Research On The Metallic Mesh For Stealth Technololgy

Firstly, this paper summarizes modern weaponry stealth technology at home and abroad, and lays special emphasis on analyzing stealth problem of cruise missile's guidance head cover, aerocraft radar canopy and other privileged sites. Secondly it makes a research on related theories of transparent metallic mesh that applied to missile's guidance head cover and aerocraft radar canopy, and deduces relational expression between transparent metallic mesh structural parameters and radar wave-shielding efficiency, infrared transmitting. We use laser direct writing technique to fabricate a metallic mesh (Dimension: 70mm×70mm; Line Width: 5μm; Period: 350μm) on glass surface, then do experiment to test radar wave-shielding of metallic mesh via radar transmitting and receiving device. Finally we come to the conclusion that it is feasible to solve stealth problem of these privileged sites by the means of transparent Metallic mesh technique, without any influence on infrared transmitting.This paper analyzes advantages and disadvantages of conventional method for stealth technology. We can solve the stealth problem of missile guidance by using metallic mesh with proper structural parameters.This paper uses the theory of equivalent circuit and equivalent membrane to analyze the influence of metallic mesh on radar wave shielding, deduce the relational expression between shielding efficiency and metallic mesh's width, period. We come to the conclusion that shielding efficiency can be improved by increasing metallic mesh's line width or reducing metallic mesh's period. The influence of metallic mesh packing block on radar wave shielding is only dependent on packing block material's surface electric resistance, independent on other factors of material. The less surface electric resistance is, the better metallic mesh's shielding effect is.This paper utilizes masking rate theory to analyze the variation of center zero-level energy, the influence of metallic mesh's different parameters on infrared transmitting; deduces the relational expression between infrared transmitting efficiency and metallic mesh's parameters; comes to the conclusion that we can improve infrared transmitting efficiency by increasing...