Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 159 for “"Ground-penetrating Radar"”.
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The effects of orientation on ground penetrating radar
… discusses how changes in the orientation of a Ground Penetrating Radar's receiver with respect to its transmitter can affect the detection of radar pulses by the receiver. The orientation changes discussed in this paper are elevating the receiver, rotating the receiver in the surface plane, …
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Nondestructive evaluation of wooden logs using ground penetrating radar
… scanning of logs using techniques such as Ground Penetrating Radar (GPR) prior to sawing can greatly increase the productivity and yield of high value lumber. Currently GPR has been widely used for civil engineering applications for nondestructive testing of bridges and highways. GPR is …
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Ground penetrating radar investigations in Upper Kama potash mines
… and state of the rock mass surrounding underground openings in the potash mines is critically important for safe mining, planning the methods of extraction of an orebody, and preventing the influx of ground water. Continuous common offset ground penetrating radar (GPR) data were acquired in …
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A spatial display for Ground-Penetrating Radar change detection
Ground-Penetrating Radar (GPR) enables the exploration and mapping of subterranean volumes for applications such as construction, humanitarian demining, archeology, and environmental science. In each of these applications, special signal processing pipelines have been developed to reduce noise and …
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High Resolution Imaging Ground Penetrating Radar Design and Simulation
… of a microwave band, high resolution imaging ground penetrating radar. A conceptual explanation is given on the mechanics of wave-based imaging, followed by the governing radar equations. The performance specifications for the imaging system are given as inputs to the radar equations, which …
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Coarse Root Biomass and Architecture: Applications of Ground Penetrating Radar
<p>The effectiveness of ground penetrating radar (GPR) to identify and quantify coarse roots was tested in a mixed-oak forest in Southeastern Virginia using experimental pits and locally excavated root segments. GPR was found to be highly dependent on low soil moisture levels as it is unable to …
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Wire detection using ground penetrating radar using image processing techniques
… detection using various techniques applied to Ground Penetrating Radar (GPR) images. In this study, a step-frequency GPR with a co-pole configuration was used to collect data. The first approach proposes the use of Hough Transform (HT) to detect surface wires. The collected data is processed by …
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Ground penetrating radar characterization of geologic structure beneath the Aberjona wetland
Ground penetrating radar (GPR) surveys are performed to determine geologic structure and to assist in the characterization and eventual modeling of ground water flow beneath the Well-H region of the Aberjona River in Woburn, Massachusetts. Even though cone penetrometer and coring studies provide …
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Development of algorithms for asphalt pavement compaction monitoring utilizing ground penetrating radar
… This study proposes a technique based on ground penetrating radar (GPR) for monitoring the density of asphalt pavement during compaction continuously, non-destructively, and in real time. The utmost challenge in developing this technique is to eliminate the effect of surface moisture, …
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RF hardware design of a stepped frequency continuous wave ground penetrating radar
Research into stepped frequency continuous wave ground penetrating radar (SFCW GPR) at UCT has been carried out since 1990. A first generation system comprising of Hewlett-Packard test equipment controlled by a PC was assembled. Cavity-backed log spiral antennas were designed and built by the …
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Implementing a ground penetrating radar user interface in system-on-chip technology
Ground penetrating radar technology is used to provide a fast and accurate method for target location compare to other geophysical sensing techniques. An existing ground penetrating radar system developed by Open Fuel (Pty) Ltd is used in the detection and avoidance of obstacles for a sub-surface …
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Development of Ground Penetrating Radar Signal Modeling and Implementation for Transportation Infrastructure
Ground penetrating radar (GPR) technology has been used for the past 20 years for a variety of applications to assess transportation infrastructure. However, the main issue after all these years remains: "How well does GPR work and under what conditions?" Results show that GPR works well for some …
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Development of Data Analysis Algorithms for Interpretation of Ground Penetrating Radar Data
… using other nondestructive techniques, such as Ground Penetrating Radar (GPR). The use of GPR as a nondestructive pavement assessment tool is limited mainly due to the difficulty of GPR data interpretation, which requires experienced operators. Therefore, GPR results are usually subjective and …
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Using Ground Penetrating Radar Signal Reflection to Model a Highly Transmissive Bedrock Aquifer
… of numerical modeling software to characterize groundwater contaminant fate and transport requires an understanding of the distribution of hydraulic properties of the aquifer. As the complexity of this distribution increases, a more sophisticated understanding is required. Modeling contaminant …
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