2011 6th International Workshop on Advanced Ground Penetrating Radar (IWAGPR)最新文献_第2页

Observation of volumetric water content and reflector depth with multichannel ground-penetrating radar in an artificial sand volume 人工沙体中多通道探地雷达观测体积含水量及反射面深度

2011 6th International Workshop on Advanced Ground Penetrating Radar (IWAGPR) Pub Date : 2011-06-22 DOI: 10.1109/IWAGPR.2011.5963910

J. Buchner, Alexander Kuhne, Benny Antz, K. Roth, U. Wollschlager

引用次数: 5

GPR clutter modeling taking into account soil heterogeneity 考虑土壤非均质性的探地雷达杂波建模

2011 6th International Workshop on Advanced Ground Penetrating Radar (IWAGPR) Pub Date : 2011-06-22 DOI: 10.1109/IWAGPR.2011.5963876

Kazunori Takahashi, J. Igel, H. Preetz

引用次数: 0

Ground penetrating SAR buried landmine focusing in ground-plane 地平面聚焦的探地雷雷

2011 6th International Workshop on Advanced Ground Penetrating Radar (IWAGPR) Pub Date : 2011-06-22 DOI: 10.1109/IWAGPR.2011.5963907

T. Jin, Qian Song, Yun-fei Shi, Zhimin Zhou, B. Lu

引用次数: 0

Recursive integration CFS-PML for GPR FDTD modelling 探地雷达时域有限差分建模的递归积分CFS-PML

2011 6th International Workshop on Advanced Ground Penetrating Radar (IWAGPR) Pub Date : 2011-06-22 DOI: 10.1109/IWAGPR.2011.5963865

A. Giannopoulos

引用次数: 1

Integrated GPR and unilateral NMR approach to estimate water content in a porous material 综合探地雷达和单边核磁共振方法估算多孔材料中的含水量

2011 6th International Workshop on Advanced Ground Penetrating Radar (IWAGPR) Pub Date : 2011-06-22 DOI: 10.1109/IWAGPR.2011.5963912

C. Ferrara, P. M. Barone, S. Lauro, D. Capitani, V. Di Tullio, E. Mattei, N. Proietti, E. Pettinelli

{"title":"Integrated GPR and unilateral NMR approach to estimate water content in a porous material","authors":"C. Ferrara, P. M. Barone, S. Lauro, D. Capitani, V. Di Tullio, E. Mattei, N. Proietti, E. Pettinelli","doi":"10.1109/IWAGPR.2011.5963912","DOIUrl":"https://doi.org/10.1109/IWAGPR.2011.5963912","url":null,"abstract":"In the present paper we combined two different non-destructive techniques to detect the water content spatial variation in a porous material. The main goal of this work was to verify the ability of radar “early time” signals, using the proton density values measured with the unilateral NMR (Nuclear Magnetic Resonance) technique, in order to detect the spatial distribution of water in the subsurface of a concrete slab. This site was chosen because it was the best compromise between an uniform, porous and slow drainage material and the antenna-coupling, affected only by the surface permittivity variations due to the change in water content. The GPR (Ground Penetrating Radar) survey has been conducted using a bistatic radar unit (Sensors & Software, Inc) operating at 1000 MHz; on the other hand, NMR data were collected using portable unilateral NMR operating at 16.3 MHz. The results obtained in this paper confirm that the “early time” radar signal and the NMR response can be applied to estimate some physical properties of both natural and man-made materials. In fact, the data show a matching pattern of the water distribution in the shallow part of the slab measured by GPR and NMR, and a very high correlation coefficient between the radar signal amplitude and the NMR signal integral. Finally, the results highlight the importance of this new combined approach to evaluate different physical parameters at the same time.","PeriodicalId":130006,"journal":{"name":"2011 6th International Workshop on Advanced Ground Penetrating Radar (IWAGPR)","volume":"64 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":"124189862","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

A new single frequency multistatic microwave system to characterize the near-subsurface: First results in a controlled environment 一种新的单频多静态微波系统，用于表征近地下:首先在受控环境中产生

2011 6th International Workshop on Advanced Ground Penetrating Radar (IWAGPR) Pub Date : 2011-06-22 DOI: 10.1109/IWAGPR.2011.5963842

C. Christelle, I. Issam, S. Soufiane, H. Hervé

引用次数: 0

Assessing uncertainties in determining GPR ground wave velocities: An approach based on spectral velocity analysis 评估确定探地雷达地波速度的不确定性:一种基于频谱速度分析的方法

