Recognizing the importance of quantitative estimates of GPR velocities, we have implemented several standard approaches as public domain software. A field observation that a rainfall event of 3.5 cm was associated with a decrease in the velocity of a shallow reflected phase from 0.104 to 0.085 m/ns, along with antecedent literature on the effects of soil water on GPR velocities, underscored the potential hydrological applications of such results. The algorithms we favor are robust in implementation, provide accurate results, yet are based on methodologies readily grasped by non-specialists and beginning students. Some applications involve such housekeeping elements as format conversion; filtering; gain options; and resampling using FFT interpolation. More useful to the general user are analysis packages for research and teaching: NMO/LMO velocity scans; time-base stretching; event picking; windowed scaling; optimal stacking; and cross-correlation analysis. Testing our procedures on an air wave phase, its velocity from zero-break picks was 0.271 m/ns, and from threshold-break picks was 0.284 m/ns. These are inconsistent and biased low. However, a cross-correlation procedure with an optimized native wavelet provided an estimate of 0.304 m/ns, much closer to the expected value. Such routine checks corroborate the accuracy of particular procedures, and identify potential timing problems.
{"title":"Better time picks=better travel times=better velocities: progress in developing public-domain software","authors":"J. Hermance, Rabi N. Bohidar","doi":"10.1117/12.462303","DOIUrl":"https://doi.org/10.1117/12.462303","url":null,"abstract":"Recognizing the importance of quantitative estimates of GPR velocities, we have implemented several standard approaches as public domain software. A field observation that a rainfall event of 3.5 cm was associated with a decrease in the velocity of a shallow reflected phase from 0.104 to 0.085 m/ns, along with antecedent literature on the effects of soil water on GPR velocities, underscored the potential hydrological applications of such results. The algorithms we favor are robust in implementation, provide accurate results, yet are based on methodologies readily grasped by non-specialists and beginning students. Some applications involve such housekeeping elements as format conversion; filtering; gain options; and resampling using FFT interpolation. More useful to the general user are analysis packages for research and teaching: NMO/LMO velocity scans; time-base stretching; event picking; windowed scaling; optimal stacking; and cross-correlation analysis. Testing our procedures on an air wave phase, its velocity from zero-break picks was 0.271 m/ns, and from threshold-break picks was 0.284 m/ns. These are inconsistent and biased low. However, a cross-correlation procedure with an optimized native wavelet provided an estimate of 0.304 m/ns, much closer to the expected value. Such routine checks corroborate the accuracy of particular procedures, and identify potential timing problems.","PeriodicalId":256772,"journal":{"name":"International Conference on Ground Penetrating Radar","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125067769","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}
This paper analyzes the early-time radar response of buried penetrable targets such as plastic landmines. The Born approximation is used to derive simple analytical expressions relating target and soil properties to the early-time response. Understanding these dependencies is crucial for target identification under varying soil conditions. The derived expressions include the transfer function and the impulse response of a penetrable target embedded in an unbounded homogeneous lossy medium and illuminated by a uniform plane wave. Using a truncated circular cylinder having the dimensions of a PMA-3 mine as an example, the early time responses predicted by the Born approximation are compared against responses obtained by three-dimensional finite-difference time-domain (FDTD) simulations. The results demonstrate that with the Born approximation it is possible to predict the general shape of the target response, i.e. the number of amplitude peaks, as well as the amplitudes of those peaks that relate to backscatter from the top of the example target. To improve the fit between the predicted and simulated responses, two phenomenologically motivated modifications to the early-time response expressions are proposed. The modified expressions are able to accurately predict not just the general shape of the early-time response, but also the influence of the host medium conductivity on the target impulse response.
