A Method for Extracting Scattering Contribution of Radar Target Fine Structure

A radar target, fine structure technology used in the use of re-radiation, reflection/re-radiation of radio waves, instruments, etc.

Active Publication Date: 2022-03-25
SHANGHAI RADIO EQUIP RES INST
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, there is currently no suitable extraction method for isolating the contribution of these fine structures

Method used

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  • A Method for Extracting Scattering Contribution of Radar Target Fine Structure
  • A Method for Extracting Scattering Contribution of Radar Target Fine Structure
  • A Method for Extracting Scattering Contribution of Radar Target Fine Structure

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Embodiment Construction

[0030] As mentioned in the background art, there is currently no suitable extraction method for separating the contribution of these fine structures. After research, it was found that Beihang University in the patent "Repair component of screw head for radar stealth combat aircraft" (Publication No.: In CN106628174A), light plane treatment is carried out for the special screw head repair component for the fine structure of stealth aircraft to ensure the performance of reducing weak scattering, and at the same time to ensure reliability and convenience; "Construction method of scaled target of coating" (Publication No.: CN109614652A), on the basis of considering the reflection characteristics of scaled material, the structural effect between the weak scattering source of the target and the material is simulated and analyzed, and then optimized by adjusting the gap width. A scaled target model with closer scattering characteristics; University of Electronic Science and Technology...

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Abstract

The invention discloses a radar target fine structure scattering contribution extraction method, comprising: dividing the geometric calculation area of ​​the radar target into a direct area and an indirect area; obtaining frequency sweep angle intervals according to preset imaging requirements; and the indirect area are meshed to obtain the marked direct area and the marked indirect area; the inverse calculation of the marked direct area and the marked indirect area is carried out by using the direct solution method and the iterative solution method respectively, and the frequency sweep is obtained Sweep angle scattering field data; perform radar imaging based on sweep frequency sweep angle scattering field data and sweep frequency sweep angle intervals to obtain two-dimensional ISAR images; analyze the scattering mechanism of fine structures based on two-dimensional ISAR images, and obtain its scattering contribution in two-dimensional ISAR The position in the image domain of the image is reconstructed to capture the scattering contribution of the fine structure. The invention adopts a high-efficiency radar target simulation method to obtain target scattering characteristics, and then image and extract fine structure scattering contribution.

Description

technical field [0001] The invention relates to the technical field of radar target characteristic simulation, in particular to a method for extracting scattering contribution of radar target fine structure. Background technique [0002] With the development of radar and computer technology, the accuracy of target characteristics calculation is getting higher and higher, and the contribution of radar target fine structure to scattering characteristics cannot be ignored. In order to better control the scattering characteristics of the target, it is often necessary to isolate the contribution of these fine structures and give corresponding suppression measures. However, there is currently no suitable extraction method for isolating the contribution of these fine structures. [0003] Therefore, it is urgent to propose a fast electromagnetic simulation method that can be applied to calculate radar targets with fine structures, and at the same time obtain the location of fine st...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S13/90
CPCG01S13/9005G01S13/9064
Inventor 高伟魏飞鸣顾丹丹张元
Owner SHANGHAI RADIO EQUIP RES INST
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