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2021 11th International Workshop on Advanced Ground Penetrating Radar (IWAGPR)最新文献

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Combined migration results and time-depth conversions in two layered media 两层介质的组合偏移结果和时深转换
2021 11th International Workshop on Advanced Ground Penetrating Radar (IWAGPR) Pub Date : 2021-12-01 DOI: 10.1109/iwagpr50767.2021.9843148
R. Persico, Gianfranco Morelli
{"title":"Combined migration results and time-depth conversions in two layered media","authors":"R. Persico, Gianfranco Morelli","doi":"10.1109/iwagpr50767.2021.9843148","DOIUrl":"https://doi.org/10.1109/iwagpr50767.2021.9843148","url":null,"abstract":"In this contribution, we will expose a strategy for mitigating possible differences in the propagation velocity of the electromagnetic waves within a given Bscan. The idea is based on a combination of different migrated results achieved under different assumed values of the propagation velocity. In cases of practical interest, this can also allow an easy time domain conversion coherent with the detected differences of propagation velocity. In particular, here the case of a two layered soil will be considered.","PeriodicalId":170169,"journal":{"name":"2021 11th International Workshop on Advanced Ground Penetrating Radar (IWAGPR)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128325224","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
The Examination of GPR Using Chirp Signal 利用啁啾信号的探地雷达检测
2021 11th International Workshop on Advanced Ground Penetrating Radar (IWAGPR) Pub Date : 2021-12-01 DOI: 10.1109/iwagpr50767.2021.9843188
Toshimitsu Nozu, S. Yamada, K. Yoshida, Toshimune Imai, Kenyu Sakao
{"title":"The Examination of GPR Using Chirp Signal","authors":"Toshimitsu Nozu, S. Yamada, K. Yoshida, Toshimune Imai, Kenyu Sakao","doi":"10.1109/iwagpr50767.2021.9843188","DOIUrl":"https://doi.org/10.1109/iwagpr50767.2021.9843188","url":null,"abstract":"In recent years, there are many accidents caused by roadway cave–ins where the roads were constructed in the past. So the GPR is used as a way to detect the underground cavities for preventing accidents in the future. In the past, when the pulse GPR was used, it was difficult to detect underground cavities because of low power. However, nowadays the GPR system of chirp signal is used in order to detect underground cavities because of high power. This paper is about the examination of a new multi–pass GPR system using chirp signal.","PeriodicalId":170169,"journal":{"name":"2021 11th International Workshop on Advanced Ground Penetrating Radar (IWAGPR)","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133648301","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 Monitoring at the Crypt of Sant’Agnese in Agone Church, Rome, Italy 意大利罗马阿贡教堂圣阿格内塞地穴的探地雷达监测
2021 11th International Workshop on Advanced Ground Penetrating Radar (IWAGPR) Pub Date : 2021-12-01 DOI: 10.1109/iwagpr50767.2021.9843166
G. Ludeno, C. Noviello, Genanrelli Gianluca, F. Soldovieri, I. Catapano
{"title":"GPR Monitoring at the Crypt of Sant’Agnese in Agone Church, Rome, Italy","authors":"G. Ludeno, C. Noviello, Genanrelli Gianluca, F. Soldovieri, I. Catapano","doi":"10.1109/iwagpr50767.2021.9843166","DOIUrl":"https://doi.org/10.1109/iwagpr50767.2021.9843166","url":null,"abstract":"The communication presents a case study dealing with the characterization and monitoring of moisture at the Crypt of Sant’Agnese in Agone Church, Rome, Italy. Ground penetrating radar was employed to perform an electromagnetic characterization of the Crypt walls and identify permittivity variations ascribable to changes of environmental conditions. These last were controlled by means of an Air Decomposition Unit and recorded daily, by using temperature and humidity sensors.","PeriodicalId":170169,"journal":{"name":"2021 11th International Workshop on Advanced Ground Penetrating Radar (IWAGPR)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116478682","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
A digital twin of the GSSI 2000 MHz palm antenna developed using multi-parametric optimisation 使用多参数优化开发的GSSI 2000 MHz手掌天线的数字孪生
2021 11th International Workshop on Advanced Ground Penetrating Radar (IWAGPR) Pub Date : 2021-12-01 DOI: 10.1109/iwagpr50767.2021.9843157
O. Patsia, A. Giannopoulos, I. Giannakis
