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Method and device for fast extraction of distributed scattering centers based on polarization features

A technology of scattering centers and polarization features, which is applied in the field of rapid extraction of distributed scattering centers based on polarization features, and can solve the problems of slow speed and low accuracy.

Active Publication Date: 2020-06-26
BEIJING INST OF ENVIRONMENTAL FEATURES
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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a method, device and equipment for quickly extracting distributed scattering centers based on polarization characteristics, which can More accurately and quickly realize the type judgment of typical distributed scattering centers

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  • Method and device for fast extraction of distributed scattering centers based on polarization features
  • Method and device for fast extraction of distributed scattering centers based on polarization features
  • Method and device for fast extraction of distributed scattering centers based on polarization features

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Embodiment Construction

[0045] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0046] The invention proposes a method for quickly extracting distributed scattering centers based on polarization characteristics, which can realize fast type judgment of typical distributed scattering centers, and is mainly used in radar target feature extraction and recognition.

[0047] see figure 1 , is a flowchart of a method for quick...

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Abstract

The invention relates to a method, a device and equipment for quickly extracting a distributed scattering center based on polarization features, wherein the method comprises the following steps: segmenting the ISAR image of the four-polarization channel by the threshold segmentation method; using the inertia moment method for each closed region after image segmentation to determine whether it is adistributed scattering center; and using the ISAR image of the four-polarization channel to construct a polarization scattering matrix of the distributed scattering center at a scattering amplitude corresponding to the segmentation region after the distributed scattering center is determined, and determining the type of the distributed scattering center based on the polarization scattering matrix. Compared with the existing commonly-used method for determining the distributed scattering center type, the method can determine the type of a typical distributed scattering center more accurately and quickly.

Description

technical field [0001] The invention relates to the technical field of electromagnetic characteristic analysis, in particular to a method, device and equipment for quickly extracting distributed scattering centers based on polarization characteristics. Background technique [0002] There are three commonly used methods to judge the type of distributed scattering centers by combining polarization information: one is based on the attribute scattering center model, extracting the orientation and frequency dependence factors of distributed scattering centers, so as to realize the identification of distributed scattering centers Type judgment, due to the large number of parameters and complex structure of the attribute scattering center model, iterative operation is required, so the calculation speed of this method is slow, and it is easy to fall into the local optimization; the second type is to use CP-GTD (Coherent Polarization Geometric Theory of Diffraction, Based on the cohe...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/00G06T7/11G06T7/136G06T7/187
CPCG06T7/0002G06T7/11G06T7/136G06T7/187G06T2207/10044
Inventor 邢笑宇霍超颖满良
Owner BEIJING INST OF ENVIRONMENTAL FEATURES
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