2011 6th International Workshop on Advanced Ground Penetrating Radar (IWAGPR)最新文献_第5页

Two-layer inversion of dispersive GPR data due to freezing induced waveguides — A synthetic study 冻结诱导波导对探地雷达色散数据的两层反演——一个综合研究

2011 6th International Workshop on Advanced Ground Penetrating Radar (IWAGPR) Pub Date : 2011-06-22 DOI: 10.1109/IWAGPR.2011.5963841

Jenneke Bakker, J. van der Kruk, J. Bikowski, H. Vereecken

引用次数: 4

3-D survey with a modular ground-penetrating radar system at the Roman town Mariana (Corsica) 在罗马城镇马里亚纳(科西嘉)用模块化探地雷达系统进行三维测量

2011 6th International Workshop on Advanced Ground Penetrating Radar (IWAGPR) Pub Date : 2011-06-22 DOI: 10.1109/IWAGPR.2011.5963872

L. Verdonck, F. Vermeulen

{"title":"3-D survey with a modular ground-penetrating radar system at the Roman town Mariana (Corsica)","authors":"L. Verdonck, F. Vermeulen","doi":"10.1109/IWAGPR.2011.5963872","DOIUrl":"https://doi.org/10.1109/IWAGPR.2011.5963872","url":null,"abstract":"Recently, the use of ground-penetrating radar (GPR) arrays with a large number of antenna elements in a fixed configuration has become more common. The investment needed for these systems is significant. Although gradually expandable modular systems, consisting of antennas which can be used independently, do not match the fast acquisition of detailed datasets by means of multi-channel arrays, they can help finding a compromise between increased acquisition speed and (limited) resources. In modular systems, the separation between transmitter-receiver pairs is often larger than the sampling distance prescribed by the Nyquist theorem. As a consequence, additional profiles have to be recorded in between, which requires a high positioning precision. As a completely identical response for the different antennas in an array is difficult to achieve, stripes can occur in the horizontal slices, especially when ringing occurs. This complicates the interpretation of features in the direction of the survey lines. In this paper, a threedimensional frequency-wavenumber filter is proposed, consisting in a combination of a circular filter and a fan filter. The application of this filter to GPR data collected at the Roman town Mariana (Corsica, France) showed a reduction of the stripe patterns, allowing a more reliable characterization of subtle archaeological structures.","PeriodicalId":130006,"journal":{"name":"2011 6th International Workshop on Advanced Ground Penetrating Radar (IWAGPR)","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126734871","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

Vivaldi shaped TEM horn fed ridged horn antenna design for UWB GPR systems 用于超宽带探地雷达系统的维瓦尔第型瞬变电磁式喇叭馈电脊式喇叭天线设计

2011 6th International Workshop on Advanced Ground Penetrating Radar (IWAGPR) Pub Date : 2011-06-22 DOI: 10.1109/IWAGPR.2011.5963859

A. S. Turk, A. K. Keskin

引用次数: 11

Scattering by cylindrical targets buried in a ground with rough interface 埋于粗糙界面地层中的圆柱形目标的散射

2011 6th International Workshop on Advanced Ground Penetrating Radar (IWAGPR) Pub Date : 2011-06-22 DOI: 10.1109/IWAGPR.2011.5963868

M. A. Fiaz, L. Pajewski, C. Ponti, G. Schettini, F. Frezza

引用次数: 1

Performance and calibration of the helicoper GPR system BGR-P30 直升机探地雷达系统BGR-P30的性能与标定

2011 6th International Workshop on Advanced Ground Penetrating Radar (IWAGPR) Pub Date : 2011-06-22 DOI: 10.1109/IWAGPR.2011.5963896

N. Blindow, C. Salat, V. Gundelach, U. Buschmann, W. Kahnt

引用次数: 21

GPR prospecting in Renaissance and baroque monuments in Lecce (Southern Italy) 意大利南部莱切文艺复兴和巴洛克时期遗迹的探地雷达勘探

2011 6th International Workshop on Advanced Ground Penetrating Radar (IWAGPR) Pub Date : 2011-06-22 DOI: 10.1109/IWAGPR.2011.5963851

F. Grasso, N. Masini

引用次数: 10

Dielectric mittivity of logic Materials at different er contents - Measurements with an impedance analyzer 逻辑材料在不同er含量下的介电常数。阻抗分析仪的测量

2011 6th International Workshop on Advanced Ground Penetrating Radar (IWAGPR) Pub Date : 2011-06-22 DOI: 10.1109/IWAGPR.2011.5963836

