搜索结果: 1-6 共查到“地球科学总论 GPR”相关记录6条 . 查询时间(0.071 秒)
基于归一化互相关成像条件的GPR逆时偏移成像
探地雷达 逆时偏移 归一化互相关成像条件 零时刻成像条件
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2019/3/7
针对基于零时刻成像条件的探地雷达(GPR)逆时偏移精度低、难以对复杂结构进行高精度成像的缺点，将归一化互相关成像条件应用于GPR叠前逆时偏移成像。从二维GPR电磁波方程出发，采用基于完全匹配层(PML)边界条件的时域有限单元法(FETD)模拟电磁波正向和逆向传播，采用归一化互相关成像条件获取叠前逆时偏移的偏移结果，将空间高通滤波用于压制互相关过程中产生的低频噪声，然后编制相应的GPR叠前逆时偏移程...
Interpretation of Dune Genesis from Sedimentogical Data and Ground Penetrating Radar (GPR) Signatures: A Case Study from Ashirmata Dune Field, Mandvi Beach, Gujarat, India
Coastal Dune Ashirmata Region Sedimentogical Analysis
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2013/3/11
The coastal dunes located near the Ashirmata region, south of Mandvi beach lies near the straight coast have been stud-ied by making use of sedimentological information and Ground Penetrating Radar (G...
Building damage caused by tree roots: laboratory experiments of GPR and ERT surveys
Building damage caused by tree roots laboratory experiments GPR ERT surveys
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2010/9/13
The root growth of trees close to buildings can cause directly or indirectly structural damages and the necessity arises of diagnostic tools to follow their time-spatial behaviour. In this framework, ...
ANN-based sub-surface monitoring technique exploiting electromagnetic features extracted by GPR signals
ANN-based sub-surface monitoring technique electromagnetic features GPR signals
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2010/1/28
In this work we consider the problem of determining the dielectric characteristics of sub-surface layers by means of GPR systems. In particular, a suitable electromagnetic feature (the RΓ parameter), ...
GPR based soil electromagnetic parameters determination for subsurface imaging
GPR soil electromagnetic parameters determination subsurface imaging
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2010/1/28
The problem of estimating the dielectric permittivity and the electric conductivity of the soil starting from GPR measurements is addressed. A new estimation procedure is proposed and checked against ...
Detection of metallic and plastic landmines using the GPR and 2-D resistivity techniques
Detection metallic and plastic landmines GPR 2-D resistivity techniques
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2009/12/30
Low and non-metallic landmines are one of the most difficult subsurface targets to be detected using several geophysical techniques. Ground penetrating radar (GPR) performance at different field sites...