surface and subsurface Mie scatterers 离散随机介质模型下的综合探地雷达损失:粗糙表面和地下米氏散射体的影响

2012 14th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2012-06-04 DOI: 10.1109/ICGPR.2012.6255006

Lanbo Liu, S. Arcone

{"title":"Integrative GPR loss in a discrete random medium model: The effect of rough-surface and subsurface Mie scatterers","authors":"Lanbo Liu, S. Arcone","doi":"10.1109/ICGPR.2012.6255006","DOIUrl":"https://doi.org/10.1109/ICGPR.2012.6255006","url":null,"abstract":"In rough geologic media such as alluvial gravels, glacial till, talus or colluvium, the grain sizes may span the range of GPR in situ wavelengths. Here we experimentally and numerically model the combined scattering loss from a rough surface and subsurface dielectric scatterers, the dimensions of which lie within the Mie regime. We compare the GPR signal amplitude and waveform reflected from the bottom of a large tank filled with small boulders, with the numerically computed response from a discrete random medium (DRM) model in which the scatterers are simulated with ellipsoids. In the numerical model the permittivity of the ellipsoids is constant, and their size and orientation are randomized, but with a uniform distribution. The starting in situ dominant pulse wavelength at 900 MHz was about 17 cm, as was the average rock dimension. The major axis of all DRM scatterers ranged from 15-25 cm. Experimentally, the 900-MHz pulse underwent most dispersion within the first in situ wavelength of depth, and then, at 500-700 MHz dominant frequency, the pulses underwent a near inverse range dependency loss rate, as if the media were a pure dielectric. Using a Monte Carlo style approach, we statistically assessed the scattering loss from many realizations and simulations. The model agrees with the experimental data qualitatively by showing the wave propagation features such as the amplitude decay and high frequency content loss with the increase of the reflection depth.","PeriodicalId":443640,"journal":{"name":"2012 14th International Conference on Ground Penetrating Radar (GPR)","volume":"68 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":"125475928","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

Ground-penetrating radar prospection over a gallery network resulting from neolithic flint mine (Borownia, Poland) 在新石器时代燧石矿形成的画廊网络上的探地雷达勘探(波兰波罗尼亚)

2012 14th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2012-06-04 DOI: 10.1109/ICGPR.2012.6254936

N. Boubaki, A. Saintenoy, S. Kowalczyk, R. Mieszkowski, F. Welc, J. Budziszewski, P. Tucholka

引用次数: 7

Application of ground penetrating radar to inspect the metro tunnel 探地雷达在地铁隧道检测中的应用

2012 14th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2012-06-04 DOI: 10.1109/ICGPR.2012.6254963

Yu Hai-zhong, Ouyang Yu-feng, Chen Hong

引用次数: 9

Ground-penetrating radar for correlation analysis of temporal soil moisture stability and land-slope 基于探地雷达的土壤水分稳定性与坡面相关性分析

2012 14th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2012-06-04 DOI: 10.1109/ICGPR.2012.6255004

M. R. Mahmoudzadeh, M. Vanclooster, J. Minet, S. Lambot

{"title":"Ground-penetrating radar for correlation analysis of temporal soil moisture stability and land-slope","authors":"M. R. Mahmoudzadeh, M. Vanclooster, J. Minet, S. Lambot","doi":"10.1109/ICGPR.2012.6255004","DOIUrl":"https://doi.org/10.1109/ICGPR.2012.6255004","url":null,"abstract":"Knowledge of temporal surface soil moisture variability is an useful key in agriculture, surface hydrology and meteorology. In that respect, ground-penetrating radar (GPR) is a non-invasive and promising tool for high-resolution and large scale characterization. In the case of quantitative analysis, off-ground GPR signal modeling and full-waveform inversion has shown a great potential during the last decade. In this research, we applied GPR for time-laps measurements in an agricultural field along a 320 m single transect with a significant land-slope for about 3 months. A 200-2000 MHz TEM-horn antenna situated 1.1 m above the ground, connected to a vector network analyzer (VNA) was used as an off-ground frequency-domain GPR. The accurate positioning was done using a differential GPS. All systems were mounted on a 4-wheels vehicle for realtime and automated mapping. The calibration of the antenna and using the GPR signal inversion permitted to the ground surface relative dielectric permittivity. Topp's model was used for transformation of the relative dielectric permittivity to soil moisture. The temporal stability of the field-average soil moisture was computed by indicators based on the relative difference of the soil moisture to the field-average. The results showed an excellent correlation amount of -0.9905 for temporal stability of soil moisture and slope variability.","PeriodicalId":443640,"journal":{"name":"2012 14th International Conference on Ground Penetrating Radar (GPR)","volume":"29 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":"115264144","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: 1

