Pub Date : 2014-12-04DOI: 10.1109/ICGPR.2014.6970474
N. Mourmeaux, A. Tran, S. Lambot
Full-wave inverse modeling of low-frequency, near-field ground-penetrating radar (GPR) data was used for simultaneously reconstructing both the electric permittivity and conductivity of the soil. Low GPR frequencies provide a significant sensitivity of the reflection coefficient to electrical conductivity and are less affected by soil roughness and local heterogeneities. Based on the near-field model, several numerical experiments were conducted to simultaneously retrieve ground electrical conductivities and dielectrical permittivities in the range 10-180 MHz for different water contents. We calibrated a time-domain GPR system equipped with transmitting and receiving 80 MHz unshielded dipoles antennas using measurements collected at different heights over a water layer of known electrical conductivity. Then, the GPR model was validated for measurements collected over water subject to a range of electrical conductivities. A good agreement was obtained between the radar data and the fullwave electromagnetic model for the different antenna heights but the water layer properties were not accurately retrieved. These differences were attributed to errors in the transfer functions of the antenna mainly due to the instability of the radar system. The future challenge in this research will focus on an accurate determination of the antenna transfer functions of a stable radar system for improved medium reconstruction.
{"title":"Soil permittivity and conductivity characterization by full-wave inversion of near-field GPR data","authors":"N. Mourmeaux, A. Tran, S. Lambot","doi":"10.1109/ICGPR.2014.6970474","DOIUrl":"https://doi.org/10.1109/ICGPR.2014.6970474","url":null,"abstract":"Full-wave inverse modeling of low-frequency, near-field ground-penetrating radar (GPR) data was used for simultaneously reconstructing both the electric permittivity and conductivity of the soil. Low GPR frequencies provide a significant sensitivity of the reflection coefficient to electrical conductivity and are less affected by soil roughness and local heterogeneities. Based on the near-field model, several numerical experiments were conducted to simultaneously retrieve ground electrical conductivities and dielectrical permittivities in the range 10-180 MHz for different water contents. We calibrated a time-domain GPR system equipped with transmitting and receiving 80 MHz unshielded dipoles antennas using measurements collected at different heights over a water layer of known electrical conductivity. Then, the GPR model was validated for measurements collected over water subject to a range of electrical conductivities. A good agreement was obtained between the radar data and the fullwave electromagnetic model for the different antenna heights but the water layer properties were not accurately retrieved. These differences were attributed to errors in the transfer functions of the antenna mainly due to the instability of the radar system. The future challenge in this research will focus on an accurate determination of the antenna transfer functions of a stable radar system for improved medium reconstruction.","PeriodicalId":212710,"journal":{"name":"Proceedings of the 15th International Conference on Ground Penetrating Radar","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128417313","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}
Pub Date : 2014-12-04DOI: 10.1109/ICGPR.2014.6970520
A. P. Annan, N. Diamanti, J. Redman
Regulatory emission limits now exist for Ultra Wideband (UWB) ground penetrating radar (GPR) in a number of jurisdictions. The regulations are defined using the concepts and terminology more suited to traditional narrow band radio transmitters. Limited theoretical and experimental information on the emissions from GPR devices have made arguing a compelling case for less stringent emissions levels extremely difficult. Further, the current regulations have the potential to trigger a review on current emission limits in the future. In this paper, we focus on the basic steps needed to translate GPR results into 'regulatory' parameters. We anticipate this will take several years. The ultimate goal is to provide the basis for more sensible rule making, if and when, the regulatory standards come under scrutiny for revision.
