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Conductor target electromagnetic scattering simulation method based on NURBS (Non-Uniform Rational B-Splines) curved surface modeling

A target electromagnetic scattering, surface modeling technology, applied in electrical digital data processing, special data processing applications, instruments, etc., to achieve the effect of improving efficiency and reducing demand

Active Publication Date: 2016-11-23
XIDIAN UNIV
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  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to aim at the current large scattering problem, and propose a conductor target electromagnetic scattering simulation method based on NURBS surface modeling, to improve the efficiency of electromagnetic scattering simulation while ensuring simulation accuracy, and reduce the impact of simulation experiments on computer memory. requirements to meet engineering application requirements

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  • Conductor target electromagnetic scattering simulation method based on NURBS (Non-Uniform Rational B-Splines) curved surface modeling
  • Conductor target electromagnetic scattering simulation method based on NURBS (Non-Uniform Rational B-Splines) curved surface modeling
  • Conductor target electromagnetic scattering simulation method based on NURBS (Non-Uniform Rational B-Splines) curved surface modeling

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Embodiment Construction

[0033] Embodiments and effects of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0034] refer to figure 1 , the implementation steps of the present invention are as follows:

[0035] Step 1: Obtain the scattering target model.

[0036] (1a) Open the commercial software Rhino, click the "control point coordinates to create a surface" in the surface model option, input the control point coordinates of the scattering target, and obtain the NURBS surface model of the scattering target.

[0037] (1b) Export the built scattering target model in the "iges" file format.

[0038] Step 2: Calculate the coordinates of the points on the NURBS surface, including the following steps.

[0039] (2a) Read the bin information of the NURBS surface in the "iges" file, the bin information includes the u-direction node vector U=[0.0,...,1.0] of the NURBS surface, the v-direction node vector V=[0.0,...,1.0] ], control point coordi...

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Abstract

The invention discloses a conductor target electromagnetic scattering simulation method based on NURBS (Non-Uniform Rational B-Splines) curved surface modeling, aiming at mainly solving the problems of an existing method that the simulation efficiency is low and the requirements on a computer memory are high. The conductor target electromagnetic scattering simulation method comprises the following steps: 1, modeling a scattering target with an NURBS curved surface through commercial software Rhino; 2, decomposing a parameter region of a scattering target model and deducing a coordinate formula of the NURBS curved surface, so as to obtain conductor target physical optical scattering integral and edge diffraction field integral formulas; 3, calculating values of physical optical scattering integral and edge diffraction field integral; and 4, obtaining a single-station radar scattering section RCS of a conductor target according to the values of the physical optical scattering integral and the edge diffraction field integral. Under the condition of guaranteeing the precision, the simulation efficiency is improved, the requirements of simulation experiments for the computer memory are reduced, and the method can be used for obtaining the single-station radar scattering section RCS of the conductor target.

Description

technical field [0001] The invention belongs to the technical field of radar electromagnetic simulation, and mainly relates to numerical simulation of electromagnetic scattering, in particular to an electromagnetic scattering simulation method of a conductor target based on non-uniform rational B-spline NURBS surface modeling, which is used to obtain the single-station radar scattering cross-section of the scattering target RCS. Background technique [0002] With the rapid development of information technology, modern warfare has evolved from mechanized warfare to informationized warfare. Modern detection equipment and weapon systems are developing toward intelligence, high precision, and long-distance. The research on electromagnetic scattering of complex targets is of great significance in theoretical analysis and practical application. When airborne or spaceborne radar conducts electromagnetic detection on aircraft, missiles and other complex targets, it can play a certa...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/367
Inventor 郭立新刘蛟何红杰冯恬恬
Owner XIDIAN UNIV
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