2012 14th International Conference on Ground Penetrating Radar (GPR)最新文献

Multi-frequency antennas to depict the multi-layer foundation of a building 多频天线描绘建筑物的多层基础

2012 14th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2012-08-02 DOI: 10.1109/ICGPR.2012.6254961

L. Orlando

引用次数: 0

Distortion of pulse signatures penetrated obliquely through tunnel in a cross-borehole pulse radar 跨井脉冲雷达斜穿隧道脉冲信号畸变

2012 14th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2012-06-04 DOI: 10.1109/ICGPR.2012.6254989

Sang-Wook Kim, Jong-Sung Choi, Se-Yun Kim

引用次数: 1

Using polarimetric GPR antenna to characterize hidden cylinders 利用极化探地雷达天线对隐藏柱体进行表征

2012 14th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2012-06-04 DOI: 10.1109/ICGPR.2012.6254856

I. Catapano, L. Crocco, G. Gennarelli, F. Soldovieri, L. Orlando, B. Renzi

引用次数: 2

A coded pulse UWB radar system design for life sign detection 一种用于生命信号检测的编码脉冲超宽带雷达系统设计

2012 14th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2012-06-04 DOI: 10.1109/ICGPR.2012.6254836

Wei Wang, Ziwei Chen, Jing Chen, Qunying Zhang, G. Fang

引用次数: 2

Computer tomography as imaging technique for ground penetrating radar — A case study 计算机断层成像技术在探地雷达成像中的应用-一个案例研究

2012 14th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2012-06-04 DOI: 10.1109/ICGPR.2012.6254878

B. Panzner, A. Jostingmeier, A. Omar

引用次数: 1

Multi-channel GPR to assess the influence of shallow structural heterogeneity on spatio-temporal variations of near-surface soil water content 多通道探地雷达评价浅层结构异质性对近地表土壤含水量时空变化的影响

2012 14th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2012-06-04 DOI: 10.1109/ICGPR.2012.6254944

Xicai Pan, P. Klenk, K. Roth, Jia-bao Zhang, Ping Huang, Dan He

{"title":"Multi-channel GPR to assess the influence of shallow structural heterogeneity on spatio-temporal variations of near-surface soil water content","authors":"Xicai Pan, P. Klenk, K. Roth, Jia-bao Zhang, Ping Huang, Dan He","doi":"10.1109/ICGPR.2012.6254944","DOIUrl":"https://doi.org/10.1109/ICGPR.2012.6254944","url":null,"abstract":"Structural heterogeneity in the vadose zone can significantly influence the dynamics of surface and subsurface distribution of water. It is one important reason for the patterned crops in fields. GPR as a non-invasive tool facilitates the quick investigation of subsurface structures and associated soil water contents of agricultural lands. A field study site with patterned wheat was surveyed at 1.5 m line spacing using 400 MHz multichannel GPR. Through time-lapse snapshots of the ground with multi-channel GPR and surface TDR measurements after a heavy rainfall event, we (i) determine the subsurface 3D architecture, (ii) simultaneously measure the depth-averaged soil water content, and (iii) assess the influence of the structural heterogeneity on the surface and subsurface soil water redistribution. Through investigating the field-scale soil water dynamics, we discuss the relationship between soil architecture and the patterned crops in hydrological perspective. Results demonstrate that multi-channel GPR allows the collection of valuable information about the subsurface structure and soil water dynamics at site-specific land.","PeriodicalId":443640,"journal":{"name":"2012 14th International Conference on Ground Penetrating Radar (GPR)","volume":"3 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":"125553010","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 study of the interference stripe phenomenon caused by electromagnetic wave propagating in multi-layered medium 电磁波在多层介质中传播引起的干涉条纹现象的研究

2012 14th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2012-06-04 DOI: 10.1109/ICGPR.2012.6254966