{"title":"A digital twin of the GSSI 2000 MHz palm antenna developed using multi-parametric optimisation","authors":"O. Patsia, A. Giannopoulos, I. Giannakis","doi":"10.1109/iwagpr50767.2021.9843157","DOIUrl":"https://doi.org/10.1109/iwagpr50767.2021.9843157","url":null,"abstract":"Numerical modelling of Ground Penetrating Radar (GPR) has been extensively used to both predict and assess its performance. As the transmitting and receiving antennas are one of the most fundamental elements of a GPR system, an accurate representation of them should be included in a model if the simulations is to be close in reproducing the actual GPR signal with a good degree of fidelity. In this paper, a three-dimensional model of a 2000 MHz “palm” antenna from Geophysical Survey Systems, Inc. (GSSI) is presented. Values for unknown dielectric properties of key elements were estimated using a genetic algorithm (GA) and a particle swarm optimization (PSO) scheme. The results were compared with real responses obtained in free-space and above a metal plate, showing good agreement. Further validation has been done using real data from realistic scenarios, resulting in a very good match with the simulations.","PeriodicalId":170169,"journal":{"name":"2021 11th International Workshop on Advanced Ground Penetrating Radar (IWAGPR)","volume":"97 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133999335","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
GPR Investigations at the Monastery of S. Chiara (Nardó, south Italy) 圣基亚拉修道院的探地雷达调查(Nardó，意大利南部)
2021 11th International Workshop on Advanced Ground Penetrating Radar (IWAGPR) Pub Date : 2021-12-01 DOI: 10.1109/iwagpr50767.2021.9843150
G. Leucci, F. Comisi, L. De Giorgi, L. Longhitano, Giancarlo De Pascalis
{"title":"GPR Investigations at the Monastery of S. Chiara (Nardó, south Italy)","authors":"G. Leucci, F. Comisi, L. De Giorgi, L. Longhitano, Giancarlo De Pascalis","doi":"10.1109/iwagpr50767.2021.9843150","DOIUrl":"https://doi.org/10.1109/iwagpr50767.2021.9843150","url":null,"abstract":"The Monastery of S. Chiara is located in the city of Nardò (Lecce, Italy). It is the oldest Monastery in southern Italy. In fact it was erected in 1256, only three years after the birth of St. Chiara in heaven.Tommaso Gentile, Count of Nardò, opened the doors of the medieval city walls to receive the first Clarisse nuns. A study was undertaken in some areas inside of the Monastery in order to investigate the buried archaeological structures. The ground-penetrating radar methodology was applied. GPR data analysis show interesting electromagnetic wave reflection events that could be related to archaeological remains.","PeriodicalId":170169,"journal":{"name":"2021 11th International Workshop on Advanced Ground Penetrating Radar (IWAGPR)","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133120982","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
Evidence of attenuation and interference phenomena in GPR signals for archaeological application 考古用探地雷达信号衰减和干扰现象的证据
2021 11th International Workshop on Advanced Ground Penetrating Radar (IWAGPR) Pub Date : 2021-12-01 DOI: 10.1109/iwagpr50767.2021.9843180
I. Barone, M. Rossi, R. Deiana, Alessandro Mazzariol
{"title":"Evidence of attenuation and interference phenomena in GPR signals for archaeological application","authors":"I. Barone, M. Rossi, R. Deiana, Alessandro Mazzariol","doi":"10.1109/iwagpr50767.2021.9843180","DOIUrl":"https://doi.org/10.1109/iwagpr50767.2021.9843180","url":null,"abstract":"We conducted an extensive geophysical field campaign using ground-penetrating radar (GPR) and electrical resistivity tomography (ERT) in a former military area at the archaeological site of Nora (South-Western Sardinia). The purpose was to identify a Phoenician, and then Punic and Roman, necropolis of considerable interest, subject of a long-term investigation and currently under excavation. In the same area other buried structures, including a Roman road, were also investigated. The ERT and GPR surveys (the latter conducted with two different frequencies - 200 and 600 MHz), carried out in a sector where the Roman road was known to exist, did not reveal any clear evidence of the presence of this structure. However, the road was then found, by direct excavation, at 0.5 m depth. The failure in the identification of the road at this shallow depth has therefore led to hypothesize possible phenomena of high GPR signal attenuation