{"title":"Radar response approximations for buried plastic landmines","authors":"F. Roth, P. van Genderen, M. Verhaegen","doi":"10.1117/12.462309","DOIUrl":"https://doi.org/10.1117/12.462309","url":null,"abstract":"This paper analyzes the early-time radar response of buried penetrable targets such as plastic landmines. The Born approximation is used to derive simple analytical expressions relating target and soil properties to the early-time response. Understanding these dependencies is crucial for target identification under varying soil conditions. The derived expressions include the transfer function and the impulse response of a penetrable target embedded in an unbounded homogeneous lossy medium and illuminated by a uniform plane wave. Using a truncated circular cylinder having the dimensions of a PMA-3 mine as an example, the early time responses predicted by the Born approximation are compared against responses obtained by three-dimensional finite-difference time-domain (FDTD) simulations. The results demonstrate that with the Born approximation it is possible to predict the general shape of the target response, i.e. the number of amplitude peaks, as well as the amplitudes of those peaks that relate to backscatter from the top of the example target. To improve the fit between the predicted and simulated responses, two phenomenologically motivated modifications to the early-time response expressions are proposed. The modified expressions are able to accurately predict not just the general shape of the early-time response, but also the influence of the host medium conductivity on the target impulse response.","PeriodicalId":256772,"journal":{"name":"International Conference on Ground Penetrating Radar","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131254905","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}
In this paper, we demonstrate three-dimensional estimation of target positions with borehole radar in single borehole. We developed array type borehole radar having four dipole antennas with optical modulators. Experiment at a model site was done using the developed radar system. In the site, one borehole, in which there is no fluid, and one cave exist. Receiving dipole antennas and a transmitting antenna are set in a single borehole. The 3-D MUSIC algorithm modified for array type radar in a borehole is applied to the measured data to estimate location of the cave. 3-D estimation results from the experiments were reasonable. In the estimation, Method of Moment (MoM) was used to model the antennas in a borehole. Green's function used in MoM was modified to include influence of cylindrical boundary around antennas in a borehole. Finally, we did experiments in granite, where boreholes are filled with fresh water. Cross-hole measurement was carried out to investigate characteristic of the dipole array in a water-filled borehole. Cross-spectrum analysis was adopted to obtained data, and we found that the experimental results give fairly good agreement with the theoretical results. This implies that the experimental results are accurate enough for estimation of azimuth of arrival waves, even if the antennas are in a water-filled borehole.
{"title":"3D estimation of target positions with borehole radar using e-field sensor array","authors":"S. Ebihara, Motoyuki Sato","doi":"10.1117/12.462210","DOIUrl":"https://doi.org/10.1117/12.462210","url":null,"abstract":"In this paper, we demonstrate three-dimensional estimation of target positions with borehole radar in single borehole. We developed array type borehole radar having four dipole antennas with optical modulators. Experiment at a model site was done using the developed radar system. In the site, one borehole, in which there is no fluid, and one cave exist. Receiving dipole antennas and a transmitting antenna are set in a single borehole. The 3-D MUSIC algorithm modified for array type radar in a borehole is applied to the measured data to estimate location of the cave. 3-D estimation results from the experiments were reasonable. In the estimation, Method of Moment (MoM) was used to model the antennas in a borehole. Green's function used in MoM was modified to include influence of cylindrical boundary around antennas in a borehole. Finally, we did experiments in granite, where boreholes are filled with fresh water. Cross-hole measurement was carried out to investigate characteristic of the dipole array in a water-filled borehole. Cross-spectrum analysis was adopted to obtained data, and we found that the experimental results give fairly good agreement with the theoretical results. This implies that the experimental results are accurate enough for estimation of azimuth of arrival waves, even if the antennas are in a water-filled borehole.","PeriodicalId":256772,"journal":{"name":"International Conference on Ground Penetrating Radar","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114339140","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}
V. Chapursky, S. Ivashov, V. Razevig, A. Sheyko, I. Vasilyev
In this paper the mathematical models and results on processing the experimental single-frequency microwave holograms received by scanning subsurface radar with sine wave signal are submitted. The holograms reconstruction method with the use of support functions, which take into account the near field of the aperture antenna with round cylindrical waveguide, is analysed. The models consider both known and unknown phase shift of the signal reflected from the point object. It is theoretically and experimentally shown that single- frequency holograms reconstruction allows to estimate depth of shallowly buried objects and improve the resolution on the probing surface with the growth of objects depths.
