2012 14th International Conference on Ground Penetrating Radar (GPR)最新文献_第8页

Vehicle GPR in the maintenance of the high-speed railway 车辆探地雷达在高速铁路维修中的应用

2012 14th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2012-06-04 DOI: 10.1109/ICGPR.2012.6254840

Jie Liu, Qian-li Zhang

引用次数: 0

ATRAS — An automated GPR system for data acquisition and storage for roads and bridges ATRAS -用于道路和桥梁数据采集和存储的自动GPR系统

2012 14th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2012-06-04 DOI: 10.1109/ICGPR.2012.6254907

J. Hugenschmidt, P. Furholz

引用次数: 8

Software defined radar: An open source platform for prototype GPR development 软件定义雷达:用于GPR原型开发的开源平台

2012 14th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2012-06-04 DOI: 10.1109/ICGPR.2012.6254855

J. Ralston, C. Hargrave

{"title":"Software defined radar: An open source platform for prototype GPR development","authors":"J. Ralston, C. Hargrave","doi":"10.1109/ICGPR.2012.6254855","DOIUrl":"https://doi.org/10.1109/ICGPR.2012.6254855","url":null,"abstract":"This discussion paper explores the potential of Software Defined Radio (SDR) technology to provide flexible and low-cost subsurface radar prototypes for the GPR community. Unlike traditional fixed hardware implementations, SDR uses software configurable RF modules which can be used to implement customized signal encoding, decoding and processing. However, the full potential of SDR has not yet been fully understood or exploited for radar-based applications, and so is of special interest for GPR development. This paper introduces the fundamental concepts behind SDRs and describes the underlying hardware and software architectures that are used to implement them. It also provides a simple reference design using open source GNU Radio software and the Universal Software Radio Peripheral (USRP) hardware to indicate how low-cost radar configurations can be designed and evaluated. The benefits and challenges of SDR-based radar architectures are highlighted, and opportunities discussed for new and enhanced subsurface sensing capabilities. Overall, SDR technology is seen to provide new opportunities to boost future radar research and development to provide enhanced GPR system capabilities.","PeriodicalId":443640,"journal":{"name":"2012 14th International Conference on Ground Penetrating Radar (GPR)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115638043","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: 29

GPR velocity and amplitude analyses to characterize the stratigraphy and estimate the ice density: An example from the Eastern Glacier of Mt. Canin (Alpine Chain, Italy) 用探地雷达速度和振幅分析表征地层学特征和估算冰密度:以意大利高山链Canin山东部冰川为例

2012 14th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2012-06-04 DOI: 10.1109/ICGPR.2012.6254942

E. Forte, M. Pipan, R. Colucci

{"title":"GPR velocity and amplitude analyses to characterize the stratigraphy and estimate the ice density: An example from the Eastern Glacier of Mt. Canin (Alpine Chain, Italy)","authors":"E. Forte, M. Pipan, R. Colucci","doi":"10.1109/ICGPR.2012.6254942","DOIUrl":"https://doi.org/10.1109/ICGPR.2012.6254942","url":null,"abstract":"We propose a methodology to estimate the density of frozen media (snow, firn and ice) using common offset GPR data. The technique bases on reflection amplitude analysis to calculate the series of reflection coefficients. The latter is used to estimate the electrical permittivity (dielectric constant) of each level. Applying one of the empirical equations available from the literature is possible to determine the vertical density variations for all the acquired GPR traces and therefore infer the nature of frozen materials (from fresh snow, to granular snow, firn and ice) and to estimate the Snow Water Equivalent (SWE), which is an essential parameter to determine the actual water volume within a certain frozen body. The proposed technique was tested in the Eastern Glacier of Mt. Canin (Eastern Alps) and validated by direct snow density measures, obtained using samples collected from manually dug snow pits, and with data from the literature. Despite the necessary approximations, the average value of density for different levels is calculated with acceptable accuracy. Moreover, this analysis can help to find and locate debris/moraines embedded within the ice bodies.","PeriodicalId":443640,"journal":{"name":"2012 14th International Conference on Ground Penetrating Radar (GPR)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114496660","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 new algorithm for through wall human respiration monioring using GPR 探地雷达穿壁人体呼吸监测新算法

2012 14th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2012-06-04 DOI: 10.1109/ICGPR.2012.6254999

Wenzhe Li, X. Jing, Zhao Li, Jianqi Wang

引用次数: 6

Decomposing GPR images in a variation approach 变分法分解探地雷达图像

2012 14th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2012-06-04 DOI: 10.1109/ICGPR.2012.6254826

