Electromagnetic scattering analysis method for ultra-high-speed thin-coated stealth flying targets

Abstract

The invention discloses an electromagnetic scattering analysis method of an ultra-high-speed thin-coated stealth flying target. Aiming at the non-uniform characteristics of the plasma wrapped around the ultra-high-speed thin-coated stealth flying target, the volume integral equation method is used to analyze the metal body of the stealth flying target and the stealth material coated by thin coating analysis based on area integral method for modeling analysis. Compared with the traditional method in which volume integral equations are used for all medium parts, the method of the present invention can save computing resources, and at the same time, because the Green's function used in the equation is the Green's function in vacuum, the multi-layer fast multi-level sub-technology is used The solution is further accelerated, so that the present invention requires less computing memory and computing time for solving the scattering problem of ultra-high-speed thin-coated stealth flying targets.

Description

Electromagnetic Scattering Analysis Method of Ultra-high Speed ​​Thin Coated Stealth Flying Target technical field The invention belongs to the technical field of rapid calculation of target electromagnetic scattering characteristics, in particular to an electromagnetic scattering analysis method applied to ultra-high-speed thin-coated stealth flying targets. Background technique Due to the high flight speed (above Mach 3) and high flight altitude (above 20Km) of the ultra-high-speed flying target, the friction with the air during its flight will generate aerodynamic heat of several thousand degrees Celsius, making the surrounding air appear ionized. The ionic state exists. When the degree of ionization reaches a certain level, the ionized gas has plasma properties. At this time, the enveloping flow field near the surface of the flying target is usually called plasma enveloping flow field, re-entry plasma or plasma sheath, which means that the flying target is covered by ...

AI Technical Summary

Problems solved by technology

However, using the above methods to analyze the electromagnetic scattering problem of ultra-high-speed thin-coated stealth flying targets faces the problem of large unknowns, which leads to the need for a lot of computing time and memory in the solution process.

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