Hankel matrix singular value decomposition based noise inhibition method of ground penetrating radar

A ground-penetrating radar and noise suppression technology, which is applied in the field of ground-penetrating radar noise suppression based on Hankel matrix singular value decomposition, can solve the problems of poor threshold stability, complex methods, and great influence of detection conditions, and achieve good threshold stability and suppression Effects of Noise, Ease of Calculation

Active Publication Date: 2018-12-11
CHINA UNIV OF GEOSCIENCES (WUHAN)
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Problems solved by technology

The empirical method determines the singular value of the target signal based on experience, which is easily affected by human subjectivity; the eigenvalue energy percentage method can determine the singular value of the target signal, but this method is more complicated, the threshold stability is poor, and it is greatly affected by specific detection conditions

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  • Hankel matrix singular value decomposition based noise inhibition method of ground penetrating radar
  • Hankel matrix singular value decomposition based noise inhibition method of ground penetrating radar
  • Hankel matrix singular value decomposition based noise inhibition method of ground penetrating radar

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Embodiment Construction

[0035] In order to have a clearer understanding of the technical features, objectives and effects of the present invention, the specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0036] The embodiment of the present invention provides a ground penetrating radar noise suppression method based on the Hankel matrix singular value decomposition.

[0037] Please refer to figure 1 , figure 1 It is a flowchart of a noise suppression method for ground penetrating radar based on Hankel matrix singular value decomposition in an embodiment of the present invention, which specifically includes the following steps:

[0038] S101: Input ground penetrating radar B-scan image X∈R M×N , Where M is the number of channels, and N is the number of sampling points for each channel;

[0039] S102: Construct a Hankel matrix according to a piece of data of the B-scan image of the ground penetrating radar; suppose the piece of data is x...

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Abstract

The invention discloses a Hankel matrix singular value decomposition based noise inhibition method of a ground penetrating radar. The ground penetrating radar B scans each channel of data in an imageto construct a Hankel matrix; singular value decomposition is carried out on the Hankel matrix; a differential spectrum of the singular values is calculated, and a mean value of the differential spectrum serves as a threshold to determine a boundary point between target and noise signal singular values; and the target signal singular value is used to implement reconstruction to obtain de-noised data. The method has the advantages that singular value distribution difference of the Hankel matrix of the target and noise signals is obtained, the mean value of the singular value differential spectrum serves as the threshold to determine the target signal singular value automatically, calculation is simple, the threshold stability is high, and noise in ground penetrating signals can be inhibitedeffectively.

Description

Technical field [0001] The invention relates to the field of digital signal processing, in particular to the noise suppression problem of ground penetrating radars, and in particular to a noise suppression method for ground penetrating radars based on Hankel matrix singular value decomposition. Background technique [0002] Ground-penetrating radar is based on the principle of electromagnetic wave propagation and scattering. It detects underground targets by transmitting electromagnetic wave signals to the ground and receiving echoes scattered from discontinuities in underground media. Compared with detection methods such as resistivity method, low frequency electromagnetic induction method and seismic method, ground penetrating radar has the advantages of fast detection speed, continuous detection process, high resolution, convenient and flexible operation, low cost, and wide detection range (can detect metals and non- Metal) and other advantages have been widely used in geology...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/292G01S7/35G01S13/88
CPCG01S7/2927G01S7/354G01S13/885
Inventor 薛伟罗严朱继超刘力戴向阳
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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