{"title":"GPR emissions and regulatory limits","authors":"A. P. Annan, N. Diamanti, J. Redman","doi":"10.1109/ICGPR.2014.6970520","DOIUrl":"https://doi.org/10.1109/ICGPR.2014.6970520","url":null,"abstract":"Regulatory emission limits now exist for Ultra Wideband (UWB) ground penetrating radar (GPR) in a number of jurisdictions. The regulations are defined using the concepts and terminology more suited to traditional narrow band radio transmitters. Limited theoretical and experimental information on the emissions from GPR devices have made arguing a compelling case for less stringent emissions levels extremely difficult. Further, the current regulations have the potential to trigger a review on current emission limits in the future. In this paper, we focus on the basic steps needed to translate GPR results into 'regulatory' parameters. We anticipate this will take several years. The ultimate goal is to provide the basis for more sensible rule making, if and when, the regulatory standards come under scrutiny for revision.","PeriodicalId":212710,"journal":{"name":"Proceedings of the 15th International Conference on Ground Penetrating Radar","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128508834","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}
Pub Date : 2014-12-04DOI: 10.1109/ICGPR.2014.6970385
Yossi Salmon, L. Conyers, H. Jol, M. Artzy
The establishment of the settlement at the start of the 2nd millennium BCE in the Nami region of Israel marks the beginning of a new era of human habitation in this region, following a hiatus of ca 500 years. Tel Nami was deserted ca. 200 years later, not to be settled again for another 400 years or more. Nami is in a system that combines wetlands and coastal depositional packages of marine and aeolian sediments in addition to archaeological features. These environments are very complex in terms of their geophysical (dielectric) properties. In addition, the proximity to the sea and the intrusion of seawater to the subterranean medium creates areas with high high salinity (conductive) and high water content values. Four areas were selected for GPR data collection to create amplitude maps and collected with 400MHz and 270MHz antennas. A total of 7,450 sq meters of data was collected. Each of the grids shows a complex series of depositional units from different environments that provide a framework of ancient habitations. In two 3D surveys, archaeological features were detected, indicating fragments of walls and floors. Under them, in one instance high reflective features were detected. These are likely aeolianite sandstone, in contrast to low reflective limestone, the usual building material of the site of the period. This slab might indicate a Middle bronze tomb covered by a stele.
{"title":"Early second millennium settlement landscape in the Nami Region, Israel, revealed by GPR investigations","authors":"Yossi Salmon, L. Conyers, H. Jol, M. Artzy","doi":"10.1109/ICGPR.2014.6970385","DOIUrl":"https://doi.org/10.1109/ICGPR.2014.6970385","url":null,"abstract":"The establishment of the settlement at the start of the 2nd millennium BCE in the Nami region of Israel marks the beginning of a new era of human habitation in this region, following a hiatus of ca 500 years. Tel Nami was deserted ca. 200 years later, not to be settled again for another 400 years or more. Nami is in a system that combines wetlands and coastal depositional packages of marine and aeolian sediments in addition to archaeological features. These environments are very complex in terms of their geophysical (dielectric) properties. In addition, the proximity to the sea and the intrusion of seawater to the subterranean medium creates areas with high high salinity (conductive) and high water content values. Four areas were selected for GPR data collection to create amplitude maps and collected with 400MHz and 270MHz antennas. A total of 7,450 sq meters of data was collected. Each of the grids shows a complex series of depositional units from different environments that provide a framework of ancient habitations. In two 3D surveys, archaeological features were detected, indicating fragments of walls and floors. Under them, in one instance high reflective features were detected. These are likely aeolianite sandstone, in contrast to low reflective limestone, the usual building material of the site of the period. This slab might indicate a Middle bronze tomb covered by a stele.","PeriodicalId":212710,"journal":{"name":"Proceedings of the 15th International Conference on Ground Penetrating Radar","volume":"2016 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128034853","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}
Pub Date : 2014-12-04DOI: 10.1109/ICGPR.2014.6970547
J. Simonin, V. Baltazart, P. Hornych, Xavier Dérobert, E. Thibaut, J. Sala, V. Utsi
Over the past years, radar systems have emerged as a powerful non-destructive testing (NDT) technique for pavement surveys. Radar systems have several major advantages, such as a high data acquisition rate and global monitoring through quasi-continuous measurements. Two radar techniques are tested for pavement structures. Impulse radar was the first technology used by the GPR community. In the 1990s, step-frequency technology enabled larger bandwidth and improved time resolution. The two radar techniques are now able to collect data at traffic speed. They record measurements along a longitudinal profile usually located in a wheel-path to provide Bscan records of the roadways pavement. It allows to detect layer interfaces and to estimate layer thickness and sometimes to detect internal defects such as sliding the interface. Since few years, new radar systems have been developed to record several longitudinal profiles and retrieve the 3D view of the pavement structure. In 2013, the opportunity has been found to record some GPR data on the accelerated pavement testing facility of IFSTTAR, with some exhibitors of GPR equipment during the IWAGPR workshop in Nantes. The paper presents the results obtained with two such systems. The results are compared with those from classical GPR on a qualitative basis. The contribution of 3D GPR is clearly demonstrated to detect the spatial extension of pavement layer debonding.