Diao Qilong, Huang Chunlin

{"title":"A study of the interference stripe phenomenon caused by electromagnetic wave propagating in multi-layered medium","authors":"Diao Qilong, Huang Chunlin","doi":"10.1109/ICGPR.2012.6254966","DOIUrl":"https://doi.org/10.1109/ICGPR.2012.6254966","url":null,"abstract":"The interference stripe appears in the penetrating scan experiments of multi-layered medium detection, the experiments are implemented by the single-frequency plane array or the moved single transmitting/receiving (T/R) antenna. Based on the medium boundary conditions of Maxwell equations from the classic electromagnetic theory, the interference stripe phenomenon is studied in the paper. And the commercial simulation software CST Microwave Studio is used to construct the simulation models. Under the near-field condition, the propagation and reflection of electromagnetic wave in the monolayer medium and the multi-layered media are simulated. Two situations, the electromagnetic wave being perpendicular and oblique to the dielectric plate, are specially carried out to compare. The echo waves received by the antenna changed position are analyzed. It can be found that there is no interference stripe when the incident wave is perpendicular to the dielectric plate. However, the interference stripe phenomenon will arise when there is a certain angle between the incident wave and the normal of the dielectric plate. This can be proved by the scan experiments results. The existence of the interference stripe will cause serious disturbance to the target echo, because the former is greater than the latter. So it will affect the performance of target detection and identification. From the point of view of the electromagnetic wave incidence and reflection theorem, the existence reason of this phenomenon is discussed. The relationship between the incident angle and interference stripe is illuminated. The study of this phenomenon will be helpful for the signal processing of the plane array and the moved single T/R antenna scanning system, such as the interference stripe phenomenon reducing and the target imaging quality improving. It can also be helpful for solving some problems encountered in the highways detecting, archeology, geology survey, etc.","PeriodicalId":443640,"journal":{"name":"2012 14th International Conference on Ground Penetrating Radar (GPR)","volume":"12 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":"122661325","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

Application of LTD-2100 ground penetrating radar to advanced forecast in diversion tunnel of Jinping Hydroelectric power Station

2012 14th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2012-06-04 DOI: 10.1109/ICGPR.2012.6254832

Yuanxin Wang, Zhao Zhang, Qiang Ren, Y. Wu, Z. Peng

引用次数: 4

2012 14th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2012-06-04 DOI: 10.1109/ICGPR.2012.6254914

Lei Song, Jiahui Huang, Weihao Yang, XiaoJun Zhang, Hai-ou Liu

{"title":"GPR similarity criteria and model experimental study on artificial freezing engineering","authors":"Lei Song, Jiahui Huang, Weihao Yang, XiaoJun Zhang, Hai-ou Liu","doi":"10.1109/ICGPR.2012.6254914","DOIUrl":"https://doi.org/10.1109/ICGPR.2012.6254914","url":null,"abstract":"Nowadays, the artificial freezing method is an important technique to construct in deep alluvium and fracture rock layers. It was needed to develop a highly efficient, highly precise and non-destructive testing method for freezing wall monitoring. Based on the partial difference function of radar waves, the similarity transformation method was used to deduce the relationship between model experiments and prototype detection. Similarity criterias of GPR EM fields was proposed, and the similarity preconditions of GPR EM field were suggested. The preconditions given in this paper compare the travel time and amplitude of GPR signals between model experiments and prototype detections. Higher frequency antennas were commonly used in GPR model experiments. For instance, in the Artificial Freezing Engineering (AFE) GPR model, according to the feature of its EM parameters at frequencies form 10MHz to 1000MHz, such as similar magnetic permeability, similar dielectric constant and slightly lower electric conductivity, the similarity criteria could not be satisfied when the prototype media were used in model experiments; and the amplitude of electromagnetic (EM) fields could not be strictly similar to that of prototypes. It was deduced that in AFE the travel time and characters of anomalies in GPR profiles are similar to that of prototypes, while the amplitude of GPR signals would be much stronger than that of prototypes. By the model experiment and field exploration, the characteristics of typical anomalies in AFE, such as freezing pipe and defects, were obtained and reported in this paper. It is found that they played an important role in the construction of the connecting passage of Shanghai Yangtze River Tunnel. The research findings have an important theoretical value for AFE and the permafrost region engineering. The Similarity Criteria and analysis method can also be used in other areas where the prototype media are used in GPR model experiments.","PeriodicalId":443640,"journal":{"name":"2012 14th International Conference on Ground Penetrating Radar (GPR)","volume":"41 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":"129533065","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

Considerations of the blind region for single-borehole bistatic and monostatic pulse radars 单孔双基地和单基地脉冲雷达盲区的考虑

2012 14th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2012-06-04 DOI: 10.1109/ICGPR.2012.6254988

Jae-Hyoung Cho, Sang-Wook Kim, J. Yook, Se-Yun Kim

引用次数: 1