A Novel Forward Model of Ground Penetrating Radar In The Far Field

Zhang, J. W.; Ve, Serebrovskiĭ; Guo, Ruifeng; Liu, X. F.; Fang, Guangyou

doi:10.1109/icgpr.2018.8441560

Cited by 1 publication

(3 citation statements)

References 16 publications

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“…According to the electromagnetic field theory, we can obtain the expression of the electric field generated in the x-direction after the electromagnetic wave radiated by the electric dipole in the x-direction has been reflected by the plane-layered medium [18,19].…”

Section: Radar System Modelingmentioning

confidence: 99%

“…In the far-field region, assuming that the electric field measured locally by the antenna tends to be a plane wave, we can model the radar in a single-station configuration by a linear system with a frequency-dependent transfer function [17]. Simplifying Figure 3, the received signal of the radar can be denoted as [16,[18][19][20]]…”

Section: Radar System Modelingmentioning

confidence: 99%

“…A series of digital processing methods have also been proposed, but the actual effect is insignificant. Lambot et al proposed a layered media model of GPR under far-field conditions, which can complete the compensation of the antenna effect, and they proved through experiments that the resolution of GPR could be improved after compensation for the antenna effect [16][17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A Real-Time Permittivity Estimation Method for Stepped-Frequency Ground-Penetrating Radar by Full-Waveform Inversion

Li,

Ye,

Kong

et al. 2023

Remote Sensing

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Ground-penetrating radar (GPR) has been widely used in estimating the permittivity of mediums. The radar echo amplitude method is an important method used by GPR in this estimation, the basic step of which is to deduce the magnitude of the permittivity according to the relationship between the reflection coefficient and the permittivity. Based on the basic principle of the radar echo amplitude method, this paper proposes a full-wave inversion real-time permittivity estimation method that can be used for stepped-frequency GPR (SFGPR), which offers high efficiency, accuracy, and generalization ability. The characteristics of this method are mainly reflected in the following four aspects: Using the SFGPR system and introducing a layered media detection model, we can complete waveform compensation optimization with high precision. The distance between the antenna and the surface of the reflective medium is extracted from the time domain waveform without manual measurement, avoiding human measurement errors. The inversion of the total reflection waveform at the required height works under the principle of an electromagnetic field, eliminating the need for repeated metal plate calibration experiments and improving work efficiency and waveform accuracy. In a continuous measurement line, the total reflection waveform inversion on each measurement point can be efficiently completed, and the change of permittivity on the measurement line can be obtained. To evaluate the feasibility of the proposed method, we performed experiments on a wall of known thickness, and the permittivity estimation was basically consistent with that of the dielectric probe, physical model calculation, and wall penetration. We also successfully applied this method to the dielectric property analysis of adobe samples. The results indicate that the proposed method can help grasp the condition of a measured medium, which can ensure the accuracy of detection and improve subsequent data processing efficiency.

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Section: Radar System Modelingmentioning

confidence: 99%