{"title":"Microwave hologram reconstruction for the RASCAN-type subsurface radar","authors":"V. Chapursky, S. Ivashov, V. Razevig, A. Sheyko, I. Vasilyev","doi":"10.1117/12.462280","DOIUrl":"https://doi.org/10.1117/12.462280","url":null,"abstract":"In this paper the mathematical models and results on processing the experimental single-frequency microwave holograms received by scanning subsurface radar with sine wave signal are submitted. The holograms reconstruction method with the use of support functions, which take into account the near field of the aperture antenna with round cylindrical waveguide, is analysed. The models consider both known and unknown phase shift of the signal reflected from the point object. It is theoretically and experimentally shown that single- frequency holograms reconstruction allows to estimate depth of shallowly buried objects and improve the resolution on the probing surface with the growth of objects depths.","PeriodicalId":256772,"journal":{"name":"International Conference on Ground Penetrating Radar","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116209189","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}
This paper illustrates IDS dedicated tools for the high resolution inspection of walls and structures. In particular is presented here a novel Ground Penetrating Radar system based upon an array of four IDS/TR 1600 antennae, capable to acquire up to seven channels at the same time. After a brief system overview, is described the theory and are reported the results of measurements and calculations performed to obtain the transfer function of each IDS 1.6 GHz antenna. Then are reported the results of field test carried out in the Salone dei Cinquecento, Palazzo Vecchio, Florence.
{"title":"Novel GPR system for high-resolution inspection of walls and structures","authors":"A. Sarri, G. Manacorda, M. Miniati","doi":"10.1117/12.462297","DOIUrl":"https://doi.org/10.1117/12.462297","url":null,"abstract":"This paper illustrates IDS dedicated tools for the high resolution inspection of walls and structures. In particular is presented here a novel Ground Penetrating Radar system based upon an array of four IDS/TR 1600 antennae, capable to acquire up to seven channels at the same time. After a brief system overview, is described the theory and are reported the results of measurements and calculations performed to obtain the transfer function of each IDS 1.6 GHz antenna. Then are reported the results of field test carried out in the Salone dei Cinquecento, Palazzo Vecchio, Florence.","PeriodicalId":256772,"journal":{"name":"International Conference on Ground Penetrating Radar","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133927683","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}
Three-dimensional modeling of Ground-Penetrating-Radar (GPR) surveys is increasing in popularity and demand. Combining GPR data with other georeferenced data using Global Positioning Systems (GPS) and Geographic Information Systems (GIS) would allow for more detailed and efficient site analysis and planning. Integrating GPR and GPS data into a geographic information system (GIS) has not been investigated in Florida. Thus, the objectives ofthis research are to (i) identify subsurface soil horizons using GPR, (ii) create a three-dimensional (3D) subsurface model based on imported GPR data, and (iii) develop a procedure to import GPR data into a GIS. The soils investigated are located in Marion County, Florida, and are characterized by Pleistocene-age sands over the clayey, marine deposited Miocene-age Hawthorn Formation, which drapes the Eocene-age Ocala Limestone. GPR transects of different lengths and spacing were collected and georeferenced using GPS to determine the subsurface variation of the Hawthorn Formation and location of karstic features. The GPR and GPS information was incorporated into ArcView and ArcGIS software. The information generated by integrating GPR, GIS, and GPR may assist researchers in determining best management practices including experimental plot placement, irrigation management, fertilizer treatments, and pesticides applications.
{"title":"Integration of ground-penetrating radar data, global positioning systems, and geographic information systems to create three-dimensional soil models","authors":"M. Tischler, M. Collins, S. Grunwald","doi":"10.1117/12.462302","DOIUrl":"https://doi.org/10.1117/12.462302","url":null,"abstract":"Three-dimensional modeling of Ground-Penetrating-Radar (GPR) surveys is increasing in popularity and demand. Combining GPR data with other georeferenced data using Global Positioning Systems (GPS) and Geographic Information Systems (GIS) would allow for more detailed and efficient site analysis and planning. Integrating GPR and GPS data into a geographic information system (GIS) has not been investigated in Florida. Thus, the objectives ofthis research are to (i) identify subsurface soil horizons using GPR, (ii) create a three-dimensional (3D) subsurface model based on imported GPR data, and (iii) develop a procedure to import GPR data into a GIS. The soils investigated are located in Marion County, Florida, and are characterized by Pleistocene-age sands over the clayey, marine deposited Miocene-age Hawthorn Formation, which drapes the Eocene-age Ocala Limestone. GPR transects of different lengths and spacing were collected and georeferenced using GPS to determine the subsurface variation of the Hawthorn Formation and location of karstic features. The GPR and GPS information was incorporated into ArcView and ArcGIS software. The information generated by integrating GPR, GIS, and GPR may assist researchers in determining best management practices including experimental plot placement, irrigation management, fertilizer treatments, and pesticides applications.","PeriodicalId":256772,"journal":{"name":"International Conference on Ground Penetrating Radar","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130594519","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}
One of the most crucial problem in roads rehabilitation regards the pavement damage. Usually it is easy to localize the damage, but it is always difficult to identify the causes. The rehabilitation can be compromised, if the cause is not removed. The GPR technique is used by many Agencies involved in roads management. It is nondestructive and it is promising for soil characteristics interpretation, such as moisture or density. A classification of pavement damage, based on GPR analysis, is already performed and experimentally validated. The causes of damage are often referable to water intrusion in subgrade or clay intrusion in sandy subgrade. This is why we principally investigate how the moisture and the soil density influence the dielectric constant. The outcomes of a laboratory experimental survey are here discussed. Different soils have been considered. The GPR responses of each soil have been investigated, considering different moistures. The dielectric properties are highly correlated with the water content and the water status in soil. A significant correlation between dielectric properties and soil density is shown; this correlation is not so relevant as the previous. Any generalization is not reliable, but the study proves that the GPR evaluation of subgrade characteristics is possible.
