2012 14th International Conference on Ground Penetrating Radar (GPR)最新文献_第9页

Wideband antenna array for step-frequency ground penetrating radar 用于步进频率探地雷达的宽带天线阵列

2012 14th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2012-06-04 DOI: 10.1109/ICGPR.2012.6254851

E. Eide, T. Kiessling, J. Typpo

{"title":"Wideband antenna array for step-frequency ground penetrating radar","authors":"E. Eide, T. Kiessling, J. Typpo","doi":"10.1109/ICGPR.2012.6254851","DOIUrl":"https://doi.org/10.1109/ICGPR.2012.6254851","url":null,"abstract":"This work investigates the properties of a novel wideband air-launched antenna array for high speed 3-dimensional GPR surveys. It consists of boomerang-shaped monopole antenna elements mounted on a layer of microwave absorbing material, backed by a ground plane. The antenna element provides a very flat frequency response ranging from 200 MHz to 3 GHz. This allows us to take full advantage of the step-frequency radar's property of covering a wide frequency range without switching between different frequency band antennas. The transmitting and receiving elements are arranged on a V-shaped structure where the tip of the V is pointing towards the ground. This structure gives high isolation between the transmitter and receiver and suppresses the multiple reflections between antenna and ground surface. The antenna was studied both numerically and experimentally to characterize the electromagnetic behavior. The main design objective was to maximize the radiation in the downward direction while minimizing the coupling between the transmitter and receiver. Based on these studies, more than 40 dB of isolation between transmitting and receiving antenna has been obtained. Furthermore, the flat frequency response ensures a clean impulse response with low ringing which is very important when measuring thin pavement layers. The paper also presents field measurement results from a high-speed road survey.","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":"126025181","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

Numerical simulations and analysis for airborne ground penetrating radar 机载探地雷达的数值模拟与分析

2012 14th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2012-06-04 DOI: 10.1109/ICGPR.2012.6254860

L. Fu, Sixin Liu, Lanbo Liu

{"title":"Numerical simulations and analysis for airborne ground penetrating radar","authors":"L. Fu, Sixin Liu, Lanbo Liu","doi":"10.1109/ICGPR.2012.6254860","DOIUrl":"https://doi.org/10.1109/ICGPR.2012.6254860","url":null,"abstract":"We conduct numerical simulations for an airborne ground penetrating radar (GPR) to investigate its performance in different situations such as antenna configuration and ground surface roughness with 3-dimensional (3D) finite-difference timedomain (FDTD) method. The bow-tie antennas are used in the simulations. Gaussian random rough surface is used to simulate ground surface and underground interfaces. We have investigated four antenna configurations (FBx, FBy, LRx, and LRy) in line with the configuration of airborne GPR survey, and analyzed correspondent simulated profiling results. It is concluded that LRx is the most optimal way for 3D experiments. Antenna height is an important factor in airborne GPR survey. As the antenna height increases, the reflected energies from both underground interfaces and the ground surface decrease, but the ratio between them increases. The roughness of the ground surface affects the duration of the coda waves resulted from surface reflection. The detection of underground features heavily depends on the separation of the signature of rough surface and the targets in radar profile. It is concluded that airborne GPR is a potential and optimistic tool from the numerical experiments.","PeriodicalId":443640,"journal":{"name":"2012 14th International Conference on Ground Penetrating Radar (GPR)","volume":"34 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":"126103856","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

Development of a micro-strip resonator soil moisture sensor 微带谐振式土壤水分传感器的研制

2012 14th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2012-06-04 DOI: 10.1109/ICGPR.2012.6254947

Chen Guo, R. C. Liu

引用次数: 2

Soil moisture estimation using full-wave inversion of near- and far-field ground-penetrating radar data: A comparative evaluation 利用近场和远场探地雷达数据全波反演估算土壤水分:比较评价

2012 14th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2012-06-04 DOI: 10.1109/ICGPR.2012.6254877

A. Tran, F. Wiaux, S. Lambot

{"title":"Soil moisture estimation using full-wave inversion of near- and far-field ground-penetrating radar data: A comparative evaluation","authors":"A. Tran, F. Wiaux, S. Lambot","doi":"10.1109/ICGPR.2012.6254877","DOIUrl":"https://doi.org/10.1109/ICGPR.2012.6254877","url":null,"abstract":"A new near-field ground-penetrating antenna model was applied for characterization of soil moisture in an agricultural transect in central Belgium. The measurement system consists of a vector network analyzer connected with a horn antenna and a differential GPS mounted on a motorcycle for quick data acquisition. Numerical experiments show that near-field GPR data are more sensitive to the soil dielectric properties than far-field data due to nearer distance between the antenna and medium. For the field measurements, the modeled GPR data from far-field and near-field configurations agree very well with the measured ones. However, soil water content estimated from near-field data is higher and more in agreement with Theta Probe measurements than far-field owning to the deeper penetration depth, smaller foot print and larger sensitivity with soil permittivity of near-field data. The results also show that the spatial pattern of the soil moisture is mainly controlled by the topography, while temporal variability is influenced by the rainfall intensity and time lag between rainfall event and experiment. The proposed approach shows a promising potential for temporal and spatial characterization of soil moisture at the field scale.","PeriodicalId":443640,"journal":{"name":"2012 14th International Conference on Ground Penetrating Radar (GPR)","volume":"251 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":"127539662","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

