2016 16th International Conference on Ground Penetrating Radar (GPR)最新文献

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Landmine detection with holographic radar 用全息雷达探测地雷
2016 16th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2016-06-13 DOI: 10.1109/ICGPR.2016.7572660
X. Song, Y. Su, C. Huang, M. Lu, S. Zhu
{"title":"Landmine detection with holographic radar","authors":"X. Song, Y. Su, C. Huang, M. Lu, S. Zhu","doi":"10.1109/ICGPR.2016.7572660","DOIUrl":"https://doi.org/10.1109/ICGPR.2016.7572660","url":null,"abstract":"Holographic radar is a promising method of detecting landmines. Taking advantage of high plan-view resolution, holographic radar is able to discriminate targets from clutter objects. However, as high-frequency electromagnetic waves attenuate fast in soil, the performance of holographic radar in field experiments needs to be validated. Hence, we conduct experiments in different environments with the holographic radar system developed by our lab. To speed up data acquisition, we adopt a radial sampling scheme. The corresponding data processing algorithm, named `wavenumber domain filtered backprojection', is presented and verified with numerical simulation and field experimental data. The experimental results confirmed the feasibility and efficiency of holographic radar in detecting shallowly buried targets.","PeriodicalId":187048,"journal":{"name":"2016 16th International Conference on Ground Penetrating Radar (GPR)","volume":"57 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":"126292125","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
Rebar diameter and rebar orientation using different antenna polarizations 螺纹钢直径和螺纹钢方向使用不同的天线极化
2016 16th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2016-06-13 DOI: 10.1109/ICGPR.2016.7572607
J. Hugenschmidt, F. Wenk
{"title":"Rebar diameter and rebar orientation using different antenna polarizations","authors":"J. Hugenschmidt, F. Wenk","doi":"10.1109/ICGPR.2016.7572607","DOIUrl":"https://doi.org/10.1109/ICGPR.2016.7572607","url":null,"abstract":"It is well known, that the antenna polarization is a relevant parameter for the inspection of different orientations of rebars. In particular, an electric field that is parallel to the rebar orientation will result in a reflection that is much stronger than one caused by an electric field that is orthogonal to the rebar orientation. When horn antennas are used, it can be shown that both rebar orientations can be inspected even when driving in one direction only, because of the geometry of the ray path. This is not true for coupled antennas. This paper describes the basics of the influence of the antenna polarization and the raypath of horn antennas when compared to ground coupled antennas. This is followed by the description of a field test on a real bridge combined with extensive destructive testing. Both rebar orientations were mapped successfully by collecting data along lines parallel to the bridge axis. In addition, the diameter of the top orientation of rebars was successfully estimated by a comparison of the results for the concrete cover for the two orientations.","PeriodicalId":187048,"journal":{"name":"2016 16th International Conference on Ground Penetrating Radar (GPR)","volume":"27 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":"132994377","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
Data processing of backfill grouting detected by GPR in shield tunnel and research on equipment of GPR antenna 盾构隧道探地雷达探测回填灌浆数据处理及探地雷达天线设备研究
2016 16th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2016-06-13 DOI: 10.1109/ICGPR.2016.7572690
Xiongyao Xie, Y. Chen, B. Zhou
{"title":"Data processing of backfill grouting detected by GPR in shield tunnel and research on equipment of GPR antenna","authors":"Xiongyao Xie, Y. Chen, B. Zhou","doi":"10.1109/ICGPR.2016.7572690","DOIUrl":"https://doi.org/10.1109/ICGPR.2016.7572690","url":null,"abstract":"In recent years, the shield tunneling method has been widely used in the construction of urban underground space. Through using ground penetrating radar (GPR) for nondestructive testing of the distribution of grouting behind segments of shield tunnel, secondary compensatory grouting can be carried out, which is aimed at controlling the final longitudinal settlement of the tunnel. In this paper, the main point is to develop a set of machinery to detect grouting in real time during the construction period. First, a 500MHz bowtie antenna and 