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Group target detection method based on electromagnetic scattering characteristics and topological configuration

An electromagnetic scattering and detection method technology, which is applied in radio wave measurement systems, radio wave reflection/reradiation, and measurement devices, can solve problems such as low precision and low target detection efficiency, and achieve the effect of improving accuracy

Active Publication Date: 2022-04-29
ROCKET FORCE UNIV OF ENG
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Problems solved by technology

[0004] In order to solve the problems of low target detection efficiency and low precision in the above-mentioned existing group target detection and recognition technology, the purpose of the present invention is to propose a group target detection method based on electromagnetic scattering characteristics and topological configuration to improve target detection. Accuracy and Detection Efficiency

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  • Group target detection method based on electromagnetic scattering characteristics and topological configuration
  • Group target detection method based on electromagnetic scattering characteristics and topological configuration
  • Group target detection method based on electromagnetic scattering characteristics and topological configuration

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Embodiment Construction

[0039] Important technical terms involved in the present invention are explained as follows:

[0040] 1. Dual-polarization SAR images: SAR (synthetic aperture radar) images of two polarization modes such as HH (horizontal emission, horizontal reception) polarization and HV (horizontal emission, vertical reception) polarization.

[0041] 2. CFAR algorithm: Constant False-Alarm Rate algorithm, constant false alarm rate detection algorithm.

[0042] 3. MRF algorithm: Markov Random Filed, Markov random field image segmentation algorithm.

[0043] 4. Multi-core DSP: Multi-core digital signal processor, such as TI's TMS320C6678 (8 cores).

[0044] In order to further illustrate the technical means and functions adopted by the present invention to achieve the intended purpose, the present invention will be described in detail below in conjunction with the accompanying drawings.

[0045] The group target detection method based on electromagnetic scattering characteristics and topolo...

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Abstract

The invention discloses a group target detection method based on electromagnetic scattering characteristics and topological configuration. The method comprises the following steps: step 1, receiving a dual-polarized SAR (Synthetic Aperture Radar) image; step 2, obtaining a polarization enhanced image; step 3, obtaining a mean filtering image; 4, selecting a segmentation algorithm, and processing the mean filtering image obtained in the step 3 by adopting the selected segmentation algorithm to obtain a first binary image; step 5, performing MRF segmentation on the mean filtering image to obtain a second binary image; step 6, performing target pixel clustering on the first binary image obtained in the step 4 by adopting a first-row and second-column clustering method to obtain a plurality of single targets; step 7, obtaining a plurality of single targets corresponding to the second binary image; 8, obtaining a plurality of target groups; and step 9, selecting the target group with the maximum confidence value as the detected target group. The method can meet the requirements of high-precision and real-time detection of the group targets in the SAR image in an actual application scene.

Description

technical field [0001] The invention relates to the technical field of SAR image processing and target recognition, in particular to a group target detection method based on electromagnetic scattering characteristics and topological configuration. Background technique [0002] SAR has all-weather and all-weather capabilities. It can not only obtain image features such as the structure and shape of the target, but also obtain electromagnetic scattering characteristics such as the intensity and amplitude of scattering points. The available information is more abundant. Using SAR imaging to accurately identify group targets with significant electromagnetic scattering characteristics is of great significance for applications such as radar guidance. [0003] Due to the complex environmental background in the actual application scene, typical scenes include Gobi desert, grassland, woodland, viaduct, building complex, etc., and group target detection and recognition are more diffic...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06V20/10G06V10/25G06V10/28G06V10/36G06V10/762G06V10/84G06K9/62G01S13/04G01S7/41G01S13/90
CPCG01S13/04G01S13/9004G01S13/9094G01S7/414G06F18/23G06F18/295
Inventor 胡昌华许涛钟都都邬伯才竺红伟何川夏巍巍高超常沛吴涛
Owner ROCKET FORCE UNIV OF ENG
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