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Method for extracting 3D scattering center based on generalized Hough transform

A technology of scattering center and extraction method, which is applied in the direction of radio wave measurement system, instrument, etc., to achieve the effect of convenient realization and simple principle

Active Publication Date: 2015-07-29
BEIJING INST OF ENVIRONMENTAL FEATURES
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Problems solved by technology

[0003] The existing scattering center extraction method is usually extracted by one-dimensional scattering center distribution reconstruction under multi-attitude angles, but this method must be a fixed scattering center, and it is invalid for typical sliding scattering centers

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  • Method for extracting 3D scattering center based on generalized Hough transform
  • Method for extracting 3D scattering center based on generalized Hough transform
  • Method for extracting 3D scattering center based on generalized Hough transform

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[0050] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

[0051] Such as figure 1 As shown, a method for extracting a three-dimensional scattering center based on a generalized Hough transform in an embodiment of the present invention, the method for extracting a three-dimensional scattering center based on a generalized Hough transform includes:

[0052] Step 101: Processing the first radar cross-sectional area data to establish a two-dimensional scattering center height slice.

[0053] Step 102: Perform binary analysis and generalized Hough transform on each two-dimensional scattering center height slice to obtain the two-dimensional position and sliding radius of the scattering center;

[0054] Step 103: Using the two-dimensional position of the scattering center and the sliding radius to obtain a straight ...

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Abstract

The invention provides a method for extracting the 3D scattering center based on generalized Hough transform. The method comprises that first radar scattering sectional area data is processed to establish 2D scattering center height slices; binary analysis and generalized Hough transform are carried out on each 2D scattering center height to obtain the 2D position and sliding radius of the scattering center; a first linear equation which the scattering center height value z and sliding radius R satisfy is obtained by utilizing the 2D position and sliding radius of the scattering center; the first radar scattering sectional area data is replaced by second radar scattering sectional area data, and above steps are repeated to obtain a second linear equation; and the 3D position and sliding radius of the scattering center are obtained by utilizing the first and second equations. Thus, sliding 2D and 3D scattering centers can be extracted, the principle is simple and visual, and the method is convenient to realize.

Description

technical field [0001] The invention relates to the technical field of radar target characteristics, in particular to a method for extracting three-dimensional scattering centers based on generalized Hough transform. Background technique [0002] In recent years, electromagnetic scattering theory and experiments have shown that the electromagnetic scattering of radar targets in the optical zone is the synthesis of electromagnetic scattering at some local positions of the target. These local scattering sources are usually called scattering centers. The one-dimensional scattering center reflects the projection distribution of the radar target in the direction of the radar line of sight, and the information carried cannot fully describe the scattering structure of the target, while the two-dimensional and three-dimensional scattering centers can more accurately reflect the geometric structure characteristics of the target, so the research The 2D and 3D scattering center of the ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/41
CPCG01S7/41
Inventor 闫华李胜崔闪
Owner BEIJING INST OF ENVIRONMENTAL FEATURES
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