500MHz Vivaldi antenna produced good effects by simulation and tests. Second, a set of machinery consisting of arc-tracks was designed. This machinery is connected to the shield tunneling machine. The antenna, which moves along the tracks, can detect the grouting in the assembled segments. The detection data is automatically stored in the upper computer. The secondary compensatory grouting can then be carried out in time if the grouting quality does not conform to the specification.","PeriodicalId":187048,"journal":{"name":"2016 16th International Conference on Ground Penetrating Radar (GPR)","volume":"23 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":"121895498","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
Subsurface fine structures survey by GPR B-scan image based on signal subspace method 基于信号子空间法的探地雷达b扫描图像地下精细结构测量
2016 16th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2016-06-13 DOI: 10.1109/ICGPR.2016.7572593
T. Sun, Z. C. Zhang, B. Song, X. J. Tang, S. Liu
{"title":"Subsurface fine structures survey by GPR B-scan image based on signal subspace method","authors":"T. Sun, Z. C. Zhang, B. Song, X. J. Tang, S. Liu","doi":"10.1109/ICGPR.2016.7572593","DOIUrl":"https://doi.org/10.1109/ICGPR.2016.7572593","url":null,"abstract":"Ground Penetrating Radar (GPR) is an efficient remote sensing tool for geophysical subsurface survey. These structure characteristics are recorded in radar signal profiles by means of echo detection, amplitude and phase estimation. Besides the energy attenuation and absorption of GPR EM pulse during its propagating downward direction into the ground from a transmitting antenna, the strong interferences, clutters, multiples and random noise, often make the fine-structures hardly distinguishable. This paper develops a signal subspace method to detect fine fractures, leading to water intrusion at the Dazu Rock Carving site. With field surveying data, this method is validated to detect sub-surface fine structure with sparse representation and yields discriminative fracture signature for geological interpretation.","PeriodicalId":187048,"journal":{"name":"2016 16th International Conference on Ground Penetrating Radar (GPR)","volume":"74 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":"121911720","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
Detection of human's motions through a wall using UWB radar 利用超宽带雷达透过墙壁探测人类的运动
2016 16th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2016-06-13 DOI: 10.1109/ICGPR.2016.7572620
Q. Lu, Cai Liu, Z. Zeng, Jing Li, Xuebing Zhang
{"title":"Detection of human's motions through a wall using UWB radar","authors":"Q. Lu, Cai Liu, Z. Zeng, Jing Li, Xuebing Zhang","doi":"10.1109/ICGPR.2016.7572620","DOIUrl":"https://doi.org/10.1109/ICGPR.2016.7572620","url":null,"abstract":"Ultrawideband radar has been applied in the through-wall life detection since it has high spatial resolution and better wall-penetration capability. In this paper, we perform a through-wall detection of human's motions using UWB radar. We use local mean decomposition (LMD) method to process radar signals reflected from a moving person. LMD is a new iterative approach that decomposes modulated signals into a small set of product functions (PFs), each of which is the product of an amplitude envelope signal and a frequency-modulated signal. The PFs, the decomposed radar signals, are used to extract signatures of human motions. After processing the data using LMD, a cross-range fast Fourier Transform (FFT) is applied to each PF to distinguish the frequency characteristic of moving body parts. Based on the joint analysis of LMD and FFT, respiration, swinging arms and legs, and fluctuations of the torso included in the human' s motion are extracted.","PeriodicalId":187048,"journal":{"name":"2016 16th International Conference on Ground Penetrating Radar (GPR)","volume":"44 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":"125892131","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: 5
Study on regolith modeling and lunar penetrating radar simulation 风化层模拟与探月雷达模拟研究
2016 16th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2016-06-13 DOI: 10.1109/ICGPR.2016.7572606
L. Zhang, Z. Zeng, J. Li, J. Lin
