2016 16th International Conference on Ground Penetrating Radar (GPR)最新文献_第7页

Electromagnetic Marchenko imaging in 1D 一维电磁马尔琴科成像

2016 16th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2016-06-13 DOI: 10.1109/ICGPR.2016.7572703

Lele Zhang, E. Slob

引用次数: 0

Imaging LNAPLs contaminated soils by polarimetrie migration 利用极化迁移成像LNAPLs污染土壤

2016 16th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2016-06-13 DOI: 10.1109/ICGPR.2016.7572672

B. Shi, Q. Lu, Xuan Feng, Cai Liu, Yue Yu

引用次数: 0

Three-dimensional reverse-time migration applied to a MIMO GPR system for subsurface imaging 三维逆时偏移应用于MIMO探地雷达系统的地下成像

2016 16th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2016-06-13 DOI: 10.1109/ICGPR.2016.7572682

H. Liu, Y. X. Zhang, Z. Long, F. Han, Q. H. Liu

引用次数: 5

Electromagnetic Marchenko equations for a dissipative heterogeneous medium 耗散非均质介质的电磁Marchenko方程

2016 16th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2016-06-13 DOI: 10.1109/ICGPR.2016.7572702

E. Slob, Lele Zhang

引用次数: 2

Modeling of stepped-frequency radar wave propagation through partially wet limestone 步进频率雷达波在部分湿石灰岩中的传播模拟

2016 16th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2016-06-13 DOI: 10.1109/ICGPR.2016.7572691

B. Guan, A. Ihamouten, D. Guilbert, Frédéric Bosc, Xavier Dérobert, G. Villain, S. Lambot

{"title":"Modeling of stepped-frequency radar wave propagation through partially wet limestone","authors":"B. Guan, A. Ihamouten, D. Guilbert, Frédéric Bosc, Xavier Dérobert, G. Villain, S. Lambot","doi":"10.1109/ICGPR.2016.7572691","DOIUrl":"https://doi.org/10.1109/ICGPR.2016.7572691","url":null,"abstract":"Limestone is a widely used building material. Its degradation process is strongly linked to the water content, to which the radar waves are sensitive. In this paper, a model of stepped-frequency radar (SFR) wave propagation through partially wet limestone is proposed, in order to study the water transfer front in limestone. We assume the limestone as a two-layer (dry/wet) lossy medium and use an analytical model which combines Lambot's closed-form antenna model with zero-offset single-point Green's function and Jonscher's medium property model to describe the SFR wave propagation. It takes into account the frequency-dependence of dielectric properties using a frequency power law. We validate this model using a numerical verification platform based on HFSS, which is a commercial finite element method solver for electromagnetic structures. The frequency dependent complex permittivities coming from coaxial transmission line experiments are converted to the input of our analytical model and that of HFSS. The comparison on return loss S11 shows that the correspondence is very good, thus demonstrating the performance of this proposed model, which takes into account the effect of material dispersion.","PeriodicalId":187048,"journal":{"name":"2016 16th International Conference on Ground Penetrating Radar (GPR)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127539779","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

Quantification of Arctic soil and permafrost properties using ground penetrating radar 利用探地雷达量化北极土壤和永久冻土性质

2016 16th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2016-06-13 DOI: 10.1109/ICGPR.2016.7572663

B. Dafflon, E. Léger, F. Soom, C. Ulrich, J. Peterson, S. Hubbard

{"title":"Quantification of Arctic soil and permafrost properties using ground penetrating radar","authors":"B. Dafflon, E. Léger, F. Soom, C. Ulrich, J. Peterson, S. Hubbard","doi":"10.1109/ICGPR.2016.7572663","DOIUrl":"https://doi.org/10.1109/ICGPR.2016.7572663","url":null,"abstract":"Improving understanding of Arctic ecosystem functioning and parameterization of models that simulate freeze-thaw dynamics require advances in quantifying soil and snow properties. Due to the significant spatiotemporal variability of soil properties and the limited information provided by point-scale measurements (e.g., cores), geophysical methods hold potential for improving soil and permafrost characterization. In this study, we evaluate the use of Ground Penetrating Radar (GPR) to estimate thaw layer thickness, snow depth and ice-wedge characteristics in polygonal-shaped tundra in Barrow, AK. To this end, we analyze GPR and point-scale measurements collected along several parallel transects at the end of the growing season and the end of winter. A synthetic study is also performed to understand the GPR signal response to ice-wedge characteristics. Results show that GPR data collected during the growing season provide reliable estimates of thaw depth although strong spatial heterogeneity in soil properties can impair the estimates. While previous studies have documented the value of GPR for providing thaw depth estimates during the growing season, results from this study suggest that GPR methods are also useful for estimating active layer thickness during the frozen season, snow thickness and geometry of permafrost features, such as ice-wedges.","PeriodicalId":187048,"journal":{"name":"2016 16th International Conference on Ground Penetrating Radar (GPR)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122899304","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