{"title":"Case study of detection of artificial defects in an experimental pavement structure using 3D GPR systems","authors":"J. Simonin, V. Baltazart, P. Hornych, Xavier Dérobert, E. Thibaut, J. Sala, V. Utsi","doi":"10.1109/ICGPR.2014.6970547","DOIUrl":"https://doi.org/10.1109/ICGPR.2014.6970547","url":null,"abstract":"Over the past years, radar systems have emerged as a powerful non-destructive testing (NDT) technique for pavement surveys. Radar systems have several major advantages, such as a high data acquisition rate and global monitoring through quasi-continuous measurements. Two radar techniques are tested for pavement structures. Impulse radar was the first technology used by the GPR community. In the 1990s, step-frequency technology enabled larger bandwidth and improved time resolution. The two radar techniques are now able to collect data at traffic speed. They record measurements along a longitudinal profile usually located in a wheel-path to provide Bscan records of the roadways pavement. It allows to detect layer interfaces and to estimate layer thickness and sometimes to detect internal defects such as sliding the interface. Since few years, new radar systems have been developed to record several longitudinal profiles and retrieve the 3D view of the pavement structure. In 2013, the opportunity has been found to record some GPR data on the accelerated pavement testing facility of IFSTTAR, with some exhibitors of GPR equipment during the IWAGPR workshop in Nantes. The paper presents the results obtained with two such systems. The results are compared with those from classical GPR on a qualitative basis. The contribution of 3D GPR is clearly demonstrated to detect the spatial extension of pavement layer debonding.","PeriodicalId":212710,"journal":{"name":"Proceedings of the 15th International Conference on Ground Penetrating Radar","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128766158","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}
Pub Date : 2014-12-04DOI: 10.1109/ICGPR.2014.6970432
L. Fedorova, K. Sokolov, D. Savvin, V. Fedorov, G. Kulyandin
GPR models are instrumental in improving procedures of signal processing and developing indicators for GPR data interpretation. The paper presents GPR models of basic types of geostructural discontinuities in alluvial placers of Yakutia. Frozen rock massif of placer deposits is characterized by layered structure and includes discontinuities related to disturbance of rock, relict streams, and boulder inclusions where minerals are usually concentrated. It has been shown that geostructural discontinuities of diamond placer areas indicate an anomaly of waveform as chaotic distribution of GPR signals. Field data processing resulted in identification of the zone of bedrock discontinuity in the diamond deposit Mayat (Yakutia province in Siberia). Analysis of GPR data and geological sampling results allowed us to refine the outline of the placer rich in diamonds.
{"title":"GPR modeling of placer deposits geological profiles of permafrost zone","authors":"L. Fedorova, K. Sokolov, D. Savvin, V. Fedorov, G. Kulyandin","doi":"10.1109/ICGPR.2014.6970432","DOIUrl":"https://doi.org/10.1109/ICGPR.2014.6970432","url":null,"abstract":"GPR models are instrumental in improving procedures of signal processing and developing indicators for GPR data interpretation. The paper presents GPR models of basic types of geostructural discontinuities in alluvial placers of Yakutia. Frozen rock massif of placer deposits is characterized by layered structure and includes discontinuities related to disturbance of rock, relict streams, and boulder inclusions where minerals are usually concentrated. It has been shown that geostructural discontinuities of diamond placer areas indicate an anomaly of waveform as chaotic distribution of GPR signals. Field data processing resulted in identification of the zone of bedrock discontinuity in the diamond deposit Mayat (Yakutia province in Siberia). Analysis of GPR data and geological sampling results allowed us to refine the outline of the placer rich in diamonds.","PeriodicalId":212710,"journal":{"name":"Proceedings of the 15th International Conference on Ground Penetrating Radar","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131131300","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}
Pub Date : 2014-12-04DOI: 10.1109/ICGPR.2014.6970436
A. Zhang, B. Li, C. Zhao, D. Wu
In the paper, high resolution ground penetrating radar (GPR) is carried out to locate the trenching site and to delineate the shallow geological structures in the vicinity of the Yushu active strike-up fault zone. After the application of an appropriate processing flow, the interpreted GPR profile can not only clearly determine the deformational zone, but may also image the spatial distribution of fault strands and the geometry of the subsurface. At last, the trench is excavated and shows a good spatial correction with the GPR profile. This study presents that GPR is an effective technique in determining suitable locations for trenching studies, the radargrams can assist in the study of active faults by providing the images of the subsurface and geometry of the subsurface in the vicinity of the fault zone. It also provides useful data for palaeoseismic studies in Yushu area.