{"title":"Study on regolith modeling and lunar penetrating radar simulation","authors":"L. Zhang, Z. Zeng, J. Li, J. Lin","doi":"10.1109/ICGPR.2016.7572606","DOIUrl":"https://doi.org/10.1109/ICGPR.2016.7572606","url":null,"abstract":"Lunar penetrating radar (LPR) is an important way to carry out lunar probing. The detection result of Rabbit lunar radar carried by Chang'E 3 provides a reliable scientific foundation for studying the underground structure and depth distribution of the Moon. The regolith modeling and numerical simulation can provide a reliable reference for lunar detection and data interpretation. In this abstract, we try to build a lunar near-surface model according to previous research result which is as far as possible simulating a realistic situation of the regolith layer. We use a finite difference time domain (FDTD) numerical simulation tool and analyze the electromagnetic response characteristics of the model. Simple processing was performed including migration and topographic correction. Our study does not only show a reliable method to establish a lunar near-surface model, but also provide a reference to process and interpret LPR data.","PeriodicalId":187048,"journal":{"name":"2016 16th International Conference on Ground Penetrating Radar (GPR)","volume":"58 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":"128537947","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: 6
GPR investigation of “Fortezza da Basso” (Lower Fortress) in Florence, Italy 意大利佛罗伦萨“Fortezza da Basso”(下堡垒)探地雷达调查
2016 16th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2016-06-13 DOI: 10.1109/ICGPR.2016.7572674
M. Pieraccini, L. Capineri, P. Falorni, D. Devis
{"title":"GPR investigation of “Fortezza da Basso” (Lower Fortress) in Florence, Italy","authors":"M. Pieraccini, L. Capineri, P. Falorni, D. Devis","doi":"10.1109/ICGPR.2016.7572674","DOIUrl":"https://doi.org/10.1109/ICGPR.2016.7572674","url":null,"abstract":"The “Fortezza da Basso” (Lower Fortress) is one of the most significant monument in Florence, Italy. Currently is a prestigious facility for exhibitions and international events. The municipal government intends to built new pavilions, but the Superintendency office of monuments and cultural heritage required a critical critical historic and architectonic study including a GPR survey. In this paper the authors report the results of a GPR measurement campaign carried out with this aim. In particular at “Cavaniglia” bastion the buried structures of the ruined tower have been mapped and a possible arched structure, previously not known, has been detected in the underground.","PeriodicalId":187048,"journal":{"name":"2016 16th International Conference on Ground Penetrating Radar (GPR)","volume":"165 2 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":"127538127","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
Optimization of antenna polarization of the multistatic GPR system “Yakumo” “Yakumo”多基地探地雷达系统天线极化优化
2016 16th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2016-06-13 DOI: 10.1109/ICGPR.2016.7572664
M. Sato, L. Yi, Y. Iitsuka, L. Zou, K. Takahashi
{"title":"Optimization of antenna polarization of the multistatic GPR system “Yakumo”","authors":"M. Sato, L. Yi, Y. Iitsuka, L. Zou, K. Takahashi","doi":"10.1109/ICGPR.2016.7572664","DOIUrl":"https://doi.org/10.1109/ICGPR.2016.7572664","url":null,"abstract":"We have developed 8Ch array GPR system “Yakumo” and have demonstrated the performance of the multistatic radar. At first, the effect of the antenna polarization and the antenna spacing to GPR signal in the multistatic GPR system was evaluated by a laboratory experiment. Using this multistatic GPR system, we can estimate the vertical profile of the electromagnetic wave velocity by CMP method at every position while operating the system along a survey line. However, in order to improve the quality of the CMP data, antenna polarization should be perpendicular to the direction of the survey line, which is 90 degree rotated from conventional GPR measurements. We found that this arrangement may decrease the quality of B-scan of GPR data. We then rotated the antenna polarization, so that the antenna polarization can be set perpendicular to the direction of survey. The B-scan quality was improved, but CMP data quality was decreased. Meanwhile, we have not observed much difference in C-scan images.","PeriodicalId":187048,"journal":{"name":"2016 16th International Conference on Ground Penetrating Radar (GPR)","volume":"50 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":"127258072","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: 5
A method of removing interference fringes on spherical subsurface imaging with continuous wave penetrating radar 连续波穿透雷达球面地下成像干涉条纹的去除方法