UWB in-situ soil permittivity probe with a novel iterative permittivity calibration method 超宽带原位土壤介电常数探针与新的迭代校准方法

2012 14th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2012-06-04 DOI: 10.1109/ICGPR.2012.6254841

Ming Chen, Chi-Chih Chen

引用次数: 5

Environmental geological applications of ground penetrating radar 探地雷达在环境地质中的应用

2012 14th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2012-06-04 DOI: 10.1109/ICGPR.2012.6254967

Hongjun Guan, Xin-rong Ye, Shuming Wang, Z. Deng

{"title":"Environmental geological applications of ground penetrating radar","authors":"Hongjun Guan, Xin-rong Ye, Shuming Wang, Z. Deng","doi":"10.1109/ICGPR.2012.6254967","DOIUrl":"https://doi.org/10.1109/ICGPR.2012.6254967","url":null,"abstract":"This paper introduces the combining application of GPR and high density resistivity method, that achieved good detecting effect of engineering geophysical exploration on island frozen soil, karst cave, subgrade collapsing, landslide hazard and so on. The two differences of the dielectric constant and the resistivity are prevalent in environmental geology and engineering geology, but also has high correlation. The ambiguity can be effectively eliminated from two ways describing the underground target. GPR can describe the shallow characterization with details and features, the high density resistivity method can describe the deep macroscopic characteristics for the underground target, so easy to form conceptual geological model and to convenient for data analysis and data interpretation. The combining is effective that have complementarity, validation and validity for each other. The detecting parameters of GPR is more important than the data processing, which determines the quality of original data, It is necessary to do a certain amount of field test for determine the detection parameters before you start work especially in a strange area.","PeriodicalId":443640,"journal":{"name":"2012 14th International Conference on Ground Penetrating Radar (GPR)","volume":"9 2 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":"130813921","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

Investigation of voids and cavities in bored tunnels using GPR 利用探地雷达对钻孔隧道的空洞和空腔进行研究

2012 14th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2012-06-04 DOI: 10.1109/ICGPR.2012.6254916

J. Karlovšek, A. Scheuermann, D. J. Willimas

引用次数: 24

Sidelobe suppression technique for SFCW GPR using the sparsity property of the received signal 利用接收信号的稀疏性抑制SFCW探地雷达旁瓣

2012 14th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2012-06-04 DOI: 10.1109/ICGPR.2012.6254886

L. Qu, Tianhong Yang, Xuan Li, Pingping Huang

引用次数: 0

Investigation of sinkholes on the roads by GPR: Application to HCM city, Vietnam 探地雷达对道路地陷的调查:在越南胡志明市的应用

2012 14th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2012-06-04 DOI: 10.1109/ICGPR.2012.6254906

N. Giảng, J. Jarzyna, Nguyen Thanh Van, J. Ziętek, Dang Hoai Trung, T. S. Suchon

{"title":"Investigation of sinkholes on the roads by GPR: Application to HCM city, Vietnam","authors":"N. Giảng, J. Jarzyna, Nguyen Thanh Van, J. Ziętek, Dang Hoai Trung, T. S. Suchon","doi":"10.1109/ICGPR.2012.6254906","DOIUrl":"https://doi.org/10.1109/ICGPR.2012.6254906","url":null,"abstract":"HCM city is the largest city in Vietnam with about 3,000 km of transport roads for 8 min people. There were many sinkholes appeared on the roads during the period of 2009-2010 years of different diameter. The location of those sinkholes is required to be done to forecast safety transportation in future for. We proposed to use GPR technique for location of these sinkholes in the city by Ramac X3M with 500 MHz frequency equipment and other for deeper target for instance Pulse Ekko100A with 200 and 100 MHz frequency antennas. The majority of anomalies was found by GPR measurements related with subsurface holes or soft-material by 0.5-2 m of diameter and 0.5-4 m of depth. In this paper, we present result of processing and interpreting GPR data for 3-D image for location of 3 sinkholes on the road in the city by using network of 16 × 17 GPR lines measurement. To obtain accurate parameters of GPR anomaly by data processing, we used CMP configuration for estimation of the velocity in-site. The GPR images reveal the distribution of the sinkholes and other weakness zone by comparing with dug holes.","PeriodicalId":443640,"journal":{"name":"2012 14th International Conference on Ground Penetrating Radar (GPR)","volume":"7 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":"125486712","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 multidisciplinary non-destructive approach to analyze moisture in historic masonry structures: Integration of both field and synthetic GPR data generated from photogrammetric and infrared imaging 一种多学科的非破坏性方法来分析历史砌体结构中的水分:由摄影测量和红外成像产生的现场和合成GPR数据的集成

2012 14th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2012-06-04 DOI: 10.1109/ICGPR.2012.6254931

M. Solla, S. Laguela, M. Álvarez, H. Lorenzo, B. Riveiro

引用次数: 1