Abstract

The scale, scattering and other optical properties of water droplets and ice crystals in clouds are the key factors affecting aircraft icing. Based on the superimposed scattering intensity distribution, the optical scattering model for cloud droplets and ice particles was established, the effects of different cloud types on laser backscattering were analyzed, and the backscattering coefficient and the echo power with different cloud particle concentrations were simulated and experimental measured. It was concluded that the particle backscattering of different cloud types varied greatly, especially with the increase of cloud particle concentration and the decrease of temperature. With the multi-scaled particle backscattering model for droplets and ice crystals presented here, the particle concentration of different types of clouds can be derived through mathematical inversion.

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