30 August 2017 Analysis research on transmitting and attenuating characteristics of non-lethal laser weapon in the fog
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Abstract
Laser has been used in the military field widely because it has some advantages, such as strong directional, fast speed, high energy and flexible accurate. Non-lethal laser weapon does not directly lead to death and equipped with destruction and the destruction of the ecological environment. It has a broad application prospect in the field of counter-terrorism ChuTu. But the laser transmission should be affected by atmospheric environment. These will affect the operational effect of non-lethal laser weapons seriously. In this paper, the influence of fog visibility of laser attenuation characteristics is studied using Mie theory based on analysis of the laser atmospheric transmission theory. Different wavelengths laser attenuation coefficient in the fog are simulated and calculated. Different wavelengths laser’s Kim attenuation model are deduced when they propagate in the fog. The relationship between attenuation coefficient and transmittance and the fog particle concentration and the transmission distance of 532nm laser are studied by simulation. The simulation results show that different wavelengths laser attenuation was sharply increased with the decreasing of fog visibility. Attenuation coefficient is as high as 40dB/km under the condition of the fog. The laser transmittance with concentration of fog drop speed greatly reduced. The laser transmittance is 40% in the 100m distance when the fog particle concentration is 20/m3. And the laser transmittance is 10% in the 200m distance. The laser transmittance is only 5% when the fog particle concentration is 100/m3.
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Ning Shan, Xia Liu, Zhi-jing Wang, "Analysis research on transmitting and attenuating characteristics of non-lethal laser weapon in the fog", Proc. SPIE 10016, High-Power Lasers and Applications VIII, 100161E (30 August 2017); doi: 10.1117/12.2245030; https://doi.org/10.1117/12.2245030
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