Remote Detection of Unexploded Ordnance-Ground Penetrating Radar

1992 ◽  
Author(s):  
GEO-CENTERS INC NEWTON CENTRE MA
Keyword(s):  
Ground Penetrating Radar ◽  
Remote Detection ◽  
Unexploded Ordnance ◽  
Ground Penetrating

TECHNOLOGIES FOR THE REMOTE DETECTION OF HYDROCARBONS IN THE SUBSURFACE

1989 ◽  
Vol 1989 (1) ◽  
pp. 13-17
Author(s):  
Mike McCarthy ◽  
Barbara J. Denahan ◽  
John R. Herbert
Keyword(s):  
Cost Effectiveness ◽  
Ground Penetrating Radar ◽  
Storage Systems ◽  
Research Effort ◽  
Soil Gas ◽  
Remote Detection ◽  
Detection Techniques ◽  
Factors Associated ◽  
Geophysical Techniques ◽  
Ground Penetrating

ABSTRACT An increase in the frequency of hydrogeologic assessments in response to hydrocarbon losses from storage systems has prompted this research effort to evaluate economical and effective remote detection techniques. Two general technology groups were evaluated for their ability to detect the contaminant as well as their cost effectiveness. These technologies include soil gas and geophysical techniques. The soil gas techniques evaluated included active and passive procedures. The geophysical technologies which were evaluated on the basis of the same criteria included electromagnetic surveys, resistivity, and ground penetrating radar. This paper describes the interference factors associated with each technique and the relative costs of the technologies given the same set of assumptions.

Unexploded Ordnance Detection Using Region of Interest in Range Domain of Ground Penetrating Radar

2007 ◽  
Vol 11 (10) ◽  
pp. 1184-1188 ◽  
Author(s):  
Nipon Theera-Umpon ◽  
Keyword(s):  
Ground Penetrating Radar ◽  
Operating Cost ◽  
Region Of Interest ◽  
Roc Curves ◽  
Land Mines ◽  
Unexploded Ordnance ◽  
Data Set ◽  
The Ohio State University ◽  
A New Technique ◽  
Ground Penetrating

Buried unexploded ordnance (UXO) and land mines are grave threats to civilians who go back to contaminated areas in the postwar period. In this research, we propose a new technique to detect UXOs from ground penetrating radar (GPR) signals. The technique is based on an energy-based feature of the region of interest (ROI). A ROI selection technique in range domain is also proposed. The proposed method was tested with the UXO data collected by Battelle company and the Ohio State University. This data set was made available to public through the Unexploded Ordnance Center of Excellence (UXOCOE), Department of Defense, U.S.A. The results evaluated in terms of Receiver Operating Characteristic (ROC) curves suggest that our proposed technique performs very well. Comparisons to a traditional detection technique and our previously proposed technique are conducted. The improvement by the proposed technique does not only speed up the UXO/land mine clearance operation, but also save operating cost.

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.

Deteksi Bentuk Objek Bawah Tanah Menggunakan Pengolahan Citra B-Scan pada Ground Penetrating Radar (GPR)

2017 ◽  
Vol 3 (1) ◽  
pp. 73-83
Author(s):  
Rahmayati Alindra ◽  
Heroe Wijanto ◽  
Koredianto Usman
Keyword(s):  
Signal Processing ◽  
Ground Penetrating Radar ◽  
Post Processing ◽  
Data Survey ◽  
Ground Penetrating

Ground Penetrating Radar (GPR) adalah salah satu jenis radar yang digunakan untuk menyelidiki kondisi di bawah permukaan tanah tanpa harus menggali dan merusak tanah. Sistem GPR terdiri atas pengirim (transmitter), yaitu antena yang terhubung ke generator sinyal dan bagian penerima (receiver), yaitu antena yang terhubung ke LNA dan ADC yang kemudian terhubung ke unit pengolahan data hasil survey serta display sebagai tampilan output-nya dan post  processing untuk alat bantu mendapatkan informasi mengenai suatu objek. GPR bekerja dengan cara memancarkan gelombang elektromagnetik ke dalam tanah dan menerima sinyal yang dipantulkan oleh objek-objek di bawah permukaan tanah. Sinyal yang diterima kemudian diolah pada bagian signal processing dengan tujuan untuk menghasilkan gambaran kondisi di bawah permukaan tanah yang dapat dengan mudah dibaca dan diinterpretasikan oleh user. Signal processing sendiri terdiri dari beberapa tahap yaitu A-Scan yang meliputi perbaikan sinyal dan pendektesian objek satu dimensi, B-Scan untuk pemrosesan data dua dimensi  dan C-Scan untuk pemrosesan data tiga dimensi. Metode yang digunakan pada pemrosesan B-Scan salah satunya adalah dengan  teknik pemrosesan citra. Dengan pemrosesan citra, data survey B-scan diolah untuk didapatkan informasi mengenai objek. Pada penelitian ini, diterapkan teori gradien garis pada pemrosesan citra B-scan untuk menentukan bentuk dua dimensi dari objek bawah tanah yaitu persegi, segitiga atau lingkaran. 

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