2016 16th International Conference on Ground Penetrating Radar (GPR)最新文献_第5页

The application of long-range GPR for seismic static corrections 远程探地雷达在地震静校正中的应用

2016 16th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2016-06-13 DOI: 10.1109/ICGPR.2016.7572656

J. Francke

{"title":"The application of long-range GPR for seismic static corrections","authors":"J. Francke","doi":"10.1109/ICGPR.2016.7572656","DOIUrl":"https://doi.org/10.1109/ICGPR.2016.7572656","url":null,"abstract":"A particularly challenging parameter for petroleum exploration in aeolian desert environments is the thickness of the low velocity layer (LVL), which can vary laterally due to numerous reasons, including variations in weathering depths or the presence of palaeochannels. Traditional methods of mapping the LVL, such as uphole seismic surveys, offer precise depth information but at disparate points. Although these environments are commonly classified as hyper-arid, the imaging depth requirement for these seismic static corrections is well beyond that of commercial GPR instruments. It is also known that the interdune corridors consist of electrically-conductive evaporate calcrete layers, which commonly extend beneath dunes. However, it may be possible to construct a powerful low-frequency radar which could penetrate the required depths, given ideal conditions. Herein are presented examples of a series of test surveys from the Sahara Desert with two real-time sampling radar systems, centred at 25 MHz and 10 MHz, designed to penetrate as deep as possible into aeolian environments to image seismic static correction depths. These preliminary results suggest that, if the correct environment is selected, long-range GPR can offer some insights into LVL geometries.","PeriodicalId":187048,"journal":{"name":"2016 16th International Conference on Ground Penetrating Radar (GPR)","volume":"31 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":"134089729","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

The subsurface penetrating radar on the rover of China's Mars 2020 mission 中国“火星2020”探测器上的地下穿透雷达

2016 16th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2016-06-13 DOI: 10.1109/ICGPR.2016.7572700

B. Zhou, S. Shen, Y. C. Ji, W. Lu, F. Zhang, G. Fang, Y. Su, S. Dai

引用次数: 20

Self-calibrated boundary detection algorithm for horizon control in long-wall mining 长壁开采水平控制的自标定边界检测算法

2016 16th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2016-06-13 DOI: 10.1109/ICGPR.2016.7572623

J. Che, C. C. Chen, L. Stolarczyk

引用次数: 0

GPR based real-time obstacle detection system for horizontal directional drilling 基于探地雷达的水平定向钻井实时障碍物检测系统

2016 16th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2016-06-13 DOI: 10.1109/ICGPR.2016.7572647

D. Pasculli, G. Manacorda, D. Morandi, M. Hamers, T. Schauerte, D. Dei, H. Scott, M. Morey

{"title":"GPR based real-time obstacle detection system for horizontal directional drilling","authors":"D. Pasculli, G. Manacorda, D. Morandi, M. Hamers, T. Schauerte, D. Dei, H. Scott, M. Morey","doi":"10.1109/ICGPR.2016.7572647","DOIUrl":"https://doi.org/10.1109/ICGPR.2016.7572647","url":null,"abstract":"The paper describes the testing of an obstacle-detection radar installed on the steerable head of a Horizontal Directional Drilling (HDD) equipment; the system was developed during the ORFEUS (Operational Radar For Every drill string Under the Street) project co-funded by the European Commission under the 7th Framework programme. HDD is a trenchless method of installing pipes and cables of various sizes, which minimizes disturbance to traffic and people living nearby. The innovative ground probing radar (GPR) based real-time obstacle detection prototype system increases the safety margins of HDD to allow its use in the widest possible range of conditions, providing indications of obstructions in the drill path so that they may be avoided. The radar is implemented using equivalent time sampling technology and integrates transmitting and receiving UWB antennas, hosted within the bore head, with beams angled forwards to provide ahead and side looking capabilities. Depending on soil conditions, it can detect obstacles at ranges further than 50 centimeters in front of and around the bore head. The radar imaging data are transmitted, in real-time, along the drill string to the surface. The hardware development consisted of the antenna design and directional sensing using 3 axes electronic gyroscope, and a communications system utilizing spread spectrum technology. A data collection and processing software suite was developed that is capable of producing a 3-D imaging output easily interpretable by the user. The sensor system was successfully demonstrated in three real operational trials, where surveys were completed resulting in the laying of new pipes and cables. Also, a power cable which was not reported in the maps was detected by the radar, so the system was halted, thus avoiding striking the object.","PeriodicalId":187048,"journal":{"name":"2016 16th International Conference on Ground Penetrating Radar (GPR)","volume":"81 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":"123661896","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 comparison of finite-difference, finite-integration, and integral-equation methods in the time-domain for modelling ground penetrating radar antennas 时域有限差分、有限积分和积分方程方法在探地雷达天线建模中的比较

