Simulation effect of polarization of targets on the Ground Penetrating Radar response

Mostapha, Aye Mint Mohamed; Alsharahi, Gamil; Driouach, Abdellah

doi:10.1109/wits.2017.7934662

Cited by 4 publications

(5 citation statements)

References 4 publications

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“…A bowtie antenna can be printed on a substrate with each arm placed on either the top or bottom of the substrate. Feeding of such a structure is done by designing suitable strip lines which are connected to a coaxial feed placed on one of the edges of the substrate [6].…”

Section: Bowtie Antennamentioning

confidence: 99%

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Evaluation of the Iron State in Humid Zones Using GPR with 1.6 GHz Bowtie Antenna

Rihab¹,

Es-saleh²,

Lakrit³

et al. 2022

J. Nano- Electron. Phys.

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This report offers a study of iron status in moist zones using a 1.6 GHz Ground Penetrating Radar (GPR). The latter is a geophysical prospecting tool that analyzes the propagation, refraction, and reflection of high-frequency electromagnetic (EM) waves (from 300 MHz to 2.3 GHz). To replicate GPR signals, we used the GPRMAX program, which allowed us to model the soil's electrical and magnetic properties as well as the GPR itself. Several models were created to replicate various geological situations. The simulation began with a rectangular block as the starting model. The first and second models are basic profiles that illustrate the propagation of an EM wave. The third model is used to investigate the propagation of EM waves (reflected waves) in dry and wet concrete in order to demonstrate the influence of moisture on EM waves. To simulate different properties of a dielectric medium, a set of models was built. We simulated several different physical media using a finite difference time domain (FDTD) approach, which is the method on which the scientific calculation code of the GPRMAX simulation program is based. When a radar signal propagates through an environment, the presence of hyperbolas indicates the presence of buried objects.

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Section: Bowtie Antennamentioning

confidence: 99%

“…In this work, only the 2D version of the program is used. It is based on the FDTD method applied to the time domain [6,11].…”

Section: Gprmax2d/3dmentioning

confidence: 99%

Evaluation of the Iron State in Humid Zones Using GPR with 1.6 GHz Bowtie Antenna

Rihab¹,

Es-saleh²,

Lakrit³

et al. 2022

J. Nano- Electron. Phys.

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“…Field data as well assynthetic data can be processed in two and three dimensions. In our case, we used the Reflexw 2D [14].…”

Section: Gpr Sir3000mentioning

confidence: 99%

“…GprMax is based on FDTD and is available free of charge for both academic and commercial use; it has been successfully employed in many situations. The tool can be downloaded from www.gprmax.org or by contacting the author [14].…”

Section: • Gprmax2dmentioning

confidence: 99%

Effect of the Variation in Humidity of the Medium on the GPR Radar Response

Mostapha

Alsharahi

Faize

et al. 2020

The 14th International Conference on Interdisciplinarity in Engineering—INTER-Eng 2020

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This work presents research on the influence of the variation in humidity of the medium on the Ground-penetrating radar GPR response. During this research, we used a GPR SIR 3000 system coupled with a 400 MHz frequency antenna, and GprMax and Reflexw software, which are based on the numerical method known as finite difference in time domain (FDTD). The results obtained (experimental and by simulation) have shown that the reflection force and the penetration depth of GPR waves are strongly related to the physical properties of the objects and the medium inspected. The increase in the conductivity of the inspected medium causes areduction inthe depth of the GPR waves, which causes the non-detection of objects.

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“…The received signal is ampli ed, and after the noise signal is removed, the data thus obtained is provided to the user after signal processing. However, high-power electromagnetic waves generated from ground-surface re ection 7 , re ection from a nearby metal surface 8 , intentional electromagnetic interference 9 , and naturally generated lightning electromagnetic pulses (EMPs) [10][11][12] may cause temporary or permanent damage to the system, especially at the receiver, because its function is to amplify a small signal [13][14][15][16][17] .…”

Section: Introductionmentioning

confidence: 99%

Plasma-discharge-integrated structure for microwave power limiter

Woo

Lee

2023

Preprint

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A slot structure was combined with a discharge electrode to limit incident high-power microwaves via the integration of plasma discharge. At the target resonating frequency of 9.45 GHz, the surface current was concentrated at an electrode, and the electric field was enhanced by the proposed design to lower the response power level of the incident signal. When a low-power signal is injected, plasma is not generated, and the incident wave travels without insertion loss. Double-stage slot structures were utilized to broaden the band-pass characteristics in the frequency domain, and the demonstrated plasma limiter exhibited an insertion loss of 1.01 dB at 9.45 GHz. The xenon gas pressure was optimized with the shortest distance of 100 µm between the upper and lower electrodes to reduce the discharge power of the plasma. In the case of a high-power signal input, as xenon-gas breakdown occurred, the transmitted signal was close to zero, and most of the high-power signal was reflected with a blocking efficiency of 40.55 dB.

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Simulation effect of polarization of targets on the Ground Penetrating Radar response

Cited by 4 publications

References 4 publications

Evaluation of the Iron State in Humid Zones Using GPR with 1.6 GHz Bowtie Antenna

Evaluation of the Iron State in Humid Zones Using GPR with 1.6 GHz Bowtie Antenna

Effect of the Variation in Humidity of the Medium on the GPR Radar Response

Plasma-discharge-integrated structure for microwave power limiter

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