不同波长激光在典型气溶胶粒子中的传输特性

In the battlefield environment, the detection ability of pulsed laser fuze is easily interfered by aerosol particles, causing false alarms and missing alarms. In order to study the laser transmission characteristics of pulsed laser fuze in aerosol, the extinction and scattering characteristics of sand-dust aerosol particles, water-soluble aerosol particles, marine aerosol particles and soot aerosol particles were modeled and simulated based on Mie scattering theory. The influences of different parameters on the efficiency factors and scattering phase functions of four typical aerosol particles were obtained by changing the particle size at 0.905 μm, 4.7 μm and 6.8 μm laser wavelengths. The simulated results show that the particle size and wavelength affect the efficiency factor and scattering phase function of aerosol particles. The larger the particle size is, the more stable the efficiency factor is, and the weaker the backscattering ability of aerosol particles is. If the wavelength is longer, the change in the peak of the aerosol efficiency factor is different, but the particle size corresponding to the peak is larger.