{"title":"GPR experimental evaluation of subgrade soil characteristics for rehabilitation of roads","authors":"A. Benedetto, F. Benedetto","doi":"10.1117/12.462221","DOIUrl":"https://doi.org/10.1117/12.462221","url":null,"abstract":"One of the most crucial problem in roads rehabilitation regards the pavement damage. Usually it is easy to localize the damage, but it is always difficult to identify the causes. The rehabilitation can be compromised, if the cause is not removed. The GPR technique is used by many Agencies involved in roads management. It is nondestructive and it is promising for soil characteristics interpretation, such as moisture or density. A classification of pavement damage, based on GPR analysis, is already performed and experimentally validated. The causes of damage are often referable to water intrusion in subgrade or clay intrusion in sandy subgrade. This is why we principally investigate how the moisture and the soil density influence the dielectric constant. The outcomes of a laboratory experimental survey are here discussed. Different soils have been considered. The GPR responses of each soil have been investigated, considering different moistures. The dielectric properties are highly correlated with the water content and the water status in soil. A significant correlation between dielectric properties and soil density is shown; this correlation is not so relevant as the previous. Any generalization is not reliable, but the study proves that the GPR evaluation of subgrade characteristics is possible.","PeriodicalId":256772,"journal":{"name":"International Conference on Ground Penetrating Radar","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123846044","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}
Plane- and cylindrical-wave expansions are used to calculate the scattered electromagnetic field from a buried circular cylinder illuminated by an arbitrary antenna. With the expressions cast in a special form, the fast Fourier transform (FFT) can be used to efficiently calculate the scattered fields for fixed-offset GPR configurations.
{"title":"Efficient calculation of scattering from a buried circular cylinder","authors":"T. Hansen, P. Meincke","doi":"10.1117/12.462284","DOIUrl":"https://doi.org/10.1117/12.462284","url":null,"abstract":"Plane- and cylindrical-wave expansions are used to calculate the scattered electromagnetic field from a buried circular cylinder illuminated by an arbitrary antenna. With the expressions cast in a special form, the fast Fourier transform (FFT) can be used to efficiently calculate the scattered fields for fixed-offset GPR configurations.","PeriodicalId":256772,"journal":{"name":"International Conference on Ground Penetrating Radar","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127820194","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}
Paula L. F. da Rocha, Marcelo M. dos Anjos, C. D. de Abreu, H. Lorenzo, Adriano Caranassos, Rinaldo Marques
This paper presents a geophysical survey, which is being carried out with the use of the Ground Penetrating Radar (GPR) in an ornamental rock quarry located at Santo Antonio de Padua area, northwest of Rio de Janeiro State, Brazil. The quarry is settled in a milonitic rock belt. It is exploited the "olho de pombo" rock, which is in commercial demand, in Brazil and abroad. The purpose of the investigation is to test the applicability of the GPR technique in order to determine the thickness of the sterile material, and the fractures within the rock massif from where the rock blocks are taken. However it will be discussed the results of two radargrams obtained on the rock without altered cap rock The study is developed with the partnership of the Centro de Tecnologia (Mineral Technology Center - CETEM), which has a great experience in deals with ornamental rock research. The acquired data were processed with the use of the software GRADIX® (version 1 . 1 1 — Interpex) in order to enhance the anomalies and the stratigraphy it was generated originated sections, with average depth of 20 meters. In the surveys it was utilized 100 MHz frequency antennae. It is intended to build a work methodology for the local mining operator in order to contribute to reduce the environmental impact problems, which in general occur within this kind of activity. It was possible to identify the fractures and also the weathering cover thickness. Presently, the requirements of govemmental institutions, the environmental impact caused by ornamental rock mining, occupy increasing distinction within mineral exploiting industry. The survey presented higer quality results.
