Simulation Method of Conductor Target Electromagnetic Scattering Based on Nurbs Surface Modeling
A technology of target electromagnetic scattering and simulation method, which is applied in the field of radar electromagnetic simulation to achieve the effect of improving efficiency and reducing demand
Active Publication Date: 2019-04-23
XIDIAN UNIV
View PDF2 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
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
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0033] The embodiments and effects of the present invention will be described in further detail below with reference to the accompanying drawings.
[0034] Reference 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 "Control Point Coordinates to Create Surface" in the surface model option, enter the control point coordinates of the scattering target, and get 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 points on the NURBS surface, including the following steps.
[0039] (2a) Read the surface element information of the NURBS surface in the "iges" file. The surface element information includes the NURBS surface u-direction node vector U=[0.0,...,1.0], v-direction node vector V=[0.0,...,1.0] ], control point coordinate d i,...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More 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 present invention belongs to the technical field of radar electromagnetic simulation technology, and mainly relates to numerical simulation of electromagnetic scattering. Specifically, it is a conductive target electromagnetic scattering simulation method based on non-uniform rational B-spline NURBS surface modeling, which is used to obtain the single-station radar 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 towards intelligence, high precision, and long-distance. The study of electromagnetic scattering of complex targets is of great significance in theoretical analysis and practical applications. When airborne or spaceborne radars perform electromagnetic detection on complex targets such as aircraft and missiles, they can analyze t...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
CPCG06F30/367
Inventor 郭立新刘蛟何红杰冯恬恬
Owner XIDIAN UNIV