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

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“Spurious” analysis of a wide bandwidth undersampled digitally heterodyned SFGPR 宽带欠采样数字外差SFGPR的“杂散”分析
2011 6th International Workshop on Advanced Ground Penetrating Radar (IWAGPR) Pub Date : 2011-07-24 DOI: 10.1109/IGARSS.2011.6049268
G. Galiero, D. Adirosi, G. Alberti
{"title":"“Spurious” analysis of a wide bandwidth undersampled digitally heterodyned SFGPR","authors":"G. Galiero, D. Adirosi, G. Alberti","doi":"10.1109/IGARSS.2011.6049268","DOIUrl":"https://doi.org/10.1109/IGARSS.2011.6049268","url":null,"abstract":"A key aspect of a previously proposed undersampled digitally heterodyned stepped frequency GPR is the capability to generate and acquire a large band of frequencies. This is obtained by moving most of the analog domain functionalities of the SFGPR into the digital one. In this paper an analysis of the aliased images generated by the digital frequency generator is performed. Its necessity is dictated by the large bandwidth needed to be generated to achieve high resolution and by the undersampling scheme chosen. The analysis was performed with the aid of different software tools developed ad hoc in a high level language. The key aspects of the analysis and its main results are discussed and illustrated.","PeriodicalId":130006,"journal":{"name":"2011 6th International Workshop on Advanced Ground Penetrating Radar (IWAGPR)","volume":"100 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115819946","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: 0
GPR survey at the archaeological roman site of Ciavieja, El Ejido (Spain) 西班牙埃尔埃西多的Ciavieja罗马考古遗址的探地雷达探测
2011 6th International Workshop on Advanced Ground Penetrating Radar (IWAGPR) Pub Date : 2011-06-22 DOI: 10.3997/1873-0604.2013028
C. M. de Jong van Coevorden, C. Cobos Sánchez, M. Fernández Pantoja, Salvador Gonzalez Garcia, A. Rubio Bretones, R. Gómez Martin, A. Faize, A. Driouach
{"title":"GPR survey at the archaeological roman site of Ciavieja, El Ejido (Spain)","authors":"C. M. de Jong van Coevorden, C. Cobos Sánchez, M. Fernández Pantoja, Salvador Gonzalez Garcia, A. Rubio Bretones, R. Gómez Martin, A. Faize, A. Driouach","doi":"10.3997/1873-0604.2013028","DOIUrl":"https://doi.org/10.3997/1873-0604.2013028","url":null,"abstract":"This paper describes the ground penetrating radar (GPR) survey performed on the archaeological site of Ciavieja, El Ejido (Spain). It is part of historical studies performed in Ciavieja in order to add information to previous studies and also to analyze the extent and importance of the remains buried in this site. The objective of the GPR survey was to locate the most promising areas within the archaeological site to help the architects and archaeologists with an optimal design for the park. The time slices built with the radar data show several locations with linear and square anomalies with sizes compatible with the ones of Roman walls or roman house rooms.","PeriodicalId":130006,"journal":{"name":"2011 6th International Workshop on Advanced Ground Penetrating Radar (IWAGPR)","volume":"196 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":"121318011","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
Evaluation of geotechnical stability of road using GPR 用探地雷达评价道路岩土稳定性
2011 6th International Workshop on Advanced Ground Penetrating Radar (IWAGPR) Pub Date : 2011-06-22 DOI: 10.1109/IWAGPR.2011.5963858
A. Benedetto, F. Tosti, G. Schettini, C. Twizere
{"title":"Evaluation of geotechnical stability of road using GPR","authors":"A. Benedetto, F. Tosti, G. Schettini, C. Twizere","doi":"10.1109/IWAGPR.2011.5963858","DOIUrl":"https://doi.org/10.1109/IWAGPR.2011.5963858","url":null,"abstract":"Recently the road networks are more and more exposed to an increased landslide risk. It is generally caused by heavy weather conditions and a severe deficit of maintenance. Usually, it is easy to locate the damage as it becomes visible whereas it is difficult to identify the causes. In order to diagnose the damage before it becomes visible and severe, to identify the main cause and to implement the most effective rehabilitation measure, we propose the use of Ground Penetrating Radar for geotechnical inspection of pavement and sub-pavement layers. Different equipments were used and a survey protocol was tested in several situations characterized by landslide movements with different degrees of severity. For the inspection, 600, 1000 and 1600 MHz antennae were used. The 1 GHz horn antenna was used for a first survey at traffic speed in order to reduce traffic interference and to locate any possible anomaly. The other dipole antennae were used for more detailed investigations. GPR data were post-processed in the time and frequency domain, using the “Surface reflection method” and the Rayleigh scattering. This approach provides an innovative method that can be applied for accurate and non-invasive monitoring of alert conditions near to road pavements.","PeriodicalId":130006,"journal":{"name":"2011 6th International Workshop on Advanced Ground Penetrating Radar (IWAGPR)","volume":"54 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":"116202117","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: 16
Monitoring the evolution of water and chloride in concrete using GPR full-waveform inversion 利用探地雷达全波形反演监测混凝土中水和氯化物的演变
