Theoretical and numerical investigations of the intensity of the lidar signal specular reflected from a set of oriented ice plates

The algebraic formula of the backscattering coefficient has been derived within the scope of the physical optics method. The formula relates the lidar return anomalous high amplitude of observed experimentally with the principal parameters of a polydisperse crystalline medium. It is shown that at the lidar small-angular scanning relative to the normal to the ice-plate preferred orientation, the average size of the plate can be defined and the flutter size can be evaluated from the behavior of the lidar return variation.