2016 16th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2016-06-13 DOI: 10.1109/ICGPR.2016.7572676

C. Warren, L. Pajewski, D. Poljak, A. Ventura, A. Giannopoulos, S. Šesnić

{"title":"A comparison of finite-difference, finite-integration, and integral-equation methods in the time-domain for modelling ground penetrating radar antennas","authors":"C. Warren, L. Pajewski, D. Poljak, A. Ventura, A. Giannopoulos, S. Šesnić","doi":"10.1109/ICGPR.2016.7572676","DOIUrl":"https://doi.org/10.1109/ICGPR.2016.7572676","url":null,"abstract":"Development of accurate models of GPR antennas is being driven by research into more accurate simulation of amplitude and phase information, improved antenna designs, and better-performing forward simulations for inversion procedures. Models of a simple dipole antenna, as well as more complex models similar to a GSSI 1.5GHz antenna and a MALA Geo-science 1.2GHz antenna were investigated in free space and over lossless and lossy dielectric half-spaces. We present comparisons of simulated data using the Finite-Integration Technique, the Finite-Difference Time-Domain method, and a Time-Domain Integral Equation approach, as well as measured data. For each scenario, phase, amplitude, and the shape of the waveform were compared. Generally we found very good agreement between the different simulation techniques, and good agreement between experimental and simulated data. Differences that were evident highlight the significance of understanding how features such as antenna feeding and material dispersion are modelled. This degree of match between experimental and simulated data cannot be attained by using just an infinitesimal dipole model in a simulation - a model including the structure of the antenna is required. This is important for the many GPR applications which operate in the near-field of the antenna, where the interaction between the antenna, the ground, and targets is important.","PeriodicalId":187048,"journal":{"name":"2016 16th International Conference on Ground Penetrating Radar (GPR)","volume":"1 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":"129292688","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: 10

Long-term monitoring of two highway bridges using microwave interferometer-case studies 利用微波干涉仪对两座公路桥进行长期监测——案例研究

2016 16th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2016-06-13 DOI: 10.1109/ICGPR.2016.7572669

K. Hsu, Chia-Chi Cheng, C. Chiang

引用次数: 4

A comparison between different central frequencies of investigation in buried utility detection through GPR: A study case 探地雷达埋地公用事业探测中不同中心频率的比较研究

2016 16th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2016-06-13 DOI: 10.1109/ICGPR.2016.7572639

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

{"title":"A comparison between different central frequencies of investigation in buried utility detection through GPR: A study case","authors":"L. B. Ciampoli, A. Benedetto, L. Pajewski, A. Alani, F. Tosti","doi":"10.1109/ICGPR.2016.7572639","DOIUrl":"https://doi.org/10.1109/ICGPR.2016.7572639","url":null,"abstract":"Ground Penetrating Radar (GPR) has proved to provide a high reliability in detecting several subsurface features such as water and gas pipes, energy and telecommunication supplies, water reservoirs or air voids. The present work uses a comparison between different central frequencies of investigation to reconstruct the network of utilities located underneath a paved surface and to understand the best strategy of analysis to undertake. To this purpose, a 757 m2 paved carpark situated in London was used as test site and divided into three smaller areas. Central frequencies of investigation of 250 MHz, 400 MHz, 500 MHz, 1000 MHz, 2000 MHz, and 4000 MHz were selectively employed over these areas, and the outcomes from the 250 MHz, 500 MHz, and 1000 MHz are here analyzed. The analysis of the data has detected the presence of several utility lines with placements different from those represented within the design charts. Useful insights about the performances of different central frequencies of investigation are here discussed, as well as the usefulness of GPR in validating information collected by visual inspections and available from cartographic maps.","PeriodicalId":187048,"journal":{"name":"2016 16th International Conference on Ground Penetrating Radar (GPR)","volume":"170 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":"116009313","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 novel ellipse back-cavity and slot-tuned bow-tie antenna for ground penetrating radar 一种用于探地雷达的新型椭圆后腔槽调谐领结天线

