New model for estimating the thickness and permittivity of subsurface layers from GPR data

Liu, C.R.; Li, J.; Gan, Xinhua; Xing, H.; Chen, Xuemin

doi:10.1049/ip-rsn:20020791

Cited by 13 publications

(10 citation statements)

References 3 publications

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“…In the new model [2], distance of transmitter and receiver affects on reflected ray path in multi-layer medium. The model is shown in Fig.1.…”

Section: Formulationmentioning

confidence: 99%

“…For function (2), T(x) is minimized when l x = and used in short offset case. The thickness of layer 2 can be derived by known T(x).…”

Section: Formulationmentioning

confidence: 99%

“…Geometry for searching the shortest ray path [2]. The shortest travel time along the reflected path is T-Q 1 -P-Q 2 -R. 2l is the space between transmitter and receiver (T-R).…”

Section: Formulationmentioning

confidence: 99%

“…Then, it travels along the surface with speed v 1 in medium 1 to receiver. GPR is placed in free space and the same value of x m is calculated by function (3) in new model [2]. From above analysis, the shortest time of reflection wave is equal to the value from the new model in [2].…”

Section: Formulationmentioning

confidence: 99%

“…However, the midpoint model is not suitable in calculation of long space between transmitter and receiver. Based on experiment results, a new model is proposed that shows good measurement accuracy [2]. In this paper, the different propagation modes of waves in the inhomogeneous medium are discussed for the investigation of the traveling paths and times.…”

Section: Introductionmentioning

confidence: 99%

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FDTD Simulation of Substrate Environments

Tang

Guo

et al.

2006 IEEE International Conference on Networking, Sensing and Control

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Ground penetrating radar (GPR) waves in inhomogeneous medium are analyzed by numerical method in this paper. The theory analysis provides physical interpretation of a calculation model for characteristics of subsurface layers. In this model, the thickness and permittivity of subsurface layers would be estimated by traveling time of reflection wave in GPR measurement. A 3-D finite-difference time-domain (FDTD) code is used to simulate electromagnetic fields in multi-layer ground. Numerical simulations of the responses of GPR are described. Responses of different offset radars are studied in this paper. The thickness of planar layer is calculated by simulated results. Results calculated from FDTD simulations verify the accuracy of the model for estimating the parameters of ground by GPR.

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“…In the new model [2], distance of transmitter and receiver affects on reflected ray path in multi-layer medium. The model is shown in Fig.1.…”

Section: Formulationmentioning

confidence: 99%

“…For function (2), T(x) is minimized when l x = and used in short offset case. The thickness of layer 2 can be derived by known T(x).…”

Section: Formulationmentioning

confidence: 99%

“…Geometry for searching the shortest ray path [2]. The shortest travel time along the reflected path is T-Q 1 -P-Q 2 -R. 2l is the space between transmitter and receiver (T-R).…”

Section: Formulationmentioning

confidence: 99%

Section: Formulationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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