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Simulation method of scattering cross section of 3D rough target radar

A technology of radar cross section and simulation method, which is applied in the simulation field of three-dimensional rough target radar cross section, can solve problems such as inability to generate rough targets, large amount of calculation, and inability to superimpose target surface roughness, etc., achieving fast calculation speed and low calculation volume Small, wide range of effects

Active Publication Date: 2017-01-25
XIDIAN UNIV
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Problems solved by technology

[0006] The disadvantages of this method are: first, when the target surface is continuous, the roughness of the target surface cannot be superimposed, and thus the rough target cannot be generated
Second, when the target is a three-dimensional target, it is necessary to use the superposition of three rough surface element coordinates to generate point coordinates on the three-dimensional rough target. This method requires too much calculation when the number of surface elements is large.

Method used

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  • Simulation method of scattering cross section of 3D rough target radar
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  • Simulation method of scattering cross section of 3D rough target radar

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Embodiment Construction

[0036] The present invention will be further described below in conjunction with the accompanying drawings.

[0037] Refer to attached figure 1 , the concrete steps of the present invention are as follows.

[0038] Step 1, segment the target.

[0039] The three-dimensional smooth object is divided into multiple parts determined by the shape of the three-dimensional smooth object along its outer surface, and a plurality of corresponding sub-smooth objects are obtained.

[0040] The division into multiple parts determined by the shape of the three-dimensional smooth object refers to:

[0041] If the 3D smooth object is a combination of multiple geometries, along the connection surfaces between all adjacent geometries on the 3D smooth object, use any three points on each connection surface that are not collinear to determine a plane, The object is each divided into a plurality of parts with the determined planes.

[0042] If the three-dimensional smooth object is not a combin...

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Abstract

The invention discloses a simulation method of scattering cross section of 3D target radar. The method comprises the steps of (1) dividing a 3D smooth target into a plurality of sub-smooth targets; (2) projecting the outer surface of each sub-smooth target to a suitable coordinate plane; (3) utilizing Monte Carlo algorithm to generate 2D rough surface covering the corresponding projection area for each projection area; (4) generating 3D rough target; (5) Utilizing physical optics method to calculate the radar scattering cross section of 3D rough target.The invention divides 3D smooth target and combines 2D rough surface generation method to generate 3D rough targets, which provides the method with good model universality. The calculation speed is faster and can be used for simulating radar scattering cross section of 3D rough blunt cone, airplanes and other targets.

Description

technical field [0001] The invention belongs to the technical field of physics, and further relates to a method for simulating the radar scattering cross section of a three-dimensional rough target in the technical field of electromagnetic waves. The invention can be used for simulating the radar scattering cross section of three-dimensional targets such as blunt cones and airplanes. Background technique [0002] The electromagnetic scattering characteristics of targets have always been a research hotspot in the field of electromagnetics. Research in this area has important applications in many fields such as remote sensing, aircraft stealth performance design, radar monitoring and tracking. Among the traditional research objects, the research objects of computational electromagnetics are all smooth, but the research on the modeling of rough objects and the analysis of their electromagnetic scattering characteristics is rarely involved. [0003] The patent application "a p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T17/00
CPCG06T17/00
Inventor 郭立新刘松华周新博
Owner XIDIAN UNIV
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