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Anti-invisible burning laser technology

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There are many similarities between anti - laser stealth and radar stealth. Both of them adopt the related shape design technology and material technology to reduce the scattering cross section area and scattering wave intensity of the target, so as to achieve the purpose of stealth. Anti-laser stealth uses shape design techniques to eliminate angular reflection effects that shape combinations can produce. For example, in the design of aircraft, the wing body fusion structure and v-shaped tail are used to eliminate the parts that may produce angular reflection effect; The slanted double vertical tail structure is used to process the lateral incident light, and the swept wing and delta wing structure are used to process the lateral incident light. Frontal incident light; The principle of use is that the size of the cross-sectional area of the invisible burning Laser pointer scattering is directly related to the geometry of the area in which the shape of the target plate is used to replace the geometry or one part is used to block the other part to reduce the scattering source and the intensity of the scattered light on the target.

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Long wave low frequency radar. Long wave low frequency radar can counter absorbing materials in stealth technology. Theoretical analysis shows that when the wavelength of radar signal is close to any part of the size of the detected target, the direct reflection of the target and the surrounding electromagnetic wave will generate resonance, forming a strong echo signal, which is easy to be detected. In addition, multi-frequency radar, ultra-wideband pulse radar, harmonic radar, lidar and radar networking technologies can also be used to detect stealth aircraft. Ultra-short pulse ultra-fast laser is selected for invisible-burning-laser stealth cutting equipment. In addition to the above requirements for invisible burning laser wavelength, stealth cutting technology also requires the use of very short pulse width, high peak power, high pulse repetition rate of the laser. For example, the WL200Plus uses 400 FS pulse width lasers based on SESAM, Kerr lens, and other mode locking techniques. Most of the devices use adaptive optics and high precision real-time focusing correction system (DRA).

2021-09-17 12:47:30

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