and/or destructive interference related to the geometry and specific characteristics of the system. We performed synthetic GPR modeling by using the information provided by the excavation and constrained, in terms of electrical conductivity, by ERT measurements. The preliminary results of this simulation confirm the hypothesis of interference and attenuation phenomena, suggesting how the GPR signal may fail to provide an apparently simple piece of information at this archaeological site.","PeriodicalId":170169,"journal":{"name":"2021 11th International Workshop on Advanced Ground Penetrating Radar (IWAGPR)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124662889","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
Realistic Railway Ballast FDTD Simulations for Ground Penetrating Radar Railway Track Inspection 探地雷达轨道检测中真实铁路道砟FDTD仿真
2021 11th International Workshop on Advanced Ground Penetrating Radar (IWAGPR) Pub Date : 2021-12-01 DOI: 10.1109/iwagpr50767.2021.9843175
T. Kingsuwannaphong, Christian Bräu, Stefan Rümmler, F. Rial, D. Heberling
{"title":"Realistic Railway Ballast FDTD Simulations for Ground Penetrating Radar Railway Track Inspection","authors":"T. Kingsuwannaphong, Christian Bräu, Stefan Rümmler, F. Rial, D. Heberling","doi":"10.1109/iwagpr50767.2021.9843175","DOIUrl":"https://doi.org/10.1109/iwagpr50767.2021.9843175","url":null,"abstract":"This work presents an effective way to model realistic railway ballast conditions that can be incorporated in a FDTD EM solver for GPR applications. The results are compared with real measurements in controlled environments that try to replicate the models. Preliminary results look promising, and there is a valuable potential for its application in a wide range of topics related with this technology like: sensor design, acquisition methodologies, algorithm testing, machine learning approaches or inverse imaging.","PeriodicalId":170169,"journal":{"name":"2021 11th International Workshop on Advanced Ground Penetrating Radar (IWAGPR)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124490846","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
Classification of objects buried in inhomogeneous medium by artificial neural network using data obtained by impulse GPR with 1 Tx+ 4Rx antenna system 利用脉冲探地雷达1 Tx+ 4Rx天线系统获取的数据，利用人工神经网络对非均匀介质中埋地目标进行分类
2021 11th International Workshop on Advanced Ground Penetrating Radar (IWAGPR) Pub Date : 2021-12-01 DOI: 10.1109/iwagpr50767.2021.9843169
O. Pryshchenko, O. Dumin, V. Plakhtii, G. Pochanin
{"title":"Classification of objects buried in inhomogeneous medium by artificial neural network using data obtained by impulse GPR with 1 Tx+ 4Rx antenna system","authors":"O. Pryshchenko, O. Dumin, V. Plakhtii, G. Pochanin","doi":"10.1109/iwagpr50767.2021.9843169","DOIUrl":"https://doi.org/10.1109/iwagpr50767.2021.9843169","url":null,"abstract":"The detection of objects in random inhomogeneous medium by processing signals received by means of ground penetrating radar using artificial neural network is presented in the work. The simulation of impulse wave propagation through inhomogeneous medium and reflection from an object is carried out by FDTD method. The medium is a model of a soil with inclusions of random placement, size, and permittivity. The buried objects are the model of real antipersonnel mines. Four-element antenna system produces four different signals used after discretization as input data for artificial neural networks. The network is trained to recognize the object and its position for different models of random inhomogeneities of the medium. Its work is checked for the case of presence of Gaussian noise in received signals.","PeriodicalId":170169,"journal":{"name":"2021 11th International Workshop on Advanced Ground Penetrating Radar (IWAGPR)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122597068","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
Time-lapse crosshole GPR full-waveform inversion to characterize flow and transport processes in aquifers 延时井间探地雷达全波形反演表征含水层流动和输运过程
2021 11th International Workshop on Advanced Ground Penetrating Radar (IWAGPR) Pub Date : 2021-12-01 DOI: 10.1109/iwagpr50767.2021.9843159
P. Haruzi, J. Schmäck, J. van der Kruk, H. Vereecken, J. Vanderborght, A. Klotzsche