An apparatus for collecting upward-looking GPR surveys in potash mines 一种在钾肥矿中收集向上探地雷达探测数据的装置

2016 16th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2016-06-13 DOI: 10.1109/ICGPR.2016.7572684

C. Funk, R. Brehm, A. Errington, K. Backstrom

{"title":"An apparatus for collecting upward-looking GPR surveys in potash mines","authors":"C. Funk, R. Brehm, A. Errington, K. Backstrom","doi":"10.1109/ICGPR.2016.7572684","DOIUrl":"https://doi.org/10.1109/ICGPR.2016.7572684","url":null,"abstract":"GPR has been used routinely in Saskatchewan, Canada, potash mines for nearly forty years. In general, the purpose of GPR surveys in potash mines is to map the salt-bed stratigraphy above and below the mined-out rooms. The stratigraphy in the Saskatoon, Saskatchewan area mines consists of a series of salt and potash beds separated by well-known and regionally distributed planar clay seams. The salt-beds have very low electrical conductivity, which makes GPR highly effective for imaging the clay seams. Collecting downward-looking GPR data in potash mines is straightforward, as the mine personnel can use standard off-the-shelf GPR equipment (push carts for example). Successful and safe collection of upward-looking GPR data is considerably more challenging. The terrain is uneven, there are numerous obstacles, and room heights are quite variable. Typical Saskatchewan potash mines are very large, with 100s of kilometers of operational mine rooms, so a solution which permits seamless collection of upward-looking GPR data was needed. This paper presents the evolution of various apparatus used for collecting upward-looking GPR data in potash mines. The work eventually led to the development of a Kubota RTV mounted light-weight floating lift. This apparatus is known as a GPR-RTV, and it successfully overcame the many challenges to routine upward-looking GPR data collection in potash mines. Some data examples are presented to illustrate the effectiveness of the GPR-RTV. Finally, although this discussion focuses on applications in potash mines, it is envisioned that the GPR-RTV could be used safely in a variety of conventional mining and tunneling environments.","PeriodicalId":187048,"journal":{"name":"2016 16th International Conference on Ground Penetrating Radar (GPR)","volume":"76 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121568038","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: 4

A nanosecond pulse generator based on avalanche transistor 一种基于雪崩晶体管的纳秒脉冲发生器

2016 16th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2016-06-13 DOI: 10.1109/ICGPR.2016.7572649

K. Zhou, C. Huang, M. Lu

引用次数: 2

The study of the ice crossings on the rivers by the ground-penetrating radar 用探地雷达研究河流上的冰点

2016 16th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2016-06-13 DOI: 10.1109/ICGPR.2016.7572625

M. Fedorov, L. Fedorova, D. Savvin, A. M. Kulizhnikov

{"title":"The study of the ice crossings on the rivers by the ground-penetrating radar","authors":"M. Fedorov, L. Fedorova, D. Savvin, A. M. Kulizhnikov","doi":"10.1109/ICGPR.2016.7572625","DOIUrl":"https://doi.org/10.1109/ICGPR.2016.7572625","url":null,"abstract":"An ice road will be organized across bodies of water in winter to enable the movement of vehicles and people, thus creating the proper living and operating conditions for the local population and industry. Possible loads and measures necessary to ensure the rigidness of the ice must be considered when setting up such crossings. This article produces the results of research on the ice crossings using GPR. The data was obtained by “OKO-2” with AB-400 (AB-400R), AB-1200, and AB-1700 (AB-1700R) antenna units (OOO “LogiS”, Russia). The final measurements of the river ice were produced by the drilling method. Much time was spent on the adjustment of the research techniques, the efficient assessment of GPR-works by different antenna units, determination of permittivity and the ice structure, and the ice thickness variation along the ice crossings. Surveying of the Lena River by GPR shows that the ice thickness varies from 103 cm to 260 cm. The average ice thickness is 164.5 cm (Yakutsk - Nizhny Bestyakh ice crossing) and 185 cm (Khatassy - Pavlovsk ice crossing) with the coefficients of variation 11.8% and 16% correspondingly. It is established that continuous GPR-data allows the estimation of the ice structure throughout the winter road, consisting of the natural ice, layers of frozen ice, and the snow ice with heterogeneity and cracks in the frozen ice. A possibility to distinguish the layers of the ice cover on the rivers using GPR allows us to determine the estimated ice thickness and avoid errors in setting the carrying capacities of the ice crossings on the rivers.","PeriodicalId":187048,"journal":{"name":"2016 16th International Conference on Ground Penetrating Radar (GPR)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116785580","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

Laboratory investigations for the electromagnetic characterization of railway ballast through GPR 铁路道砟电磁特性探地雷达实验室研究

2016 16th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2016-06-13 DOI: 10.1109/ICGPR.2016.7572605

F. Tosti, A. Benedetto, A. Calvi, L. B. Ciampoli

引用次数: 13