نتایج جستجو برای: d gpr modeled sections however

تعداد نتایج: 2240021  

Journal: :فیزیک زمین و فضا 0
ابوالقاسم کامکار روحانی دانشیار، دانشکده معدن، نفت و ژئوفیزیک، دانشگاه صنعتی شاهرود، شاهرود، ایران اسماعیل اسحقی دانش آموخته ژئوفیزیک، دانشکده معدن، نفت و ژئوفیزیک، دانشگاه صنعتی شاهرود، شاهرود، ایران علیرضا عرب امیری استادیار، دانشکده معدن، نفت و ژئوفیزیک، دانشگاه صنعتی شاهرود، شاهرود، ایران

ground penetrating radar (gpr) method as a high resolution non-destructive geophysical method is used for detection of shallow subsurface targets. this method is based on the transmission of electromagnetic waves inside the earth and recording the reflected waves from the subsurface. as the method uses high-frequency electromagnetic waves in the frequency ranges of 12.5 to 2500 mhz (called gpr ...

Journal: :IEEE Trans. Geoscience and Remote Sensing 2001
Levent Gürel Ugur Oguz

The versatility of the three-dimensional (3–D) finitedifference time-domain (FDTD) method to model arbitrarily inhomogeneous geometries is exploited to simulate realistic groundpenetrating radar (GPR) scenarios for the purpose of assisting the subsequent designs of high-performance GPR hardware and software. The buried targets are modeled by conducting and dielectric prisms and disks. The groun...

2013
Konstantin Markov Motofumi Iwata Tomoko Matsui

This paper describes the music emotion recognition system developed at the University of Aizu for the Emotion in Music task of the MediaEval’2013 benchmark evaluation campaign. A set of standard feature types provided by the Marsyas toolkit was used to parametrize each music clip. Arousal and valence are modeled separately using Gaussian Process regression (GPR). We compared performances of the...

2004
P. Meincke O. S. Kim H.-R. Lenler-Eriksen

A linear inversion scheme for microwave imaging of buried objects is presented in which arbitrary antennas are accounted for through their plane-wave transmitting and receiving spectra. INTRODUCTION Ground penetrating radar (GPR) is an efficient tool for microwave imaging of buried objects. Within the concept of diffraction tomography, as proposed by Devaney [1], several linear inversion scheme...

Journal: :IEEE Trans. Geoscience and Remote Sensing 2000
Levent Gürel Ugur Oguz

The finite-difference time-domain (FDTD) method is used to simulate three-dimensional (3-D) geometries of realistic ground-penetrating radar (GPR) scenarios. The radar unit is modeled with two transmitters and a receiver in order to cancel the direct signals emitted by the two transmitters at the receiver. The transmitting and receiving antennas are allowed to have arbitrary polarizations. Sing...

Journal: :IEEE Trans. Geoscience and Remote Sensing 2002
Ugur Oguz Levent Gürel

The finite-difference time-domain (FDTD) method is used to investigate the effects of highly lossy grounds and the frequency-band selection on ground-penetrating-radar (GPR) signals. The ground is modeled as a heterogeneous half space with arbitrary background permittivity and conductivity. The heterogeneities encompass both embedded scatterers and surface holes, which model the surface roughne...

Journal: :IEEE Trans. Geoscience and Remote Sensing 2000
Andria van der Merwe Inder J. Gupta

In this paper, a signal processing technique is developed to reduce clutter due to ground bounce in ground penetrating radar (GPR) measurements. This technique is especially useful when a GPR is used to detect subsurface antipersonnel mines. The GPR clutter is modeled using a simple parametric model. Buried mine and clutter contributions are separated through a pair of coupled iterative procedu...

2015
L. Sold M. Huss A. Eichler M. Schwikowski M. Hoelzle

The spatial representation of accumulation measurements is a major limitation for current glacier mass balance monitoring approaches. Here, we present a method for estimating annual accumulation rates on a temperate Alpine glacier based on the interpretation of internal reflection horizons (IRHs) in helicopter-borne ground-penetrating radar (GPR) data. For each individual GPR measurement, the s...

Journal: :Journal of Electrical and Computer Engineering 2023

In this paper, an intelligent integrated approach is proposed to control the reactive power and restore voltage balance in a three-phase system using particle swarm optimization (PSO), Gaussian process regression (GPR), support vector machine (SVM). The PSO algorithm used offline mode determine optimal set of firing angles for thyristor-controlled-reactor (TCR) compensator according smallest fi...

2007
S. Colagrande M. Tallini D. Ranalli M. Scozzafava

Structural degradation of road pavements has a considerable impact on traffic safety. Roadway surface defects or discontinuities make driving uncomfortable and increase chances of accidents. GPR is an effective and non-destructive technique to discover and trace the causes of road pavement damages so characterizing road integrity. The paper shows the findings of a GPR survey carried out on degr...

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