2007 4th International Workshop on, Advanced Ground Penetrating Radar最新文献_第4页

GPR Antenna Test Facility at IRCTR-IB ircr - ib的探地雷达天线测试设施

2007 4th International Workshop on, Advanced Ground Penetrating Radar Pub Date : 2007-06-27 DOI: 10.1109/AGPR.2007.386557

A. A. Lestari, D. Yulian, Liarto, T. P. Soetikno, A. B. Suksmonol, E. Bharata, A. Yarovoy, L. Ligthart

引用次数: 2

Metal-sheet test to estimate shape and frequency content of the radar pulse 估计雷达脉冲的形状和频率含量的金属片试验

2007 4th International Workshop on, Advanced Ground Penetrating Radar Pub Date : 2007-06-27 DOI: 10.1109/AGPR.2007.386559

L. Nuzzo, T. Quarta

{"title":"Metal-sheet test to estimate shape and frequency content of the radar pulse","authors":"L. Nuzzo, T. Quarta","doi":"10.1109/AGPR.2007.386559","DOIUrl":"https://doi.org/10.1109/AGPR.2007.386559","url":null,"abstract":"Appropriate GPR data processing and inversion require a reliable estimation of the radar pulse. In particular the knowledge of the shape and frequency content of the wavelet sent into the ground is an important issue not only for processing an interpreting reflection profilles, but also for GPR tomography, especially for amplitude tomography. Common practice considers the nominal antenna frequency as a measure of the bandwidth of the radar wavelet in the air, which in turn is assumed to be equal to the peak (dominant) frequency. Raising the antenna above a totally-reflecting metallic slab is the simplest way to gain information on the shape of the radar pulse in the air. This is the experimental calibration method generally used for correcting zero-time drift and to obtain a reference signal for amplitude analysis. This method was applied in this study to extract information on the frequency content of the emitted radar wave. Experimental errors related to ambient noise and positioning inaccuracies impose great care for a correct extraction of the needed attributes. The same test was also useful to gain insights into the influence of the filters applied in the acquisition stage.","PeriodicalId":411104,"journal":{"name":"2007 4th International Workshop on, Advanced Ground Penetrating Radar","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116865525","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

A Clutter Canceller for Continuous Wave GPR 连续波探地雷达的杂波消除器

2007 4th International Workshop on, Advanced Ground Penetrating Radar Pub Date : 2007-06-27 DOI: 10.1109/AGPR.2007.386554

G. Grazzini, M. Pieraccini, F. Parrini, C. Atzeni

引用次数: 8

Localization of small PEG spheres by multiview/singie-frequency data: numerical results 多视角/单频数据定位聚乙二醇小球:数值结果

2007 4th International Workshop on, Advanced Ground Penetrating Radar Pub Date : 2007-06-27 DOI: 10.1109/AGPR.2007.386547

R. Solimene, A. Buonanno, R. Pierri

引用次数: 0

Shape reconstruction of three dimensional buried objects from stepped frequency data 基于阶跃频率数据的三维地埋物形状重建

2007 4th International Workshop on, Advanced Ground Penetrating Radar Pub Date : 2007-06-27 DOI: 10.1109/AGPR.2007.386548

I. Catapano, L. Crocco, T. Isernia

引用次数: 0

A Stakeholder Led Accuracy Assessment System for Utility Location 利益相关者主导的公用事业定位精度评估系统

2007 4th International Workshop on, Advanced Ground Penetrating Radar Pub Date : 2007-06-27 DOI: 10.1109/AGPR.2007.386566