Improvement of target imaging quality by multi-polarization MIMO GPR 多极化MIMO探地雷达提高目标成像质量

2012 14th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2012-06-04 DOI: 10.1109/ICGPR.2012.6254845

Z. Zeng, Jing Li, Ling Huang, Fengshan Liu

{"title":"Improvement of target imaging quality by multi-polarization MIMO GPR","authors":"Z. Zeng, Jing Li, Ling Huang, Fengshan Liu","doi":"10.1109/ICGPR.2012.6254845","DOIUrl":"https://doi.org/10.1109/ICGPR.2012.6254845","url":null,"abstract":"As for the conventional ground penetrating radar (GPR) system, the detection result is seriously affected by the antenna directionality, the target scattering sections (RCS) and multi-polarization characteristics of electromagnetic wave. The MIMO (Multiple-Input and Multiple-Output) array antenna GPR technology can overcome the influence of RCS, electromagnetic polarization and improve the quality of target imaging effectively. In this paper, we put forward the MIMO GPR technology based on the “plane wave like (PWL)”. It uses the conventional radar system with multiple antennas and takes the “plane wave like” as transmit resource. It has higher stability and signal-to-noise ratio (SNR). The multi-polarization detection mode can obtain more precise waveform of incident wave. Combining with multi-polarization phase information of target signal, we can obtain more precise location parameters of target and improve the detection accuracy. In addition, because the antenna interval is far less than wavelength of source signal, the multi-polarization and multi-input signal can compress the width of target response polarized wave and increase the target-range resolution. The result of simulation and experiments demonstrate that the MIMO GPR with multi-polarization detection mode has higher target imaging accuracy than that of the conventional GPR system.","PeriodicalId":443640,"journal":{"name":"2012 14th International Conference on Ground Penetrating Radar (GPR)","volume":"12 6","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131505486","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: 1

Assessment of groundwater contamination by landfill leachate with ground penetrating radar 用探地雷达评价垃圾渗滤液对地下水的污染

2012 14th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2012-06-04 DOI: 10.1109/ICGPR.2012.6254957

N. S. Wijewardana, L. Galagedara, M. Mowjood

引用次数: 7

3D GPR imaging for paleoseismology in Central Appennines (Italy) 三维GPR成像在亚平宁山脉中部(意大利)的古地震研究

2012 14th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2012-06-04 DOI: 10.1109/ICGPR.2012.6254997

M. Ercoli, C. Pauselli, C. Federico, A. Frigeri, E. Forte

{"title":"3D GPR imaging for paleoseismology in Central Appennines (Italy)","authors":"M. Ercoli, C. Pauselli, C. Federico, A. Frigeri, E. Forte","doi":"10.1109/ICGPR.2012.6254997","DOIUrl":"https://doi.org/10.1109/ICGPR.2012.6254997","url":null,"abstract":"The knowledge of spatial position and geologic characteristics of active faults is fundamental to locate these elements on geologic maps and better define the potential seismological hazard of an area. A Quaternary fault in the “Piano di Castelluccio” basin, in Central Italy, has been already studied through paleoseismological analysis, provided stratigraphic data on sedimentary units and highlighted evidences of “recent” faulting related to past strong earthquakes. This fault has been defined “silent”, because events were not included in the current seismic catalogues, retaining uncertainties in the definition of the seismic hazard of that area. 2D/3D GPR surveys were done to image the fault zone and to provide new complementary data on the shallow sediments. The 3D data provides continuity of information over the investigation site, characterizing the structure in a total non-invasive way, whilst long 2D profiles were used to extend the study on a wider area. Final images show a characteristic GPR signature of a tectonic structure and faulted units: data reveal its position and continuity in space and highlight clear geometric features, providing useful qualitative and quantitative complementary data.","PeriodicalId":443640,"journal":{"name":"2012 14th International Conference on Ground Penetrating Radar (GPR)","volume":"29 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":"133409249","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: 8

Ground penetrating radar investigations at Ahichhatra: An attempt to identify buried subsurface structures 在阿希哈特拉的探地雷达调查:试图识别被埋的地下结构

2012 14th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2012-06-04 DOI: 10.1109/ICGPR.2012.6254939

S. Sravanthi, J. Malik, Bhuvan Vikrama

引用次数: 6

GPR data analysis in time-frequency domain 时频域探地雷达数据分析

2012 14th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2012-06-04 DOI: 10.1109/ICGPR.2012.6254891

W. Lai, C. Poon

引用次数: 15