F. Owenier, J. Hornung, M. Hinderer

{"title":"Dielectric mittivity of logic Materials at different er contents - Measurements with an impedance analyzer","authors":"F. Owenier, J. Hornung, M. Hinderer","doi":"10.1109/IWAGPR.2011.5963836","DOIUrl":"https://doi.org/10.1109/IWAGPR.2011.5963836","url":null,"abstract":"Dielectric permittivity is an important parameter for all investigations based on electromagnetic waves (e.g. GPR and TDR measurements). In combination with the electric conductivity, it is crucial for the determination of the propagation velocity, the reflection coefficient and the decay of the electromagnetic wave. The dielectric permittivity depends on several factors like water content, mineralogy, grain size, and bulk density of the material. Our laboratory measurements of dielectric permittivity show quantitative relations between these parameters and that commonly used general algorithms for moisture detection bear significant inaccuracies (up to 200% error for clay substrates). Therefore, it is crucial to determine the permittivity for every specific application. This paper provides new algorithms for some most important substrate types, which can be used to recalibrate TDR-tools for specific applications. However, measurements of the dielectric permittivity are also frequency-dependent. In this study an impedance analyzer was used, which provides a frequency range between 10MHz and 1GHz. This is inside the most common range of applications like the TDR measurement method, which has a frequency range from 20KHz up to 20GHz. Ground penetrating radar measurements operate mostly in a frequency range from 40 to 900MHz.","PeriodicalId":130006,"journal":{"name":"2011 6th International Workshop on Advanced Ground Penetrating Radar (IWAGPR)","volume":"102 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132981665","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

Attenuation of GPR waves in soil samples based on reflection measurements 基于反射测量的探地雷达波在土壤样品中的衰减

2011 6th International Workshop on Advanced Ground Penetrating Radar (IWAGPR) Pub Date : 2011-06-22 DOI: 10.1109/IWAGPR.2011.5963879

T. Wunderlich, W. Rabbel

引用次数: 5

Evaluation of far-field layered media modeling for time-domain commercial GPR antenna 时域商用GPR天线远场分层介质建模评价

2011 6th International Workshop on Advanced Ground Penetrating Radar (IWAGPR) Pub Date : 2011-06-22 DOI: 10.1109/IWAGPR.2011.5963898

M. R. Mahmoudzadeh, K. Jadoon, S. Lambot

{"title":"Evaluation of far-field layered media modeling for time-domain commercial GPR antenna","authors":"M. R. Mahmoudzadeh, K. Jadoon, S. Lambot","doi":"10.1109/IWAGPR.2011.5963898","DOIUrl":"https://doi.org/10.1109/IWAGPR.2011.5963898","url":null,"abstract":"The possibility to estimate accurately the subsurface electromagnetic properties from commercial ground penetrating radar (GPR) signals using inverse modeling is obstructed by the appropriateness of the forward model describing the GPR subsurface system. In 2004 Lambot et al. proposed a promising GPR model for multilayered media characterization based on frequency-domain subsurface Green's functions and antenna effects filtering by linear transfer functions. In this study we analyzed the feasibility of full-waveform frequency-domain modeling for off-ground time-domain commercial GPR. We calculated the antenna transfer functions using measurements with a 1 GHz center frequency transmitting and receiving horn antenna situated at different heights above a copper plane. Also we validated the approach in the laboratory with measurements performed over the water as a homogeneous medium with frequency dependent electrical properties. A single Debye relaxation model was used to describe the frequency dependent water electrical properties with correcting the relaxation period and static dielectric permittivity of water for temperature. Inversion of the radar data in the frequency-domain provided relatively accurate estimations of the antenna heights and water layer thickness. These results demonstrated the ability of full-waveform modeling to be also used for commercial time-domain radars.","PeriodicalId":130006,"journal":{"name":"2011 6th International Workshop on Advanced Ground Penetrating Radar (IWAGPR)","volume":"242 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124960715","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

Full-waveform inversion of cross-hole GPR data measured at the boise gravel aquifer 博伊西砾石含水层井间探地雷达全波形反演

2011 6th International Workshop on Advanced Ground Penetrating Radar (IWAGPR) Pub Date : 2011-06-22 DOI: 10.1109/IWAGPR.2011.5963905

X. Yang, A. Klotzsche, J. van der Kruk, H. Vereecken, G. Meles, H. Maurer

引用次数: 2