{"title":"Application of ground penetrating radar to active faults along Yushu strike-slip faults zone, Qinghai, China","authors":"A. Zhang, B. Li, C. Zhao, D. Wu","doi":"10.1109/ICGPR.2014.6970436","DOIUrl":"https://doi.org/10.1109/ICGPR.2014.6970436","url":null,"abstract":"In the paper, high resolution ground penetrating radar (GPR) is carried out to locate the trenching site and to delineate the shallow geological structures in the vicinity of the Yushu active strike-up fault zone. After the application of an appropriate processing flow, the interpreted GPR profile can not only clearly determine the deformational zone, but may also image the spatial distribution of fault strands and the geometry of the subsurface. At last, the trench is excavated and shows a good spatial correction with the GPR profile. This study presents that GPR is an effective technique in determining suitable locations for trenching studies, the radargrams can assist in the study of active faults by providing the images of the subsurface and geometry of the subsurface in the vicinity of the fault zone. It also provides useful data for palaeoseismic studies in Yushu area.","PeriodicalId":212710,"journal":{"name":"Proceedings of the 15th International Conference on Ground Penetrating Radar","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130481960","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}
Pub Date : 2014-12-04DOI: 10.1109/ICGPR.2014.6970404
Jing Li, Z. Zeng, Lingna Chen, Fengshan Liu
In the vadose zone, soil has become an object of research due to its importance for environmental issues. Description and estimation of the mixed soil water content or dielectric parameter is the essential condition and the key to improving soil investigation with GPR detection. In this paper, first of all, a way to describe 3D random media which the preferred orientation of the multi-scale inhomogeneity is proposed and the importance of reducing the numerical errors with tapering function is stated. Then, we apply the FDTD method to simulate the GPR signal response of random model and use S-transform to test the simulation accuracy. For the complex random soil media, conventional method likes transmission wave method provide model parameter estimation of limited resolution only. Here, we apply a novel reflection amplitude inversion workflow for GPR data which is capable of resolving the subsurface dielectric permittivity and related water content distribution with markedly improved resolution. The synthetic results demonstrate that this method has extensive applicability in complex mixed random soil media detection and physics parameters estimation.
{"title":"Estimation of mixed soil water content by impedance inversion of GPR data","authors":"Jing Li, Z. Zeng, Lingna Chen, Fengshan Liu","doi":"10.1109/ICGPR.2014.6970404","DOIUrl":"https://doi.org/10.1109/ICGPR.2014.6970404","url":null,"abstract":"In the vadose zone, soil has become an object of research due to its importance for environmental issues. Description and estimation of the mixed soil water content or dielectric parameter is the essential condition and the key to improving soil investigation with GPR detection. In this paper, first of all, a way to describe 3D random media which the preferred orientation of the multi-scale inhomogeneity is proposed and the importance of reducing the numerical errors with tapering function is stated. Then, we apply the FDTD method to simulate the GPR signal response of random model and use S-transform to test the simulation accuracy. For the complex random soil media, conventional method likes transmission wave method provide model parameter estimation of limited resolution only. Here, we apply a novel reflection amplitude inversion workflow for GPR data which is capable of resolving the subsurface dielectric permittivity and related water content distribution with markedly improved resolution. The synthetic results demonstrate that this method has extensive applicability in complex mixed random soil media detection and physics parameters estimation.","PeriodicalId":212710,"journal":{"name":"Proceedings of the 15th International Conference on Ground Penetrating Radar","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128066039","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}
Pub Date : 2014-12-04DOI: 10.1109/ICGPR.2014.6970513
Q. Lu, Cai Liu, Xuan Feng
In GPR data processing, it is an important task to find the reflections obscured by the noise. The `empirical mode decomposition' (EMD) method, the key part of Hilbert - Huang transform (HHT), has been used widely to analyze nonlinear and non-stationary data. This paper uses the ensemble EMD (EEMD) combined instantaneous analysis to remove the noise from GPR data. Some obscured reflections are shown in IMFs after decomposition by EEMD. After removing the high frequency noise, the reconstructed profile is obtained. Instead of applying the instantaneous analysis to the reconstructed data directly, the instantaneous attributes are obtained from the differentiated data. This extra step improves the signal resolution. The field data processing results show that the obscured targets in the raw data can be identified clearly. The processing used in this paper can improve data interpretation in GPR detection.