Yishuo Huang, Shang-Yuh Lin, Jie-Chun Yang, Shengmin Wu

引用次数: 3

Multi-parameter spectral inversion for GPR signals of subsurface layered media 地下层状介质GPR信号的多参数谱反演

2012 14th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2012-06-04 DOI: 10.1109/ICGPR.2012.6254873

Huang Zhonglai, Zhang Jianzhong

{"title":"Multi-parameter spectral inversion for GPR signals of subsurface layered media","authors":"Huang Zhonglai, Zhang Jianzhong","doi":"10.1109/ICGPR.2012.6254873","DOIUrl":"https://doi.org/10.1109/ICGPR.2012.6254873","url":null,"abstract":"A frequency-domain spectral inversion algorithm is derived and verified in this paper, using which underground reflective surfaces' positions as well as each layer's thickness, dielectric permittivity and electric conductivity can be obtained simultaneously. Generalized reflection coefficients are first defined according to the transmission pattern of electromagnetic (EM) wave in subsurface layered media. With a three-layer model considered, the coefficients of each reflective surface are decomposed into even and odd component. Before inversion is carried out, a cost function is established to connect spectral of reflection coefficients and layer's parameters. Only with correct parameters, can the spectral be rightly synthesized and the cost function will be minimized. In order to solve this non-linear optimization problem, a modified Stochastic Hill-climbing Algorithm (SHA) is applied. Since more reliable initial parameter vector can greatly improve inversion efficiency and result accuracy, new strategies are adopted to decide the first vector. The first parameters are calculated step by step according to their different effects on coefficients spectral. Only part of the parameters is involved during each step, which makes the procedure very fast. The algorithm is applied on simulated data of a wedge model first, whose result suggests that accurate parameters can still be expected when thickness of the layer is less than tuning thickness and iteration times are also greatly reduced compared with that of inversion using initial vector with random parameters. At the end, a set of data coming from a highway GPR detection are used to test the algorithm and the result is also promising.","PeriodicalId":443640,"journal":{"name":"2012 14th International Conference on Ground Penetrating Radar (GPR)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126814436","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

Non-destructive evaluation of shield tunnel condition using GPR and 3D laser scanning 利用探地雷达和三维激光扫描对盾构隧道状态进行无损评价

2012 14th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2012-06-04 DOI: 10.1109/ICGPR.2012.6254913

Xiongyao Xie, Chenchao Zeng

引用次数: 13

Time-frequency dependent filtering of step-frequency ground penetrating radar data 步进频率探地雷达数据的时频相关滤波

2012 14th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2012-06-04 DOI: 10.1109/ICGPR.2012.6254904

J. Sala, H. Penne, E. Eide

引用次数: 8

Comparing traffic speed deflectometer and noise-modulated ground penetrating radar data for rapid road pavement investigations 比较交通速度偏转仪和噪声调制探地雷达的快速路面调查数据

2012 14th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2012-06-04 DOI: 10.1109/ICGPR.2012.6254917

W. Muller, B. Reeves

{"title":"Comparing traffic speed deflectometer and noise-modulated ground penetrating radar data for rapid road pavement investigations","authors":"W. Muller, B. Reeves","doi":"10.1109/ICGPR.2012.6254917","DOIUrl":"https://doi.org/10.1109/ICGPR.2012.6254917","url":null,"abstract":"The measurement of deflection under load is fundamental to the assessment of road pavement strength. Many authors have described the benefits of using GPR data to enhance assessment of deflection measurements made by devices such as the Falling Weight Deflectometer (FWD). However while GPR investigations can be undertaken quickly, FWD and other existing deflection methods are much slower which in turn limits productivity. This paper describes a 2010 field trial comparing data from two highway speed road measurement devices: the Danish made Traffic Speed Deflectometer (TSD) and the Australian made 3-D noise modulated ground penetrating radar (NM-GPR) system used in the `Roadscout' vehicle. Around 350 lane-kilometers of data from these devices were compared, showing a clear correlation. The methods were found to be particularly useful when used in combination - the TSD indicating where the pavement was weak, strong or variable and the GPR providing additional information to indicate why. In many cases changes in the data from both methods coincided, providing a direct indication of the cause of the change. In other instances either the TSD or GPR varied and the other method did not, indicating a different type of cause. It quickly became clear that the methods were complementary, providing two independent measurements of pavement response on which to assess current conditions. Overall the correlation between the NM-GPR and TSD data from this trial indicates great promise for using these methods in combination in the future. These methods provide key data needed to achieve rapid, large scale road pavement investigations, collected without public disruption at highway speeds.","PeriodicalId":443640,"journal":{"name":"2012 14th International Conference on Ground Penetrating Radar (GPR)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114980645","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