本文介绍了利用探地雷达(GPR)在巴西里约热内卢州西北部Santo Antonio de Padua地区的一个观赏性采石场进行的地球物理调查。采石场坐落在百万年岩石带中。它被开采为“olho de pombo”岩石，在巴西和国外都有商业需求。调查的目的是测试探地雷达技术的适用性，以确定无菌材料的厚度，以及岩石块体内部的裂缝。然而，本文将讨论在未改变盖层的岩石上获得的两个雷达图的结果。该研究是与Centro de tecologia(矿物技术中心- CETEM)合作开展的，该中心在处理观赏岩石研究方面具有丰富的经验。采集的数据使用软件GRADIX®(版本1)进行处理。为了增强异常和地层特征，在该区建立了平均深度为20米的原始剖面。在调查中使用了100兆赫频率天线。它的目的是为当地采矿经营者建立一种工作方法，以便有助于减少在这类活动中通常发生的环境影响问题。可以识别裂缝和风化盖层厚度。目前，政府机构的要求和观赏岩开采对环境的影响在矿产开采行业中日益引起重视。调查结果的质量更高。
{"title":"Application of GPR to ornamental rock quarry","authors":"Paula L. F. da Rocha, Marcelo M. dos Anjos, C. D. de Abreu, H. Lorenzo, Adriano Caranassos, Rinaldo Marques","doi":"10.1117/12.462278","DOIUrl":"https://doi.org/10.1117/12.462278","url":null,"abstract":"This paper presents a geophysical survey, which is being carried out with the use of the Ground Penetrating Radar (GPR) in an ornamental rock quarry located at Santo Antonio de Padua area, northwest of Rio de Janeiro State, Brazil. The quarry is settled in a milonitic rock belt. It is exploited the \"olho de pombo\" rock, which is in commercial demand, in Brazil and abroad. The purpose of the investigation is to test the applicability of the GPR technique in order to determine the thickness of the sterile material, and the fractures within the rock massif from where the rock blocks are taken. However it will be discussed the results of two radargrams obtained on the rock without altered cap rock The study is developed with the partnership of the Centro de Tecnologia (Mineral Technology Center - CETEM), which has a great experience in deals with ornamental rock research. The acquired data were processed with the use of the software GRADIX® (version 1 . 1 1 — Interpex) in order to enhance the anomalies and the stratigraphy it was generated originated sections, with average depth of 20 meters. In the surveys it was utilized 100 MHz frequency antennae. It is intended to build a work methodology for the local mining operator in order to contribute to reduce the environmental impact problems, which in general occur within this kind of activity. It was possible to identify the fractures and also the weathering cover thickness. Presently, the requirements of govemmental institutions, the environmental impact caused by ornamental rock mining, occupy increasing distinction within mineral exploiting industry. The survey presented higer quality results.","PeriodicalId":256772,"journal":{"name":"International Conference on Ground Penetrating Radar","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120952832","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}
Barcombe Roman Villa, a site under threat of destruction from ploughing, has been investigated by use of resistivity, field walking and excavation. GPR survey was added to these techniques and a comparison is made between the composite picture provided by the former and time slices derived from the latter.
Barcombe Roman Villa是一个受到耕地破坏威胁的遗址，通过电阻率法、野外行走法和挖掘法对其进行了调查。在这些技术中加入了探地雷达测量，并将前者提供的合成图像与后者获得的时间片进行了比较。
{"title":"Barcombe Roman Villa: an exercise in GPR time slicing and comparative geophysics","authors":"E. Utsi, A. Alani","doi":"10.1117/12.462204","DOIUrl":"https://doi.org/10.1117/12.462204","url":null,"abstract":"Barcombe Roman Villa, a site under threat of destruction from ploughing, has been investigated by use of resistivity, field walking and excavation. GPR survey was added to these techniques and a comparison is made between the composite picture provided by the former and time slices derived from the latter.","PeriodicalId":256772,"journal":{"name":"International Conference on Ground Penetrating Radar","volume":"87 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2002-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115842476","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}
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