Underground target locating method of ground penetrating radar based on frequency-spectrum residual significance detection method

A ground-penetrating radar and detection method technology, applied in electromagnetic wave detection, radio wave measurement systems, instruments, etc., can solve problems such as complex underground target positioning methods, and achieve the effects of short calculation time, noise elimination, and simple algorithms

Inactive Publication Date: 2018-07-27
HENAN UNIVERSITY OF TECHNOLOGY
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Problems solved by technology

[0006] In order to overcome the problems of many disadvantages such as the complexity of the underground target positioning method in the prior art, the present invention provides a ground penetrating radar underground target positioning method based on the spectrum residual saliency detection method

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  • Underground target locating method of ground penetrating radar based on frequency-spectrum residual significance detection method
  • Underground target locating method of ground penetrating radar based on frequency-spectrum residual significance detection method
  • Underground target locating method of ground penetrating radar based on frequency-spectrum residual significance detection method

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Embodiment Construction

[0044] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0045] The spectral residual saliency detection method is to convert the given radar echo image from its spatial domain to the frequency domain, take the logarithm of the amplitude to obtain the logarithmic spectrum (log spectrum), calculate the logarithmic spectrum and smooth filter it The final difference (that is, the spectral residue) is used to extract the target region of interest in the ground-penetrating radar echo image. The spectral residual method is used to extract the target region of interest, which can extract the region of interest at a faster computing speed. At the same time, the target information is relatively completely retained, thereby simplifying the algorithm of target positioning and improving the speed of target positioning.

[0046] The present invention is a method based on spectrum residual saliency detection to locate ground-pen...

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Abstract

The invention relates to an underground target locating method of a ground penetrating radar based on a frequency-spectrum residual significance detection method. The underground target locating method comprises the steps that (1) B-Scan echo data of the ground penetrating radar is subjected to wave filtering; (2) a target region of interest is looked for from a filtered B-Scan image by utilizingthe frequency-spectrum residual significance detection method; (3) an image of the extracted target region of interest is subjected to edge extraction; (4) a target hyperbola is located by using Houghtransform; (5) an underground target is located according to the target hyperbola. By means of the method, clutters and target echoes can be effectively distinguished, and the effect of clutter suppression is improved; the target region of interest can be accurately extracted, target information is completely reserved, and the accuracy of locating the target is improved; moreover, an adopted algorithm is concise, the operation time of the algorithm is short, and the underground target can be quickly located by the ground penetrating radar.

Description

technical field [0001] The invention relates to the field of ground-penetrating radar detection, in particular to a ground-penetrating radar underground target positioning method based on a spectral residual saliency detection method. Background technique [0002] Ground penetrating radar is a detection technology for detecting shallow underground targets by transmitting and receiving wireless electromagnetic waves. It is a non-destructive detection method with many advantages such as high resolution, good anti-interference performance, simple and flexible operation, and low detection cost. , It has gradually been widely used in various fields such as road construction, environmental geophysical detection, and archaeological detection. [0003] The two-dimensional echo data detected by ground penetrating radar is called B-Scan echo data. B-Scan echo data is generally displayed in two-dimensional cross-sectional images. It is the data basis for subsequent ground penetrating r...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V3/12G01S7/41
CPCG01V3/12G01S7/41
Inventor 秦瑶万静王其富刘刚谢日行朱春华乔丽红吴艳丽王博
Owner HENAN UNIVERSITY OF TECHNOLOGY
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