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Analysis method for stable scattering structure of ship

A technology of scattering structure and analysis method, applied to radio wave measurement systems, instruments, etc., to achieve the effect of saving time and computing resources, and strong automation

Inactive Publication Date: 2016-01-20
WUHAN UNIV
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Problems solved by technology

[0005] The present invention mainly solves the technical problems existing in the prior art: the space ray diversity technology is adopted to quickly extract the scattering sources under the whole azimuth angle of complex targets such as ships on the sea surface, and to obtain stable scattering sources, which is not only universally applicable It is suitable for all kinds of goals and has strong automation, saving a lot of time and computing resources

Method used

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  • Analysis method for stable scattering structure of ship
  • Analysis method for stable scattering structure of ship
  • Analysis method for stable scattering structure of ship

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Embodiment

[0047] Include the following steps:

[0048] Step 1, component decomposition step: perform component decomposition on the complex target ship of the high-precision geometric model established by ANSYS-workbench software. The decomposition here is relatively rough, and the overall structure of larger devices and systems on the ship can be taken as a Parts to see.

[0049] According to the ship geometry, the solid model is divided into figure 2 7 areas are shown, of which 1 is the main part of the hull, 2-7 are the main components on the deck, of which 1-hull, 2-compact naval gun, 3-cannon and missile fire control radar, 4 and 6-pair Air search radar, 5-anti-submarine rocket launcher, 7-anti-submarine missile launcher.

[0050] Step 2, the step of judging the scattering source: using the space ray diversity judgment method to judge and output the scattering source in the whole azimuth angle of the ship target. Using the method of ray tracing, the contribution to RCS of the p...

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Abstract

The invention relates to an analysis method for a stable scattering structure of a ship. An entity part of the ship is decomposed, an entity model of a geometrical structure of the ship is divided into 6 areas, the paths of all rays in the space are marked by tracking the rays, the rays are classified and clustered according to the paths, echo response of different parts is separated to obtain a scattering source of a complex fine ship model, and the strong scattering source is ordered and screened according to a determination result of the scattering source. RCS contribution change of the assigned scattering source within the wide angle range is checked to extract the stable scattering source, mapping relation between the entity part and the target scattering feature is established, and an effective auxiliary approach is provided for feature analysis of the highly-fine complex geometrical model of the ship. The method can be used to extract the scattering source in all angles of the complex target rapidly, the stable scattering source is obtained from analysis, and the method is suitable for different types of targets.

Description

technical field [0001] The invention relates to the field of knowledge-assisted SAR target recognition technology, especially for high-precision and complex geometrically modeled maritime ship targets, the scattering source under the entire azimuth is quickly extracted, and the stable scattering source is obtained from the analysis. A method for analyzing ship's stable scattering structure. Background technique [0002] Different types and types of targets produce different scattered echoes in response to radar detection waves due to their respective geometric shapes, materials and other characteristics. People judge and identify detected targets according to the differences in echo characteristics. The reason for the unique scattering characteristics of the target is the source of strong scattering formed by the coupling between a single component or multiple components on the target. In the actual measurement process, people usually only get the scattered echo of the targ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/41
CPCG01S7/411
Inventor 何思远张云华贺菁菁
Owner WUHAN UNIV
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