A. Thomas, C. Rogers, N. Metje, D. Chapman

{"title":"A Stakeholder Led Accuracy Assessment System for Utility Location","authors":"A. Thomas, C. Rogers, N. Metje, D. Chapman","doi":"10.1109/AGPR.2007.386566","DOIUrl":"https://doi.org/10.1109/AGPR.2007.386566","url":null,"abstract":"In the UK alone there are many millions of miles of underground utilities and records concerning their location are often inaccurate, incomplete, or non-existent. As well as posing significant health and safety problems to construction personnel, this problem brings with it large social and financial costs. This has led to increasing use of Ground Penetrating RADAR (GPR) for utility location, but without detailed consideration of its efficacy in terms of location accuracy. Therefore, Mapping the Underworld (MTU), a multi-university research project aimed at ensuring improved accuracy in utility location, has been actively engaged in stakeholder consultation. As well as providing much useful data on stakeholder needs, this is also providing a methodology for the assessment of GPR utility location in terms of the factor of most importance to them - the degree to which the equipment provides location within their own accuracy requirements. Also, in order to provide consistency in the assessment methodology, MTU intends to construct a state-of-the-art test facility for assessing location equipment accuracy within tight tolerances. This will yield a combined methodology for reliable testing of location equipment, coupled to an accuracy assessment system weighted in a manner acceptable to stakeholders.","PeriodicalId":411104,"journal":{"name":"2007 4th International Workshop on, Advanced Ground Penetrating Radar","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122463792","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 imaging of a 4th Century Roman Fort, Humayma, Jordan 约旦胡迈马一座4世纪罗马堡垒的探地雷达成像

2007 4th International Workshop on, Advanced Ground Penetrating Radar Pub Date : 2007-06-27 DOI: 10.1109/AGPR.2007.386524

G. Baker, H. Ambrose

引用次数: 2

Principle of a direction sensitive borehole antenna with advanced technology and data examples 方向敏感钻孔天线的原理及先进技术和数据实例

2007 4th International Workshop on, Advanced Ground Penetrating Radar Pub Date : 2007-06-27 DOI: 10.1109/AGPR.2007.386519

V. Gundelach, D. Eisenburger

引用次数: 4

Inversion of dispersive APVO GPR curves: a thin-layer approach for fracture characterization on a vertical cliff 色散APVO探地雷达曲线反演:垂直悬崖裂缝表征的薄层方法

2007 4th International Workshop on, Advanced Ground Penetrating Radar Pub Date : 2007-06-27 DOI: 10.1109/AGPR.2007.386523

J. Deparis, S. Garambois

{"title":"Inversion of dispersive APVO GPR curves: a thin-layer approach for fracture characterization on a vertical cliff","authors":"J. Deparis, S. Garambois","doi":"10.1109/AGPR.2007.386523","DOIUrl":"https://doi.org/10.1109/AGPR.2007.386523","url":null,"abstract":"Reliability of stability assessment of prone to fall rock masses suffers from the lack of information about the geometry and the properties of the fracture networks. GPR profiles associated to Common Mid-Point (CMP) data, all recorded on the cliff wall, recently proved their efficiency to image correctly the extension of fractures with a satisfying resolution. However, besides velocity, CMP data also contain information generally not used, i.e. Amplitude and Phase variations of the reflectivity for a given reflector as function of Offset (APVO) and frequency. In this study, we analyzed the potential of these curves in the context of thin layers, where multiple reflections generate interferences and complex patterns. We notably present an inversion of real APVO curves derived from a CMP profile acquired directly on a limestone cliff wall. The reflected wave was primary deconvoluated in order to correct wave propagation effects and to evaluate radiation patterns. In a second step, APVO curves were inverted considering a neighborhood algorithm. This procedure permitted to obtain the Jonscher parameters describing the complex permittivity of the thin-layer and of the limestone formation, as well as the aperture and depth of the studied fracture.","PeriodicalId":411104,"journal":{"name":"2007 4th International Workshop on, Advanced Ground Penetrating Radar","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121096901","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

Directional Borehole Radar Calibration 定向井眼雷达校准

2007 4th International Workshop on, Advanced Ground Penetrating Radar Pub Date : 2007-06-27 DOI: 10.1109/AGPR.2007.386517

O. Borchert, M. Aliman, A. Glasmachers

引用次数: 19