2016 16th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2016-06-13 DOI: 10.1109/ICGPR.2016.7572651
M. T. Li, C. Huang, Y. Su
{"title":"A method of removing interference fringes on spherical subsurface imaging with continuous wave penetrating radar","authors":"M. T. Li, C. Huang, Y. Su","doi":"10.1109/ICGPR.2016.7572651","DOIUrl":"https://doi.org/10.1109/ICGPR.2016.7572651","url":null,"abstract":"This paper focuses on the affection of the curved surface media. In order to study it, the continuous wave penetrating radar (CWPR) is applied to detect targets buried in the spherical media. The antennae move in a plane above the spherical surface and execute two dimensions sampling. Different from planar media, this special geometry makes the echoes of the surface interfere, and several circular interference fringes which awfully degrade the imaging quality could be found. In this paper, a novel method is proposed to remove the interference fringes for improving the spherical subsurface imaging. Due to the geometric symmetry, a distribution difference in spatial spectrum domain between the echo of spherical surface and back-scattering field of target beneath the surface can be found out subsequently when a 2D Fourier transformation has been conducted on the data matrix. Therefore, a filter based on this difference is designed to remove the disturbance of interference fringes. Taking advantage of spatial spectrum filtering, CWPR successfully wipes off the fringes caused by spherical surfaces and makes substantial progress in image quality of the subsurface imaging. Moreover, the numerical simulation and experiment results validate the availability of the proposed method.","PeriodicalId":187048,"journal":{"name":"2016 16th International Conference on Ground Penetrating Radar (GPR)","volume":"4 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":"132399507","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
GPR detection of subsurface voids and its validation based on similarity principle 基于相似原理的地下空洞探地雷达探测及其验证
2016 16th International Conference on Ground Penetrating Radar (GPR) Pub Date : 2016-06-13 DOI: 10.1109/ICGPR.2016.7572662
L. Liu, R. Qian, J. Li, M. Sun, S. Ge
{"title":"GPR detection of subsurface voids and its validation based on similarity principle","authors":"L. Liu, R. Qian, J. Li, M. Sun, S. Ge","doi":"10.1109/ICGPR.2016.7572662","DOIUrl":"https://doi.org/10.1109/ICGPR.2016.7572662","url":null,"abstract":"In this paper we adopt the similarity principle to study GPR response to voids under road surface or in the levees and dams by cross-examination of GPR data acquired using both high-frequency antennas on laboratory bench-size models and low-frequency antennas in the field. In physical world the similarity principle is widely used in theoretical study and engineering practice. In short, by the similarity principle, the following statement can be true: the experiment result obtained from a smaller scale can be extrapolated to a larger scale as long as the ratio of the wavelength of the signal to the size of the target keeps the same. Complete similarity includes three aspects: geometric similarity, kinematic similarity, and dynamic similarity. For GPR detection of road voids, the geometric similarity (i.e., depth, size, and shape of the voids) and kinematic similarity (i.e., radar wave propagation velocity) are more critical. The dynamic similarity (i.e., the reflectivity or the contrast of the materials) can be automatically met when we use the similar material in the model and the field. For example, if we can detect a 10-cm void by using 2-GHz antenna, we sure should detect a 1-m void by using 200-MHz (0.2-GHz) GPR antenna in the same medium. That implies that all the phenomena observed in the high-frequency test can be extrapolated to the low-frequency situation. Meanwhile, experiments with high-frequency GPR on smaller-scale models are more economical and easier to be carried out. We conducted the high-frequency experiment by using 2.6-GHz antennas over a sandbox model in the lab. We also examine the validity of the similarity principle to GPR void detection by comparing the high-frequency, lab-scale data to low-frequency, field-scale GPR data acquired from GPR surveys on highways and levees.","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":"125489805","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
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