2017 9th International Workshop on Advanced Ground Penetrating Radar (IWAGPR)最新文献

Road foundation detailing using ground penetrating radar systems with different frequencies 使用不同频率的探地雷达系统详细描述道路基础

2017 9th International Workshop on Advanced Ground Penetrating Radar (IWAGPR) Pub Date : 2017-07-31 DOI: 10.1109/IWAGPR.2017.7996096

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

{"title":"Road foundation detailing using ground penetrating radar systems with different frequencies","authors":"A. Alani, F. Tosti, L. B. Ciampoli, F. Benedetto","doi":"10.1109/IWAGPR.2017.7996096","DOIUrl":"https://doi.org/10.1109/IWAGPR.2017.7996096","url":null,"abstract":"This paper reports on the assessment of the underground construction details of a road pavement using different frequency ground penetrating radar (GPR) antenna systems. In addition to this, the possible presence and location of an underground watercourse was investigated in this work. The existence of the latter problem was perceived due to reoccurrence of longitudinal and traversal road surface cracking as well as subsidence at a particular section of the road. Reoccurrence of this damage was interpreted and related to the possible existence of an underground watercourse. The original design and the construction of the road were as such to prevent this movement. Therefore it seemed necessary to perform a GPR survey to investigate and confirm the underground construction details of the road. To this purpose, the identified area was surveyed using high to low frequency antennas with 2000 MHz, 900 MHz, 600 MHz and 200 MHz central frequencies of investigation. The results were conclusive in terms of construction details provided and evidence of subsidence within the road identified. The maximum depth of penetration achieved by the use of the 600 MHz and the 200 MHz antennas (maximum of 3 m) did not allow to identify or confirm the existence of any underground watercourse.","PeriodicalId":216764,"journal":{"name":"2017 9th International Workshop on Advanced Ground Penetrating Radar (IWAGPR)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127421931","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

Preliminary results on multi offset GPR for imaging of landmines 多偏距探地雷达成像的初步结果

2017 9th International Workshop on Advanced Ground Penetrating Radar (IWAGPR) Pub Date : 2017-07-31 DOI: 10.1109/IWAGPR.2017.7996090

F. Lombardi, H. Griffiths, A. Balleri, M. Lualdi

引用次数: 1

Electromagnetic Marchenko scheme based internal multiple elimination for lossless media 基于电磁Marchenko方案的无损介质内多重消去

2017 9th International Workshop on Advanced Ground Penetrating Radar (IWAGPR) Pub Date : 2017-07-28 DOI: 10.1109/IWAGPR.2017.7996060

Lele Zhang, E. Slob

引用次数: 1

Comparing the measured and modelled response of bespoke antennas using gprMax 比较使用gprMax的定制天线的测量和模拟响应

2017 9th International Workshop on Advanced Ground Penetrating Radar (IWAGPR) Pub Date : 2017-06-28 DOI: 10.1109/IWAGPR.2017.7996050

J. Wilkinson, N. Davidson

引用次数: 1

Application of Ground penetrating radar for investigating sediment-filled surface karst features (Krk Island, Croatia) 探地雷达在地表填沙地貌调查中的应用(克罗地亚Krk岛)

2017 9th International Workshop on Advanced Ground Penetrating Radar (IWAGPR) Pub Date : 2017-06-28 DOI: 10.1109/IWAGPR.2017.7996045

Teja Ceru, A. Gosar, Ela Segina

{"title":"Application of Ground penetrating radar for investigating sediment-filled surface karst features (Krk Island, Croatia)","authors":"Teja Ceru, A. Gosar, Ela Segina","doi":"10.1109/IWAGPR.2017.7996045","DOIUrl":"https://doi.org/10.1109/IWAGPR.2017.7996045","url":null,"abstract":"Ground penetrating radar (GPR) has been widely used in the last decade for investigating various issues in karst environments. Valley-like depressions and other sediment-filled irregular features on karst surface in the south-eastern part of Krk Island, Croatia, were noticed but their genetic mechanism could not be clarified only by geomorphological field observations and the analysis of orthophoto images. It was unclear which processes (surface and/or underground) prevailed during the formation of the investigated surface features, so the GPR method was used to study different karst features and their interconnections. To test the applicability of the GPR method for detecting such features, two different antennae, a 250 MHz shielded and a 50 MHz unshielded Rough Terrain Antenna (RTA), were applied to estimate the suitability of various frequencies in certain karst environments. On the basis of additional information obtained from GPR data, it become clear that the studied sediment-filled surface karst features are result of the denudation processes. Furthermore, linkages between surface sediment-filled features also became apparent, which prove the existence of an unroofed cave. The linkages are expressed as areas with stronger attenuation on GPR radargrams due to different electromagnetic properties of the sediments that fill up denuded structures and the mainly bare karst surface that surrounds them. These findings indicate that the investigated sediment-filled surface features of various shapes and sizes belong to one former underground cave system which is now exposed on the recent surface as a result of denudation.","PeriodicalId":216764,"journal":{"name":"2017 9th International Workshop on Advanced Ground Penetrating Radar (IWAGPR)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114403227","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