2011 6th International Workshop on Advanced Ground Penetrating Radar (IWAGPR) Pub Date : 2011-06-22 DOI: 10.1109/IWAGPR.2011.5963904
A. Kalogeropoulos, J. van der Kruk, J. Hugenschmidt
{"title":"Monitoring the evolution of water and chloride in concrete using GPR full-waveform inversion","authors":"A. Kalogeropoulos, J. van der Kruk, J. Hugenschmidt","doi":"10.1109/IWAGPR.2011.5963904","DOIUrl":"https://doi.org/10.1109/IWAGPR.2011.5963904","url":null,"abstract":"The assessment of ageing concrete structures is a major technical challenge faced by the Civil Engineers of today. Concrete bridges are exposed to corrosion from the spreading of de-icing salts on roads during winter. Corrosion is problematic because it reduces the reinforcement's load carrying capacity and a long-term consequence can be structural failure. This paper describes an experiment that consisted in exposing a concrete specimen to a controlled wetting-drying cycle using a saline solution. This setup enabled the concentration of chlorides to be distributed in gradients inside the specimen. A novel methodology to estimate material properties, based on ground penetrating radar (GPR) full-waveform inversion, was used to process GPR traces. In this paper, each reflection present in the trace was regarded independently. This procedure was applied to a dataset acquired with bistatic off-ground GPR antennas. Measurements were carried out above the test specimen at regular time lapses. This allowed monitoring of the electromagnetic parameters of the top and bottom concrete specimen surfaces during the wetting-drying cycle.","PeriodicalId":130006,"journal":{"name":"2011 6th International Workshop on Advanced Ground Penetrating Radar (IWAGPR)","volume":"46 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":"125788540","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
Crack detection in asphalt pavements - How useful is the GPR? 沥青路面的裂缝检测-探地雷达有多有用?
2011 6th International Workshop on Advanced Ground Penetrating Radar (IWAGPR) Pub Date : 2011-06-22 DOI: 10.1109/IWAGPR.2011.5963857
N. Ahmad, H. Lorenzl, M. Wistuba
{"title":"Crack detection in asphalt pavements - How useful is the GPR?","authors":"N. Ahmad, H. Lorenzl, M. Wistuba","doi":"10.1109/IWAGPR.2011.5963857","DOIUrl":"https://doi.org/10.1109/IWAGPR.2011.5963857","url":null,"abstract":"Cracking is a common distress type in asphalt pavements causing degradation of bearing capacity of subsurface layers and putting user's safety on stakes. Therefore, cracks must be detected and cured. Conventional, destructive methods for crack detection are usually time-consuming and expensive. Ground Penetration Radar (GPR) has been successfully used since decades as a non-destructive tool for pavement characterization. The question now is, if GPR can also be employed as a crack detection tool for monitoring asphalt pavement. In this case study, GPR was used for crack detection in asphalt pavements. The tests were conducted on asphalt specimens prepared in the laboratory, and on asphalt pavement roads.","PeriodicalId":130006,"journal":{"name":"2011 6th International Workshop on Advanced Ground Penetrating Radar (IWAGPR)","volume":"36 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":"121975197","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: 9
Determining bulk density of mine rock piles using ground penetrating radar frequency downshift 利用探地雷达降频法测定矿山岩桩容重
2011 6th International Workshop on Advanced Ground Penetrating Radar (IWAGPR) Pub Date : 2011-06-22 DOI: 10.1109/IWAGPR.2011.5963892
A. Benter, M. Antolovich, W. Moore
{"title":"Determining bulk density of mine rock piles using ground penetrating radar frequency downshift","authors":"A. Benter, M. Antolovich, W. Moore","doi":"10.1109/IWAGPR.2011.5963892","DOIUrl":"https://doi.org/10.1109/IWAGPR.2011.5963892","url":null,"abstract":"New mining processes are moving toward driverless, autonomous vehicles, however, these will require the ability to detect and avoid large fragments which may block crusher activities. A detection system that can penetrate the surface of the rock pile and determine the presence of over-sized fragments could assist the system in avoiding large fragments. This paper presents the results of experiments with Ground Penetrating Radar (GPR) showing it is possible to use centroid frequency downshift to determine bulk density of the media as an indicator of fragment size. This research is based on an underground mine currently under construction.","PeriodicalId":130006,"journal":{"name":"2011 6th International Workshop on Advanced Ground Penetrating Radar (IWAGPR)","volume":"53 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":"132194611","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: 7
Toward a complete forward model for underground imaging Using RF tomography 利用射频层析成像建立完整的地下成像正演模型
2011 6th International Workshop on Advanced Ground Penetrating Radar (IWAGPR) Pub Date : 2011-06-22 DOI: 10.1109/IWAGPR.2011.5963906
L. Lo Monte, M. Wicks, F. Soldovieri, D. Erricolo
