Ground-penetrating radar clutter removing method

A ground penetrating radar and clutter technology, applied in radio wave measurement system, radio wave reflection/re-radiation, utilization of re-radiation, etc. Effect

Inactive Publication Date: 2019-05-03
HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Abstract
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Problems solved by technology

However, the Stolt migration technique can only migrate sparse signals, and has little effect on clutter signals with low-order characteristics

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Embodiment Construction

[0029] In order to have a further understanding of the technical solutions and beneficial effects of the present invention, the technical solutions of the present invention and the beneficial effects produced are described in detail below.

[0030] The ground penetrating radar clutter removal method provided by the present invention is first selected based on L 21 - RPCA (Robust Component Analysis) model of the norm, this model uses L 21 - norm, which approximates L 0 - norm, L 21 -The norm can yield the sparsity of the column, the same as L 0 - Norm comparison can take into account the structural information of the data itself. And compared with the original RPCA model, the solution speed is fast, the running time is short, and the termination error is small. Thirdly, due to the insufficient sparsity of the target signal, in order to avoid large errors caused by improper selection of the main element, the present invention introduces the Stolt offset technology to first f...

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Abstract

The invention relates to a ground-penetrating radar clutter removing method. The method comprises the following steps of stepS1, using a Stolt offset method to carry out focus processing on ground-penetrating radar original data so as to obtain a ground-penetrating radar image matrix M; stepS2, using a robust principal component analysis method to decompose a ground-penetrating radar image M so asto acquire a low rank matrix L and a sparse matrix S which are a clutter L and a target S; and stepS3, removing the clutter L, and determining the retained target S to be the final ground-penetratingradar image after the clutter is removed. By using the ground-penetrating radar clutter removing method, the advantage of a Stolt offset technology is combined with the advantage of robust principalcomponent analysis; and compared with a direct robust principal component analysis algorithm, the method can be used to solve a problem that target echo energy is not concentrated, greatly increase sparseness, and avoid a large error due to the improper selection of a principal element.

Description

technical field [0001] The invention relates to the technical field of wireless radar signal processing, in particular to a ground penetrating radar clutter removal method. Background technique [0002] The Stolt migration technique is a wave migration method based on the wave equation. According to the propagation law of wave equation, this method can reversely extend the recorded wave field of ground penetrating radar to realize migration imaging. This method maintains all the characteristic information of the reflected wave in the process of migration, the diffracted wave is well converged, and the reflected energy of the multiple wave is suppressed at the same time. The advantage is that the processing speed is fast and the operation precision is high. However, the Stolt migration technique can only migrate sparse signals, and has little effect on clutter signals with low-order characteristics. [0003] Robust principal component analysis is a signal processing method...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S13/89G01S7/36G01S7/41
Inventor 吴学礼郑文俭孟凡华甄然
Owner HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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