Diagnosis of reinforced concrete structures by Ground Penetrating Radar survey - case study 探地雷达测量对钢筋混凝土结构诊断的实例研究

2017 9th International Workshop on Advanced Ground Penetrating Radar (IWAGPR) Pub Date : 2017-06-28 DOI: 10.1109/IWAGPR.2017.7996058

J. Sham, W. L. L. Wallace

引用次数: 6

Automated data extraction from synthetic and real radargrams of district heating pipelines 区域供热管道合成图和真实图的自动数据提取

2017 9th International Workshop on Advanced Ground Penetrating Radar (IWAGPR) Pub Date : 2017-06-28 DOI: 10.1109/IWAGPR.2017.7996046

A. Ristic, M. Vrtunski, M. Govedarica, L. Pajewski, Xavier Dérobert

引用次数: 12

A physical modeling study to analyze the horizontal resolution limits of GPR reflection imaging 探地雷达反射成像水平分辨率极限的物理模拟研究

2017 9th International Workshop on Advanced Ground Penetrating Radar (IWAGPR) Pub Date : 2017-06-28 DOI: 10.1109/IWAGPR.2017.7996036

Franz Sandring, N. Allroggen, J. Tronicke

{"title":"A physical modeling study to analyze the horizontal resolution limits of GPR reflection imaging","authors":"Franz Sandring, N. Allroggen, J. Tronicke","doi":"10.1109/IWAGPR.2017.7996036","DOIUrl":"https://doi.org/10.1109/IWAGPR.2017.7996036","url":null,"abstract":"Physical modeling studies at the laboratory scale close the gap between computer simulations and field experiments. In ground-penetrating radar (GPR), such physical models are, for example, useful to study wave propagation phenomena, to evaluate mathematical models, and to develop tools for data analysis, processing, and interpretation. Here, we present an experiment, which has been designed to study the resolution capabilities of GPR. Our model consists of well-defined targets (styrofoam and metallic objects) located in a homogenous background medium (water-filled tank). Collecting 2D/3D GPR data using 1 GHz antennas across this model, allows us to analyze real-world data sets (e.g., in terms of waveforms and noise characteristics) and to evaluate basic theoretical concepts as they are known from the literature to specify the resolution limits of GPR. Here, we focus on the analysis of horizontal resolution and compare our results (i.e., unmigrated and migrated data) to basic Fresnel zone concepts. Our results demonstrate the principal applicability of these concepts to estimate the resolution limits of GPR data. Furthermore, they illustrate that a proper migration scheme is essential to obtain a well focused GPR with optimal resolution capabilities, which we estimate to be in the order of half of a dominant wavelength.","PeriodicalId":216764,"journal":{"name":"2017 9th International Workshop on Advanced Ground Penetrating Radar (IWAGPR)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114685370","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

GPR attribute analysis for material property identification GPR属性分析用于材料性能识别

2017 9th International Workshop on Advanced Ground Penetrating Radar (IWAGPR) Pub Date : 2017-06-28 DOI: 10.1109/IWAGPR.2017.7996070

Isabel M. Morris, B. Glisic

{"title":"GPR attribute analysis for material property identification","authors":"Isabel M. Morris, B. Glisic","doi":"10.1109/IWAGPR.2017.7996070","DOIUrl":"https://doi.org/10.1109/IWAGPR.2017.7996070","url":null,"abstract":"Conservation of priceless cultural heritage is a pressing shared responsibility primarily assigned to archaeologists and materials scientists. Ironically, standard methods used to determine mechanical and material properties in these fields are actually destructive. Consequently, valuable non-destructive prospection methods, especially Ground Penetrating Radar (GPR), have been embraced and expanded by conservators in an attempt to determine these physical properties. Attribute analysis is sometimes conducted in addition to standard GPR post-processing for feature detection and to extract and clarify information about a site. However, attribute analysis has not been applied to consider subtle differences between materials. This work aims to empirically explore the relationships between materials and their GPR attributes by surveying 8 concrete and cement paste cores of variable mechanical properties and 2 bricks and calculating a variety of amplitude based attributes. The outcomes of this work are preliminary indications of relative properties and classifications of attributes better equipped for certain properties. These results are promising for continued study of additional classes of attributes to ensure successful conservation efforts.","PeriodicalId":216764,"journal":{"name":"2017 9th International Workshop on Advanced Ground Penetrating Radar (IWAGPR)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130133573","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: 3

A simple analysis of dipole antenna radiation above a multilayered medium 多层介质上偶极子天线辐射的简单分析

2017 9th International Workshop on Advanced Ground Penetrating Radar (IWAGPR) Pub Date : 2017-06-28 DOI: 10.1109/IWAGPR.2017.7996037

D. Poljak, V. Doric, M. Birkic, K. El Khamlichi Drissi, S. Lalléchère, L. Pajewski

引用次数: 9