Discrimination of Buried Objects in Impulse GPR Using Phase Retrieval Technique

Huuskonen-Snicker, Eeva; Mikhnev, V.; Olkkonen, Martta-Kaisa

doi:10.1109/tgrs.2014.2331427

Cited by 11 publications

(6 citation statements)

References 16 publications

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“…Here the time = t IR1 − t IR0 indicates the time of EM wave propagating a diameter distance of the cylinder. The theoretic time delays and the simulated time delays are calculated according to (10) and (13), respectively. The results are listed in Table 1.…”

Section: Thus (3) Can Be Rewritten Asmentioning

confidence: 99%

“…The path length is given as Θ m s = Θ m out +2h s . In fact, substitute this path length into (10) and it is found that the result will not change. The actual magnitude of time-domain responses from the subsurface cylinder will be much smaller than that in free space due to a great deal of loss from waves reflected directly from the ground surface.…”

Section: Electromagnetic Scattering Model For a Subsurface Dielectricmentioning

confidence: 99%

“…Usually, cracks are regarded as cylindrical shape to obtain analytic solutions in theoretic analysis [8][9][10]. The electromagnetic (EM) scattering of a dielectric cylinder with circular cross-section by means of transient time-domain technique has been made great progress [11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Width estimation of a subsurface water-filled crack using internal multiple reflections from electromagnetic scattering model of a cylinder

Zhou

Ouyang

Liao

et al. 2017

Journal of Electromagnetic Waves and Applications

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A width estimation method for a subsurface water-filled crack using internal multiple reflections is proposed. The energy transport and path length of internal multiple reflections are analyzed from electromagnetic scattering model of a dielectric cylinder using the extended ray theory. The energy transport shows that some multiple rays transport along the surface of the cylinder to the receiver, which form the creeping waves, and some multiple rays refract toward the receiver, focusing on the radial direction. The conclusion that the path lengths are multiples of a diameter distance is utilized to estimate the width of the cylinder. In order to distinguish the adjacent reflections with small time interval, wavefronts and resonances of internal multiple reflections are also analyzed, based on the fact that the creeping waves and refracted waves at the radial direction show different resonances in the time-frequency domain. In order to verify the proposed method, experiments both in free space and subsurface scene are given to estimate the width of water-filled cracks.© 2017 the author(s). published by informa uK limited, trading as taylor & francis group. this is an open access article distributed under the terms of the creative commons attribution-noncommercial-noderivatives license (http://creativecommons.org/licenses/by-nc-nd/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited, and is not altered, transformed, or built upon in any way.

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Section: Thus (3) Can Be Rewritten Asmentioning

confidence: 99%

Section: Electromagnetic Scattering Model For a Subsurface Dielectricmentioning

confidence: 99%

See 1 more Smart Citation

Width estimation of a subsurface water-filled crack using internal multiple reflections from electromagnetic scattering model of a cylinder

Zhou

Ouyang

Liao

et al. 2017

Journal of Electromagnetic Waves and Applications

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show abstract

“…There are different designs of GPR including impulse radar [12,13,14], frequency modulated continuous wave (FMCW) radar [15,16,17], stepped frequency continuous wave (SFCW) radar [18,19,20], and ultra wideband (UWB) signal radar [21,22]. Commercial GPR is mainly based on impulse signals.…”

Section: Introductionmentioning

confidence: 99%

Locating Underground Pipe Using Wideband Chaotic Ground Penetrating Radar

Guo

Leung

et al. 2019

Sensors

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An experimental wideband chaotic ground penetrating radar is proposed to locate underground pipes. A chaotic signal with a bandwidth of 1.56 GHz is utilized as the probe signal. The localization of the pipes is achieved by correlating the chaotic echo signal with its delayed duplicate and back-projection algorithm. Experimental results demonstrate that plastic pipe, metallic pipe, and multiple pipes can be located with a range resolution of 10 cm. Limited by the height of the sand, the detectable range is estimated to be 0.7 m for both the plastic pipes and the metallic pipes when the transmitting power is −12 dBm. The proposed system has the potential to detect buried pipes, and it is suitable for geological and civil engineering applications.

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“…Once the buried pipes are damaged, the undesirable fluid losses due to leaks can cause enormous environmental and economic repercussions. Ultra-wideband (UWB) ground penetrating radar (GPR) [1][2][3] as one of the non-destructive techniques [4][5][6][7][8] to locate the underground pipes attracts increasing attention because it is capable of accurately locating both metallic and non-metallic pipes without prior knowledge. However, conventional UWB GPR utilizes short pulse as the transmit signals, which leads to a tradeoff between the resolution and the detection distance.…”

Section: Introductionmentioning

confidence: 99%

A High Signal–Noise Ratio UWB Radar for Buried Pipe Location Using Golay Complementary Sequences

Liu

et al. 2019

Applied Sciences

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A Golay-based ultra wideband ground penetrating for underground pipes location is proposed and experimentally demonstrated. Golay complementary codes with the code length of 1024 and frequency of 1 GHz are used as the probe signals. The two-dimensional image of the buried pipes is achieved by a correlation method and a back-projection algorithm. The experimental results show that both the plastic pipe and metallic pipe can be located with a range resolution of 10 cm. Furthermore, as the Golay complementary sequences are a pair of complementary sequences, the sum of their correlation function yields twice the value of the peak at the target position and zero elsewhere. Thus, compared with the stepped frequency signal radar or chaotic signal radar, the Golay-based radar can significantly improve the signal–noise ratio and has the capability of deep detection.

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Discrimination of Buried Objects in Impulse GPR Using Phase Retrieval Technique

Cited by 11 publications

References 16 publications

Width estimation of a subsurface water-filled crack using internal multiple reflections from electromagnetic scattering model of a cylinder

Width estimation of a subsurface water-filled crack using internal multiple reflections from electromagnetic scattering model of a cylinder

Locating Underground Pipe Using Wideband Chaotic Ground Penetrating Radar

A High Signal–Noise Ratio UWB Radar for Buried Pipe Location Using Golay Complementary Sequences

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