2011 6th International Workshop on Advanced Ground Penetrating Radar (IWAGPR) Pub Date : 2011-06-22 DOI: 10.1109/IWAGPR.2011.5963838

G. Hamann, J. Tronicke

{"title":"Assessing uncertainties in determining GPR ground wave velocities: An approach based on spectral velocity analysis","authors":"G. Hamann, J. Tronicke","doi":"10.1109/IWAGPR.2011.5963838","DOIUrl":"https://doi.org/10.1109/IWAGPR.2011.5963838","url":null,"abstract":"We propose a spectral velocity analysis approach to determine ground wave velocity from multi-offset or common midpoint (CMP) ground-penetrating radar (GPR) data. Our method is based on the linear moveout equation of ground wave arrivals and uses the unnormalized crosscorrelation to measure the coherency of the waveforms across the data gather. Peaks in the resulting velocity spectra indicate optimum velocities of linear events present in the data. Thus, our method is conceptually similar to CMP velocity analysis of reflected events where velocity spectra are computed using different coherency measures along hyperbolic trajectories. Furthermore, we propose a simple method to estimate uncertainties of the determined velocities. The introduced measure of uncertainty is based on the width of the maxima in the calculated velocity spectrum. Using different synthetic data examples, we test our approach and evaluate the influence of the true subsurface velocity, the surveying geometry, and the signal frequency on the accuracy of ground wave velocity estimates. Furthermore, we demonstrate the impact of these uncertainties on soil water content derived from these velocity values.","PeriodicalId":130006,"journal":{"name":"2011 6th International Workshop on Advanced Ground Penetrating Radar (IWAGPR)","volume":"3 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":"133701182","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

High performance ground penetrating radar with up to 1 KM range on coal-mining area 高性能探地雷达，探测范围达1km

2011 6th International Workshop on Advanced Ground Penetrating Radar (IWAGPR) Pub Date : 2011-06-22 DOI: 10.1109/IWAGPR.2011.5963843

I. Ibragimov, E. Ibragimova

引用次数: 2

On the reliability of current GPR ground wave methods for determining near-surface water contents 现有探地雷达地波法测定近地表水含量的可靠性

2011 6th International Workshop on Advanced Ground Penetrating Radar (IWAGPR) Pub Date : 2011-06-22 DOI: 10.1109/IWAGPR.2011.5963881

P. Klenk, J. Buchner, K. Roth, U. Wollschlager, Yanfang Qin, K. Zhou

引用次数: 7

Ground-penetrating radar characterization of water as a function of frequency, salinity and temperature 以频率、盐度和温度为函数的探地雷达表征水

2011 6th International Workshop on Advanced Ground Penetrating Radar (IWAGPR) Pub Date : 2011-06-22 DOI: 10.1109/IWAGPR.2011.5963839

K. Jadoon, F. André, J. van der Kruk, E. Slob, H. Vereecken, S. Lambot

{"title":"Ground-penetrating radar characterization of water as a function of frequency, salinity and temperature","authors":"K. Jadoon, F. André, J. van der Kruk, E. Slob, H. Vereecken, S. Lambot","doi":"10.1109/IWAGPR.2011.5963839","DOIUrl":"https://doi.org/10.1109/IWAGPR.2011.5963839","url":null,"abstract":"We conducted a laboratory experiment to test the ground penetrating radar (GPR) full-waveform forward and inverse modeling approach for electromagnetic wave propagation in water. The GPR system consisted of a vector network analyzer combined with an air-launched, 0.8–2.2 GHz horn antenna, thereby setting up an ultra wideband stepped-frequency continuous-wave radar. The apparent frequency-, salinity-, and temperature-dependent dielectric permittivity and electrical conductivity of water were estimated by using existing electrical models. Using these models, the radar data could be simulated and a remarkable agreement was obtained with the laboratory measurements. Neglecting the frequency-, salinity-, and temperature-effects led to less satisfactory results, especially regarding signal amplitude. Inversion of the radar data permitted to reconstruct the air and water layer thicknesses, and to some extent, the water electrical properties. This analysis particularly showed the benefit of using proper water electrical models compared to commonly used simplified approaches in GPR forward and inverse modeling.","PeriodicalId":130006,"journal":{"name":"2011 6th International Workshop on Advanced Ground Penetrating Radar (IWAGPR)","volume":"31 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":"116220490","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