Estimation of Length and Orientation of Subsurface Thin-wire Structures Based on Transient Electromagnetic Responses

ZHOU Lijun; OUYANG Shan; LIAO Guisheng; JIN Liangnian

doi:10.11999/JEIT160718

Volume 39 Issue 6

Jun. 2017

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Article Navigation > Journal of Electronics & Information Technology > 2017 > 39(6): 1424-1431

ZHOU Lijun, OUYANG Shan, LIAO Guisheng, JIN Liangnian. Estimation of Length and Orientation of Subsurface Thin-wire Structures Based on Transient Electromagnetic Responses[J]. Journal of Electronics & Information Technology, 2017, 39(6): 1424-1431. doi: 10.11999/JEIT160718

Citation:

ZHOU Lijun, OUYANG Shan, LIAO Guisheng, JIN Liangnian. Estimation of Length and Orientation of Subsurface Thin-wire Structures Based on Transient Electromagnetic Responses[J]. Journal of Electronics & Information Technology, 2017, 39(6): 1424-1431. doi: 10.11999/JEIT160718

Citation:

ZHOU Lijun, OUYANG Shan, LIAO Guisheng, JIN Liangnian. Estimation of Length and Orientation of Subsurface Thin-wire Structures Based on Transient Electromagnetic Responses[J]. Journal of Electronics & Information Technology, 2017, 39(6): 1424-1431. doi: 10.11999/JEIT160718

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Estimation of Length and Orientation of Subsurface Thin-wire Structures Based on Transient Electromagnetic Responses

doi: 10.11999/JEIT160718

1.
(School of Electronic Engineering, Xidian University, Xi&rsquo
2.

Funds:

The National Natural Science Foundation of China (61371186, 61162007), Guangxi Natural Science Foundation (2013GXNSFFA019004)

Received Date: 2016-07-07
Rev Recd Date: 2016-12-15
Publish Date: 2017-06-19

Abstract

Abstract

It is particularly important to estimate the geometric features of buried pipe cables in urban construction and municipal infrastructure maintenance. For this kind of subsurface thin-wire structure targets, a method for estimation of the length and orientation of a target based on transient electromagnetic responses is proposed. In this method, a time delay difference model of the backscattering responses from such thin-wire structures illuminated by electromagnetic wave at Brewsters angle with horizontal polarization is established. By analyzing the time-frequency distribution of the transient responses, the relationship between the resonant state and the target length is established and the length of the target is estimated. The energy change between the early time responses and late time resonances is applied to determining the time sequence of the arrival of the electromagnetic wave to the target. Then the target orientation is estimated by the time delay difference of early time responses. Numerical simulation results show that the proposed method is effective in the case of the direction of electric field close to the target axial direction. Meanwhile, the proposed method is robust to noise, and can be applied to length estimation forSNR5 dB and orientation estimation for SNR10 dB.
- Transient responses,
- Resonances,
- Length estimation,
- Orientation estimation

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References(27)

References

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