A plane wave discontinuity finite element method for simulating a radar scattering cross-sectional area

Abstract

The invention belongs to the technical field of radar cross sections, and discloses a plane wave discontinuous finite element method for simulating a radar cross section area, which comprises the following steps of: supplying power to a simulated radar system through a power supply module; performing control operation on the radar by using the operation keys through a key operation module; a maincontrol module transmitting wireless electromagnetic waves through an electric wave transmitting module by using a transmitter; receiving returned electromagnetic waves by using a receiving antenna through a radio wave receiving module; Calculating the radar cross section area by using a data calculation program through a cross section calculation module; and carrying out simulation operation on radar electromagnetic waves by using a simulation program through an electromagnetic simulation module. According to the invention, the complexity of modeling is greatly reduced; A method for judging whether the product of the surface element normal vector and the electromagnetic wave incident direction vector is smaller than zero or not is adopted, calculation is simplified, and calculation time is saved; the discrete fitting accuracy is high through an electromagnetic simulation module model; the calculation complexity and the memory consumption are low; the calculation precision is controllable; High stability.

Description

technical field [0001] The invention belongs to the technical field of radar scattering cross section, in particular to a plane wave discontinuous finite element method for simulating the radar scattering cross section area. Background technique [0002] Radar is an electronic device that uses electromagnetic waves to detect objects. The radar emits electromagnetic waves to irradiate the target and receives its echo, thereby obtaining information such as the distance from the target to the electromagnetic wave emission point, the distance change rate (radial velocity), azimuth, and height. Radar Cross Section (RCS) is the most critical concept in radar stealth technology, which represents a physical quantity of the echo intensity generated by the target under the irradiation of radar waves. The radar cross section, also known as the backscatter cross section, is a measure of the ability of the target to scatter radar signals in the radar incident direction, and is expressed...

AI Technical Summary

Problems solved by technology

[0004] The calculation efficiency of the existing radar cross section area is low;

[0005] At the same time, when the existing simulation radar is simulated, when the simulation scale is large, it will cause the existing computer hardware configuration to be unbearable;

[0006] Poor stability, poor simulation accuracy

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