{"title":"Toward a complete forward model for underground imaging Using RF tomography","authors":"L. Lo Monte, M. Wicks, F. Soldovieri, D. Erricolo","doi":"10.1109/IWAGPR.2011.5963906","DOIUrl":"https://doi.org/10.1109/IWAGPR.2011.5963906","url":null,"abstract":"The forward model for underground imaging using RF tomography is extended to account for elementary loops as transmitters and/or receivers. The theory of RF tomography remains applicable, provided that opportune dyadic Green's functions are derived and expressed explicitly. We will present new formulas and derivations that consent the use of RF Tomography for any arbitrary choice of the Tx/Rx sensor.","PeriodicalId":130006,"journal":{"name":"2011 6th International Workshop on Advanced Ground Penetrating Radar (IWAGPR)","volume":"16 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":"128870420","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
2D GPR imaging via Linear Sampling Method: A performance assessment tool 线性采样法二维探地雷达成像:一种性能评估工具
2011 6th International Workshop on Advanced Ground Penetrating Radar (IWAGPR) Pub Date : 2011-06-22 DOI: 10.1109/IWAGPR.2011.5963862
I. Catapano, F. Soldovieri, L. Crocco
{"title":"2D GPR imaging via Linear Sampling Method: A performance assessment tool","authors":"I. Catapano, F. Soldovieri, L. Crocco","doi":"10.1109/IWAGPR.2011.5963862","DOIUrl":"https://doi.org/10.1109/IWAGPR.2011.5963862","url":null,"abstract":"In this communication we discuss the adoption of the Linear Sampling Method (LSM) to data collected within a GPR array-based configuration. In particular, since this simple and effective non-iterative method requires multi-static multiview data to perform the imaging task, we introduce an analytic tool to appraise the relationship between the array aperture and the method's performance and provide numerical examples to show the feasibility of the LSM in 2-D GPR surveys.","PeriodicalId":130006,"journal":{"name":"2011 6th International Workshop on Advanced Ground Penetrating Radar (IWAGPR)","volume":"32 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":"115777386","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: 7
Experimental studies of subsurface target discrimination using a phase-based microwave imaging method 基于相位的微波成像法地下目标识别实验研究
2011 6th International Workshop on Advanced Ground Penetrating Radar (IWAGPR) Pub Date : 2011-06-22 DOI: 10.1109/IWAGPR.2011.5963908
V. Mikhnev, P. Vainikainen
{"title":"Experimental studies of subsurface target discrimination using a phase-based microwave imaging method","authors":"V. Mikhnev, P. Vainikainen","doi":"10.1109/IWAGPR.2011.5963908","DOIUrl":"https://doi.org/10.1109/IWAGPR.2011.5963908","url":null,"abstract":"In this work, performance of a novel two-parameter method of microwave subsurface visualization has been studied with the use of experimental data. The method is based on building the image of subsurface area in which the amplitude data govern intensity of the pixels whereas their color is associated with phase information. The phase is understood here as the phase shift related to the reflection act from the buried object. As this phase depends on dielectric properties of buried target, one can distinguish targets by their phase profile. It is shown that the images of different buried objects built with the use of experimental data differ considerably that allows distinguishing them. On the other hand, the phase profiles of the same object are found to be quite stable with respect to its depth ranging from moderate to shallow. This is important for reliability of the discrimination.","PeriodicalId":130006,"journal":{"name":"2011 6th International Workshop on Advanced Ground Penetrating Radar (IWAGPR)","volume":"23 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":"114731937","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
Using FDTD modelling to inform the tomographic imaging of buried utility pipes via GPR investigation 利用时域有限差分(FDTD)建模，通过探地雷达探测，为埋地公用管道的层析成像提供信息
2011 6th International Workshop on Advanced Ground Penetrating Radar (IWAGPR) Pub Date : 2011-06-22 DOI: 10.1109/IWAGPR.2011.5963866
T. M. Millington, N. Cassidy, L. Crocco, F. Soldovieri
{"title":"Using FDTD modelling to inform the tomographic imaging of buried utility pipes via GPR investigation","authors":"T. M. Millington, N. Cassidy, L. Crocco, F. Soldovieri","doi":"10.1109/IWAGPR.2011.5963866","DOIUrl":"https://doi.org/10.1109/IWAGPR.2011.5963866","url":null,"abstract":"In this paper, we present the results of an on-going practical study into the development of novel FDTD numerical modelling and linear tomographic inversion methods for the interpretation and analysis of near-surface GPR data. The performance of these methods is evaluated against a simulated test-case example in which GPR data is collected over a realistic buried utility pipe model. The inversion approach is based on the Born approximation to the inverse-scattering problem and uses a Truncated Singular Value Decomposition (TSVD) to create the regularized solution. We asses whether informing the inversion by using a three-dimensional, full-field, O(2,4) accurate FDTD modelling scheme to calculate the incident field Green's functions improves the reconstruction outcome. By using a flexible modelling tool the antenna geometry, the air-ground interface and know subsurface artifacts are readily taken into account. The results show that the reconstruction images are made more accurate as the background scenario approached the (model) ground truth.","PeriodicalId":130006,"journal":{"name":"2011 6th International Workshop on Advanced Ground Penetrating Radar (IWAGPR)","volume":"28 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":"123548083","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
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