2012 14th International Conference on Ground Penetrating Radar (GPR)最新文献_第10页

Anthropogenic transformation of lowland river pattern and changes of spatial extent of lakes inferred from ground-penetrating radar and remote sensing surveys (the Obra River, Poland) 基于探地雷达和遥感的低地河流格局的人为转化与湖泊空间范围的变化(波兰奥布拉河)

2012 14th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2012-06-04 DOI: 10.1109/ICGPR.2012.6254959

M. Słowik

{"title":"Anthropogenic transformation of lowland river pattern and changes of spatial extent of lakes inferred from ground-penetrating radar and remote sensing surveys (the Obra River, Poland)","authors":"M. Słowik","doi":"10.1109/ICGPR.2012.6254959","DOIUrl":"https://doi.org/10.1109/ICGPR.2012.6254959","url":null,"abstract":"A significant environmental change took place in the middle course of the Obra River (western Poland). The natural river bed pattern was replaced here by three artificial canals in the beginning of the 19th century. Before that time the Obra River bed had been characterized by various river patterns (multi-channel, meandering and disappearing in wetlands). GPR (ground-penetrating radar) surveys and the analysis of historical maps and satellite and aerial images were conducted to retrace the natural river course and changes of spatial extent of Obrzańskie Lake. Two types of the Obra river patterns, which had been functioning here before the period of the hydrotechnical works, were retraced: a large scale meandering pattern and a relatively smaller scale multi-channel pattern indicating features of anastomosing river. The transformation from the meandering to multi-channel pattern might have been caused by climatic changes and/or forming a bifurcation to the Odra River. Historical maps indicated that the multi-channel pattern was active in the second half of the 18th century. Next, the multichannel pattern was artificially transformed into the North Obra Canal. Furthermore, the shorelines of Obrzańskie Lake from the period preceding the hydrotechnical works and from the 19th century were delineated on the basis of the geophysical and remote sensing surveys. Before the anthropogenic intervention, the lake had been directly connected with a network of the Obra channels. Construction of the North Obra Canal resulted in significant decrease of the lake's surface. The presented results may be used in a restoration project aiming to reconstruct the natural river course. Such intervention would increase natural values of the middle Obra valley and influence development of tourism in this area.","PeriodicalId":443640,"journal":{"name":"2012 14th International Conference on Ground Penetrating Radar (GPR)","volume":"16 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":"124393516","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

Application research of potential failure zone detection for seawall using ground penetrating radar 探地雷达在海堤潜在失效区探测中的应用研究

2012 14th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2012-06-04 DOI: 10.1109/ICGPR.2012.6254974

S. Ge, Minqiang Zhang, Guoqian Liang, Xiaohua Zhang, Chaoying Liu, Yonghui Zhao, Jun Chen

引用次数: 0

Kirchhoff migration for specifying velocity model in ground penetrating radar method 探地雷达方法中确定速度模型的Kirchhoff偏移

2012 14th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2012-06-04 DOI: 10.1109/ICGPR.2012.6254902

Nguyen Thanh Van, L. Cường, Dang Hoai Trung, Võ Minh Triết, Huynh Kim Tuan, N. Giảng

引用次数: 3

Performance of a demining GPR related to soil properties and clutter 与土壤特性和杂波有关的扫雷探地雷达性能

2012 14th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2012-06-04 DOI: 10.1109/ICGPR.2012.6254981

K. Takahashi, J. Igel, H. Preetz

引用次数: 1

Quality control of stone blocks during quarrying activities 采石过程中石块的质量控制

2012 14th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2012-06-04 DOI: 10.1109/ICGPR.2012.6254975