{"title":"Signal enhancement of GPR data based on empirical mode decomposition","authors":"Q. Lu, Cai Liu, Xuan Feng","doi":"10.1109/ICGPR.2014.6970513","DOIUrl":"https://doi.org/10.1109/ICGPR.2014.6970513","url":null,"abstract":"In GPR data processing, it is an important task to find the reflections obscured by the noise. The `empirical mode decomposition' (EMD) method, the key part of Hilbert - Huang transform (HHT), has been used widely to analyze nonlinear and non-stationary data. This paper uses the ensemble EMD (EEMD) combined instantaneous analysis to remove the noise from GPR data. Some obscured reflections are shown in IMFs after decomposition by EEMD. After removing the high frequency noise, the reconstructed profile is obtained. Instead of applying the instantaneous analysis to the reconstructed data directly, the instantaneous attributes are obtained from the differentiated data. This extra step improves the signal resolution. The field data processing results show that the obscured targets in the raw data can be identified clearly. The processing used in this paper can improve data interpretation in GPR detection.","PeriodicalId":212710,"journal":{"name":"Proceedings of the 15th International Conference on Ground Penetrating Radar","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128666081","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}
Pub Date : 2014-12-04DOI: 10.1109/ICGPR.2014.6970548
J. Hugenschmidt, A. Herlyn
The increasing amount of subsurface infrastructure requires a large number of excavation works on existing roads and pavements. After the completion of such work and the reconditioning of the pavement surface, cracks and other pavement damage can be observed in many cases. A relationship between excavation work and subsequent damages has been suggested. In a study aiming at an evaluation of a possible relationship, GPR data were acquired and analyzed on several roads where excavations had been carried out and where pavement damage had occurred in the vicinity. In many cases it was possible to establish a correlation between subsurface structures obtained by GPR and damages visible on the pavement surface. This paper presents acquisition, processing and interpretation of GPR data together with a statistical analysis of the results. In addition, typical GPR reflection patterns are presented and discussed. The results presented in this paper were obtained in a project supported by the Swiss Federal Roads Office (FEDRO).
{"title":"Damages in pavements caused by previous excavation work?","authors":"J. Hugenschmidt, A. Herlyn","doi":"10.1109/ICGPR.2014.6970548","DOIUrl":"https://doi.org/10.1109/ICGPR.2014.6970548","url":null,"abstract":"The increasing amount of subsurface infrastructure requires a large number of excavation works on existing roads and pavements. After the completion of such work and the reconditioning of the pavement surface, cracks and other pavement damage can be observed in many cases. A relationship between excavation work and subsequent damages has been suggested. In a study aiming at an evaluation of a possible relationship, GPR data were acquired and analyzed on several roads where excavations had been carried out and where pavement damage had occurred in the vicinity. In many cases it was possible to establish a correlation between subsurface structures obtained by GPR and damages visible on the pavement surface. This paper presents acquisition, processing and interpretation of GPR data together with a statistical analysis of the results. In addition, typical GPR reflection patterns are presented and discussed. The results presented in this paper were obtained in a project supported by the Swiss Federal Roads Office (FEDRO).","PeriodicalId":212710,"journal":{"name":"Proceedings of the 15th International Conference on Ground Penetrating Radar","volume":"111 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125569382","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}
Pub Date : 2014-12-04DOI: 10.1109/ICGPR.2014.6970538
Yunhai Xia, Feng Yang, Xu Qiao, Xianlei Xu
In the detection of diseases on urban and rural roads and underground pipelines, we require to locate the position of disease or pipeline precisely and obtain relevant information as much as possible. The ground-penetrating radar system in this paper uses differential GPS positioning while recording, to obtain precise location of the disease. It uses high-precision camera systems to collect information on road conditions and reasonably explain the causes of the roadbed disease. Besides, it uses inertial measurement unit to obtain three-axis attitude angles of the equipment timely, which is convenient to locate the survey line inflection point. Through developing a powerful data processing and information extraction software system, it makes use of the collected data more efficiently. The actual experimental results show the geological radar system superiority in the application in highway quality testing.
{"title":"Ground penetrating radar system applied in the underground concealed object detection","authors":"Yunhai Xia, Feng Yang, Xu Qiao, Xianlei Xu","doi":"10.1109/ICGPR.2014.6970538","DOIUrl":"https://doi.org/10.1109/ICGPR.2014.6970538","url":null,"abstract":"In the detection of diseases on urban and rural roads and underground pipelines, we require to locate the position of disease or pipeline precisely and obtain relevant information as much as possible. The ground-penetrating radar system in this paper uses differential GPS positioning while recording, to obtain precise location of the disease. It uses high-precision camera systems to collect information on road conditions and reasonably explain the causes of the roadbed disease. Besides, it uses inertial measurement unit to obtain three-axis attitude angles of the equipment timely, which is convenient to locate the survey line inflection point. Through developing a powerful data processing and information extraction software system, it makes use of the collected data more efficiently. The actual experimental results show the geological radar system superiority in the application in highway quality testing.","PeriodicalId":212710,"journal":{"name":"Proceedings of the 15th International Conference on Ground Penetrating Radar","volume":"90 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127041872","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：