{"title":"Time-lapse crosshole GPR full-waveform inversion to characterize flow and transport processes in aquifers","authors":"P. Haruzi, J. Schmäck, J. van der Kruk, H. Vereecken, J. Vanderborght, A. Klotzsche","doi":"10.1109/iwagpr50767.2021.9843159","DOIUrl":"https://doi.org/10.1109/iwagpr50767.2021.9843159","url":null,"abstract":"Time-domain crosshole GPR full-waveform inversion has proven to be a powerful tool to characterize the subsurface and aquifers with a high resolution. The full-waveform inversion is able to provide both the relative permittivity and the electrical conductivity of the investigated medium and is therefore able to improve subsurface characterization. Until now, most of the studies have been performed in a steady state and correlations to flow and transport processes have been difficult. In this study, we investigate how the crosshole GPR FWI can be used to map and quantify different tracers in a gravel aquifer, that not only affect the permittivity of the subsurface, but also the electrical conductivity. Thereby, our main focus is to investigate the effect of a salt tracer using a realistic aquifer transport model. Synthetic time-lapse GPR data are used to analyze different full-waveform inversions and starting model strategies to find the method that reconstructs the tracer movement best. First experimental data using a positive salt tracer are investigated with a focus on the effective source wavelet estimation and optimization of the time-lapse full-waveform inversion results. First results show indicators for preferential flow paths and that most of the tracer travels faster at the bottom of the aquifer, while in the upper part a slow movement could be observed.","PeriodicalId":170169,"journal":{"name":"2021 11th International Workshop on Advanced Ground Penetrating Radar (IWAGPR)","volume":"516 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131688620","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
Background clutter analysis of GPR signal for sedimentary deposit in Urban Infrastructure 城市基础设施中沉积物GPR信号背景杂波分析
2021 11th International Workshop on Advanced Ground Penetrating Radar (IWAGPR) Pub Date : 2021-12-01 DOI: 10.1109/iwagpr50767.2021.9843146
Mezgeen A. Rasol, V. Pérez-Gracia, S. Santos-Assunçao, Franziska Schmidt
{"title":"Background clutter analysis of GPR signal for sedimentary deposit in Urban Infrastructure","authors":"Mezgeen A. Rasol, V. Pérez-Gracia, S. Santos-Assunçao, Franziska Schmidt","doi":"10.1109/iwagpr50767.2021.9843146","DOIUrl":"https://doi.org/10.1109/iwagpr50767.2021.9843146","url":null,"abstract":"Soil site studies are crucial in the analysis of seismic hazard in populated areas. Enhancing the analysis of local seismic behaviour studies is based on the understanding of changes in ground materials of the shallow geology. Ground Penetrating Radar (GPR) is used in this study as a non-destructive geophysical method to understand the characterisation of changes in ground material in the sedimentary deposit due seasonal changes of water content in shallow geology of Sant Pau urban area in Barcelona city. The general objective of this research study is focused on enhancing the local seismic soil site analysis. This study employs GPR images to explore changes in the ground materials that can be associated to changes on the seismic soil response. Research procedure is based on real radar images acquired using 25 MHz centre frequency antenna along two different direction (parallel and perpendicular) of the coastline of the Mediterranean Sea of Barcelona city.Radar images are processed using common post-processing techniques, followed by more specific innovative post-processing methodology to support radar images as a complementary approach. A novel comparative study based on Fast Fourier Transform (FFT) is proposed to investigate the background clutter analysis of GPR signal considering background amplitude and centre of frequency to analyse water content in sedimentary deposit. This approach is developed to enhance the quality of GPR images to detect changes in ground materials by an innovative methodology of the radar data processing. The obtained results are mapped and compared to the information based on historical maps.","PeriodicalId":170169,"journal":{"name":"2021 11th International Workshop on Advanced Ground Penetrating Radar (IWAGPR)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130975668","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
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