D. Arosio, S. Munda, L. Zanzi

{"title":"Quality control of stone blocks during quarrying activities","authors":"D. Arosio, S. Munda, L. Zanzi","doi":"10.1109/ICGPR.2012.6254975","DOIUrl":"https://doi.org/10.1109/ICGPR.2012.6254975","url":null,"abstract":"Early detection of fractures and internal defects can help quarry owners in cutting quarrying costs and reducing the amount of waste products. Valuable stones used in construction industry such as marble, porphyry, granite, travertine, are usually extracted from quarries by cutting blocks whose size normally varies between 5 and 15 m3. Transportation of these blocks from quarries, often located at high altitudes in mountainous environments, down to the headquarters of the stone industry where big machines are installed to transform the big size blocks into slabs or small size stones, can be quite expensive. Money could be saved by checking on-site the big size blocks with NDT methods able to detect internal fractures and other defects (voids, clay inclusions, etc.). A detailed map of fracture extension and orientation can be also very profitable in optimizing the production line. For example, the final destination of a block (i.e., production of slabs rather than small size blocks or other) and the orientation of the cutting planes can be more properly assigned. Currently, Ground Penetrating Radar is the most promising method for this type of application. It can be applied on-site, it can generate high resolution 3D reconstructions of fractures and defects, quasi-real-time results are feasible. Thus, it can be a cost-effective tool, worth being introduced into the quarry industry. To evaluate the potential of this technology for the quarry industry we have been testing the method on marble and porphyry blocks from a couple of quarries belonging to the Brescia stone district (North Italy). Results are very encouraging: all type of defects and fractures that might have an impact on the production line can be detected by 3D surveying the block with a 2GHz GPR system. A dual-polarized antenna is a plus that makes acquisitions faster and easier. Data processing must include two-dimensional filtering to cancel the artifacts generated by side reflections and 3D migration to generate accurate reconstructions of the target geometries.","PeriodicalId":443640,"journal":{"name":"2012 14th International Conference on Ground Penetrating Radar (GPR)","volume":"15 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":"114234848","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: 14

Subsurface target identification using phase profiling of impulse GPR data 脉冲探地雷达数据相位剖面的地下目标识别

2012 14th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2012-06-04 DOI: 10.1109/ICGPR.2012.6254894

V. Mikhnev, Martta-Kaisa Olkkonen, E. Huuskonen

{"title":"Subsurface target identification using phase profiling of impulse GPR data","authors":"V. Mikhnev, Martta-Kaisa Olkkonen, E. Huuskonen","doi":"10.1109/ICGPR.2012.6254894","DOIUrl":"https://doi.org/10.1109/ICGPR.2012.6254894","url":null,"abstract":"The problem of target discrimination in ground penetrating radar data (GPR) is addressed in this study. Formerly developed frequency-domain technique based on building separate amplitude and phase profiles for every A-scan has been modified to be suitable also for impulse GPR data. To this end, impulse radar data have been preprocessed and transformed to frequency domain. The rest of the algorithm is rather similar to the case of frequency-domain radar data. The method yields a phase profile as a function of depth that is related to the phase shift occurring in the act of reflection of the wave from inhomogeneity existing at given depth. This phase shift depends on the contrast between the target and surrounding medium and thus can be used for target characterization. The technique was used to interpret data collected over a test site, where metal bars and a plastic pipe were buried inside sand and gravel. The radar data was collected with Malâ's CX11 Concrete Imaging System operating at the 1600 MHz central frequency. The images built with the use of the novel signal processing technique demonstrate its validity for recognition of some buried objects.","PeriodicalId":443640,"journal":{"name":"2012 14th International Conference on Ground Penetrating Radar (GPR)","volume":"87 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":"114525849","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

Increasing the efficiency of inversion method by using data compression technique during reconstruction 在重建过程中采用数据压缩技术，提高了反演方法的效率

2012 14th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2012-06-04 DOI: 10.1109/ICGPR.2012.6254871

Hui Zhou, Qingqing Li

引用次数: 0

Research on measurement of Kunming lake storage capacity with GPR 昆明湖库容探地雷达测量研究

2012 14th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2012-06-04 DOI: 10.1109/ICGPR.2012.6254998

Zhang Jin-song, Dong Zhi-hai, An Zhi-ming

引用次数: 0

High-resolution penetrating radar for ice thickness measurement 用于冰厚测量的高分辨率穿透雷达

2012 14th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2012-06-04 DOI: 10.1109/ICGPR.2012.6254844

W. Wenpeng, Zhao Bo, L. Xiaojun, Yu Jian, F. Guangyou

引用次数: 1

Accelerating three-dimensional electromagnetic wave modeling in dispersive media with staggered-grid fourier pseudospectral method on graphics processing unit 在图形处理单元上加速色散介质中三维电磁波的交错网格傅立叶伪谱模拟

2012 14th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2012-06-04 DOI: 10.1109/ICGPR.2012.6254861

Guihua Long, G. Tian, Jian Jiang

引用次数: 1