2016 16th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2016-06-13 DOI: 10.1109/ICGPR.2016.7572602

Y. C. Wang, D. Yin, J. Liu, T. Kai, Z. Dong, S. Ye, Y. C. Ji, G. Fang, X. J. Zhang, X. L. Zhou, Z. Xue, T. Zhang, C. Wang

引用次数: 2

Passive cooperative targets for subsurface physical and chemical measurements 用于地下物理和化学测量的被动合作目标

2016 16th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2016-06-13 DOI: 10.1109/ICGPR.2016.7572619

J. Friedt

{"title":"Passive cooperative targets for subsurface physical and chemical measurements","authors":"J. Friedt","doi":"10.1109/ICGPR.2016.7572619","DOIUrl":"https://doi.org/10.1109/ICGPR.2016.7572619","url":null,"abstract":"We investigate the development of passive cooperative targets as sub-surface sensors interrogated by Ground Penetrating RADAR (GPR). Using piezoelectric substrates for converting the incoming electromagnetic pulse to an acoustic wave confined to the sensor surface (Surface Acoustic Wave transducer - SAW) allows for shrinking the sensor dimensions while providing sensing capability through the piezoelectric substrate acoustic wave velocity dependence with the physical quantity under investigation. Two broad ranges of sensing mechanisms are discussed: intrinsic piezoelectric substrate velocity dependence with a quantity - restricted to the measurement of temperature or strain and hence torque or pressure - and extrinsic load dependence on the sensor, allowing for the measurement of variable capacitive or resistive loads. We demonstrate, using readily available surface acoustic wave filters diverted from their original use to become reflective cooperative targets, how commercially available GPR hardware can be used, with minor software addition, to probe such sensors with no hindrance to the shallow subsurface structure detection capability by defining multiple time windows - some for sub-surface monitoring and others for sensing capability.","PeriodicalId":187048,"journal":{"name":"2016 16th International Conference on Ground Penetrating Radar (GPR)","volume":"14 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":"124855877","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

Crosshole radar for underground structure defect detection: System design and model experiment 井下结构缺陷井间雷达探测系统设计与模型试验

2016 16th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2016-06-13 DOI: 10.1109/ICGPR.2016.7572618

X. Xie, H. Qin, G. Hong, Y. Chen, K. Zeng

{"title":"Crosshole radar for underground structure defect detection: System design and model experiment","authors":"X. Xie, H. Qin, G. Hong, Y. Chen, K. Zeng","doi":"10.1109/ICGPR.2016.7572618","DOIUrl":"https://doi.org/10.1109/ICGPR.2016.7572618","url":null,"abstract":"This paper presents a crosshole radar system and its model experiment for underground structure's defect detection. The system was built using a vector network analyzer (VNA), cylinder dipole antennas, and a radio frequency (RF) amplifier. The VNA enables the radar to work in a stepped frequency mode. The antenna, which has a carefully designed diameter of 32 mm, is compatible with most boreholes in common underground structures and is tested to work in the frequency range from 210 MHz to 560 MHz. The RF amplifier, set up at the output port of the VNA, amplifies radar signals by approximated 20 dB in the working frequency band. This system is tested by a reinforced concrete underground structure (diaphragm wall) model experiment, in which embedded defects are detected by the crosshole radar through two adjacent preset boreholes. MOG data were recorded and processed by a first-arrival travel time tomography method. The defective areas were reconstructed correctly from the inversion result, which validates the capability of the crosshole radar system and this method for underground structure defect detection.","PeriodicalId":187048,"journal":{"name":"2016 16th International Conference on Ground Penetrating Radar (GPR)","volume":"66 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":"123349495","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