Radome three-dimensional modeling method based on frequency selective surface

Abstract

The invention discloses a radome three-dimensional modeling method based on a frequency selective surface, which comprises the following steps of (1) establishing a plurality of areas according to a physical model of a frequency selective surface radome, including M paraboloids and one conical surface; (2) intercepting a part overlapped with the contour of the physical model from the paraboloid and the conical surface, and splicing according to the height of the part to form a curved surface I; taking the plane where the prismatic edgings at the left side and the right side of the physical model are located as a section, and copying a mirror image surface related to the section on the curved surface I; (3) respectively establishing a local coordinate system on the regions; (4) establishinga unit model; (5) establishing a column of unit models on the bus of each region; and (6) in each area, carrying out rotary copying around a central axis to obtain a complete frequency selective surface unit array, and carrying out modeling. According to the present invention, the modeling precision is improved, and a simulation model which is controllable in precision and suitable for parallel computing is provided for the mechanical and electromagnetic characteristic analysis of the radome frequency selective surface.

Description

technical field [0001] The invention relates to the field of computer technology, in particular to a three-dimensional modeling method of a radome based on a frequency selective surface. Background technique [0002] As an antenna protection device, radome is widely used in military and civilian radio fields, such as aircraft nose radome, ground-air, air-to-air seeker radome, wing electronic warfare radome, aircraft back satellite radome, etc. Almost everywhere there is an antenna, there is a radome. Frequency Selective Surfaces (FSS, Frequency Selective Surfaces) is a spatial filtering structure that regulates the transmission and scattering characteristics of electromagnetic waves through surface structure design. It is applied to the radome, which can significantly improve the stealth ability of the antenna while protecting the antenna. of great value. [0003] The premise of analyzing the mechanical and electromagnetic characteristics of the frequency selective surface...

AI Technical Summary

Problems solved by technology

[0003] The premise of analyzing the mechanical and electromagnetic characteristics of the frequency selective surface radome is accurate modeling. In order to ensure the aerodynamic performance and stealth shape design of the flying weapon, the nose frequency selective surface radome is generally designed with a non-developable pointed conical surface shape. The time-frequency selective surface can no longer be designed and applied according to the ideal form of the planar two-dimensional periodic array, which greatly increases the difficulty of modeling, resulting in the design of the conformal frequency selective surface radome being limited by the lack of surface array modeling methods. A reasonable control scheme cannot be formed, and there is no rapid and accurate modeling method publicly reported

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