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University of Birmingham (1998)

Ground probing radar application for detection of ground water in arid regions

Elkhetali, S.I

Titre : Ground probing radar application for detection of ground water in arid regions

Auteur : Elkhetali, S.I

Université de soutenance : University of Birmingham

Grade : Doctor of Philosophy (PhD) 1998

Résumé
This thesis addresses the application of ground probing radar (GPR) to detection of groundwater in a desert environment. The importance of groundwater in the desert is stressed and a brief background on desert hydrology is given before concentrating on the use of GPR.A study of how the environment affects the quality of the radar signal and image is established before addressing how to alleviate this environmental corruption. A GPR system based on the step frequency concept is proposed and its operation is investigated. Tests of signal processing techniques to improve the detectability of a weak signal in noise and interference are reported. Other techniques to obtain some useful information on the earth layers such as the depth of different layers and the electromagnetic propagation velocity are discussed. Simulated images from structures that have the potential of storing groundwater, including image corrupting effects such as defocusing and clutter due to rough interfaces between earth layers are given and focusing techniques to reduce these effects are considered. Automatic detection and classification by artificial neural networks is tried to classify geologic subterranean features for aiding and speeding the process and to overcome lack of experts on the field

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Page publiée le 31 janvier 2015, mise à jour le 19 octobre 2018