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High-efficiency imaging method for multiple-input multiple-output borehole radar based on high degree of freedom

A technology of borehole radar and imaging method, which is applied in the field of high-efficiency imaging of multi-input and multiple-output borehole radar based on high degree of freedom, can solve the problem of not considering the variable transceiver spacing and restrict the application of the multi-input and multiple-output borehole radar system , poor positioning accuracy, etc.

Active Publication Date: 2021-04-20
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

However, the Stolt migration algorithm also does not consider the variable transceiver spacing of the multi-input multi-output borehole radar, and positioning deviation will occur when dealing with non-single-base radar imaging
[0006] The existing radar imaging algorithm has poor positioning accuracy and low efficiency in the application of multi-input multi-output drilling radar imaging, which restricts the application of multi-input multi-output drilling radar system in actual engineering

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  • High-efficiency imaging method for multiple-input multiple-output borehole radar based on high degree of freedom
  • High-efficiency imaging method for multiple-input multiple-output borehole radar based on high degree of freedom
  • High-efficiency imaging method for multiple-input multiple-output borehole radar based on high degree of freedom

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[0025] In order to understand the above-mentioned purpose, features and advantages of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, under the condition of not conflicting with each other, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0026] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from the scope of this description. Therefore, the protection scope of the present invention is not limited by the following disclosure. limitations of specific examples.

[0027] The object of the present invention is to realize the high degree of freedom of the multi-input multi-output drilling radar sampling data by improving the...

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Abstract

The invention discloses a high-efficiency imaging method for multi-input multi-output drilling radar based on high degree of freedom. The method completes the sampling space in the high-degree-of-freedom sampling data matrix by improving the imaging degree of freedom of multi-input multi-output drilling radar sampling data The conversion to the target space realizes high-efficiency and high-precision imaging of the multi-input multi-output drilling radar sampling data; Influence, use fast Fourier transform to obtain the frequency wavenumber spectrum of the sampling data in the expanded high-degree-of-freedom sampling space, and bridge the sampling space and the target space to obtain the imaging results of the target space, and realize the sampling of multi-input and multi-output drilling radar High-efficiency and high-precision imaging of data enhances the application value of multi-input and multi-output drilling radar in practical engineering.

Description

technical field [0001] The invention belongs to the technical field of radar imaging, and relates to a drilling radar target imaging technology, in particular to a high-efficiency imaging method for a multi-input and multi-output drilling radar based on a high degree of freedom. Background technique [0002] Borehole radar imaging technology is one of the key technologies for underground target detection and identification, and has been widely used in the fields of crack and cavity detection, hydrogeology and geological exploration. Compared with optical remote sensing methods, borehole radar imaging technology has all-weather operability and better material penetration. However, due to the complexity of the underground detection environment, monostatic and bistatic borehole radar imaging systems are susceptible to strong clutter interference, and the effective reflection signals of targets are usually submerged by strong clutter signals and cannot be identified. [0003] W...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S13/89
CPCG01S13/89
Inventor 杨海宁李娜李廷军刘云龙黄昌瑞樊勇
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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