A New Short Pulse Generator for Ground Penetrating Radar

2007 ◽  
Author(s):  
Jian-Bin Wu ◽  
Mao Tian
Keyword(s):  
Ground Penetrating Radar ◽  
Pulse Generator ◽  
Short Pulse ◽  
Ground Penetrating

scholarly journals Automated method for buried object detecting using ground penetrating radar (GPR) survey

2019 ◽  
Vol 12 (23) ◽  
pp. 80-89
Author(s):  
Israa J. Muhsin
Keyword(s):  
Image Processing ◽  
Ground Penetrating Radar ◽  
Electromagnetic Waves ◽  
Short Pulse ◽  
Radio Spectrum ◽  
Buried Objects ◽  
Automated Method ◽  
Buried Object ◽  
Geophysical Technique ◽  
Ground Penetrating

  Ground Penetrating Radar (GPR) is a nondestructive geophysical technique that uses electromagnetic waves to evaluate subsurface information. A GPR unit emits a short pulse of electromagnetic energy and is able to determine the presence or absence of a target by examining the reflected energy from that pulse. GPR is geophysical approach that use band of the radio spectrum. In this research the function of GPR has been summarized as survey different buried objects such as (Iron, Plastic(PVC), Aluminum) in specified depth about (0.5m) using antenna of 250 MHZ, the response of the each object can be recognized as its shapes, this recognition have been performed using image processing such as filtering. Where different filters like (DC adjustment, triangular FIR, delete mean trace, FIR) have been applied on output image as well as the simulation of the soil and the buried objects layers have been obtained using GPR simulation program.

Analysis of ground penetrating radar data using hierarchical Markov Chain Monte Carlo simulation

2014 ◽  
Vol 41 (1) ◽  
pp. 9-16 ◽  
Author(s):  
Leslie Odartey Mills ◽  
Nii Attoh-Okine
Keyword(s):  
Monte Carlo ◽  
Markov Chain ◽  
Markov Chain Monte Carlo ◽  
Ground Penetrating Radar ◽  
Missing Values ◽  
Short Pulse ◽  
Radar Data ◽  
Statistical Estimates ◽  
Original Dataset ◽  
Ground Penetrating

Ground penetrating radar (GPR) is a geophysical method used in highway maintenance to determine subsurface conditions within the right-of-way. GPR operates by using short-pulse radiation of radio-frequency electromagnetic energy to record dissimilarities in electrical properties of subsurface materials. As such, GPR results are susceptible to the transmission frequency used and the inherent properties of different subsurface materials. Uncertainty due to these susceptibilities can lead to ambiguity in the interpretation of GPR data. To distinguish heterogeneity from uncertainty, this paper modeled GPR data on pavement layer thickness using Markov Chain Monte Carlo (MCMC) simulation. MCMC is able to model heterogeneity within a given dataset and was employed to estimate and predict layer thicknesses obtained from GPR data. Simulated results were consistent with field data and provided statistical estimates of missing values in the original dataset. This analysis will aid relevant stakeholders to verify and determine consistency in field GPR data.

REFLECTION COEFFICIENT OF AN ELECTROMAGNETIC WAVE IN CONDUCTIVE MEDIA

2018 ◽  
pp. 100-106
Author(s):  
M. S. Sudakova ◽  
M. L. Vladov ◽  
M. R. Sadurtdinov
Keyword(s):  
Reflection Coefficient ◽  
Ground Penetrating Radar ◽  
Electromagnetic Waves ◽  
Water Contamination ◽  
Survey Design ◽  
Direct And Inverse Problems ◽  
The Difference ◽  
Ground Penetrating ◽  
Ideal Dielectric

Within the ground penetrating radar bandwidth the medium is considered to be an ideal dielectric, which is not always true. Electromagnetic waves reflection coefficient conductivity dependence showed a significant role of the difference in conductivity in reflection strength. It was confirmed by physical modeling. Conductivity of geological media should be taken into account when solving direct and inverse problems, survey design planning, etc. Ground penetrating radar can be used to solve the problem of mapping of halocline or determine water contamination.

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