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Influence of antenna polarization and dielectric contrast on ground penetrating radar signals from non- metal pipe

Ground penetrating radar (GPR) usage in detecting subsurface non-metal objects is investigated as there are many factors which can affect the strength of GPR signals such as the frequency of GPR antenna, the size, shape and the dielectric properties of the objects as well as the dielectric propertie...

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Main Author: Abdul Pattah, Nurul Fadzilah
Format: Thesis
Language:English
Published: 2017
Subjects:
QC Physics
Online Access:http://eprints.utm.my/id/eprint/81462/1/NurulFadzilahAbdulMFS2017.pdf
http://eprints.utm.my/id/eprint/81462/
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spelling my.utm.814622019-08-23T05:18:54Z http://eprints.utm.my/id/eprint/81462/ Influence of antenna polarization and dielectric contrast on ground penetrating radar signals from non- metal pipe Abdul Pattah, Nurul Fadzilah QC Physics Ground penetrating radar (GPR) usage in detecting subsurface non-metal objects is investigated as there are many factors which can affect the strength of GPR signals such as the frequency of GPR antenna, the size, shape and the dielectric properties of the objects as well as the dielectric properties of the soil. This study involves the detection of GPR signal from a polyvinyl chloride (PVC) pipe of 0.15m in diameter and buried at a fixed depth of 0.5m from the soil surface in a testbed. Data collections were made using 500MHz and 800MHz GPR antennas which were placed directly above the soil surface, and in perpendicular or parallel orientation to the buried PVC pipe. Dielectric properties of the soil and the pipe content were varied by changing the amount of water added to them respectively. The results were shown by graphs of peak to peak amplitude of the detected GPR signals versus the soil conditions characterizing the soil-pipe dielectric contrast. Regardless of the antenna orientations, it was found that stronger GPR signals were obtained using the 500MHz antenna compared to those obtained using the 800MHz antenna. In addition, no significant difference is observed in signal strength collected using the 500MHz antenna in both perpendicular and parallel orientations. The results also show that there is a gradual increase in signal strength with increasing soil-pipe dielectric contrast irrespective of the orientations of the antenna. As a conclusion, depending on the level of the dielectric contrast, it is always more favourable to use the 500MHz GPR antenna to detect the PVC pipe. 2017 Thesis NonPeerReviewed application/pdf en http://eprints.utm.my/id/eprint/81462/1/NurulFadzilahAbdulMFS2017.pdf Abdul Pattah, Nurul Fadzilah (2017) Influence of antenna polarization and dielectric contrast on ground penetrating radar signals from non- metal pipe. Masters thesis, Universiti Teknologi Malaysia. http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:124980
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
language English
topic QC Physics
spellingShingle QC Physics
Abdul Pattah, Nurul Fadzilah
Influence of antenna polarization and dielectric contrast on ground penetrating radar signals from non- metal pipe
description Ground penetrating radar (GPR) usage in detecting subsurface non-metal objects is investigated as there are many factors which can affect the strength of GPR signals such as the frequency of GPR antenna, the size, shape and the dielectric properties of the objects as well as the dielectric properties of the soil. This study involves the detection of GPR signal from a polyvinyl chloride (PVC) pipe of 0.15m in diameter and buried at a fixed depth of 0.5m from the soil surface in a testbed. Data collections were made using 500MHz and 800MHz GPR antennas which were placed directly above the soil surface, and in perpendicular or parallel orientation to the buried PVC pipe. Dielectric properties of the soil and the pipe content were varied by changing the amount of water added to them respectively. The results were shown by graphs of peak to peak amplitude of the detected GPR signals versus the soil conditions characterizing the soil-pipe dielectric contrast. Regardless of the antenna orientations, it was found that stronger GPR signals were obtained using the 500MHz antenna compared to those obtained using the 800MHz antenna. In addition, no significant difference is observed in signal strength collected using the 500MHz antenna in both perpendicular and parallel orientations. The results also show that there is a gradual increase in signal strength with increasing soil-pipe dielectric contrast irrespective of the orientations of the antenna. As a conclusion, depending on the level of the dielectric contrast, it is always more favourable to use the 500MHz GPR antenna to detect the PVC pipe.
format Thesis
author Abdul Pattah, Nurul Fadzilah
author_facet Abdul Pattah, Nurul Fadzilah
author_sort Abdul Pattah, Nurul Fadzilah
title Influence of antenna polarization and dielectric contrast on ground penetrating radar signals from non- metal pipe
title_short Influence of antenna polarization and dielectric contrast on ground penetrating radar signals from non- metal pipe
title_full Influence of antenna polarization and dielectric contrast on ground penetrating radar signals from non- metal pipe
title_fullStr Influence of antenna polarization and dielectric contrast on ground penetrating radar signals from non- metal pipe
title_full_unstemmed Influence of antenna polarization and dielectric contrast on ground penetrating radar signals from non- metal pipe
title_sort influence of antenna polarization and dielectric contrast on ground penetrating radar signals from non- metal pipe
publishDate 2017
url http://eprints.utm.my/id/eprint/81462/1/NurulFadzilahAbdulMFS2017.pdf
http://eprints.utm.my/id/eprint/81462/
http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:124980
_version_ 1643658717754818560
score 13.211869

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