Backscattering reciprocity for large particles

Abstract

The backscattering reciprocity theorem is considered for large particles as compared with the incident wavelength particles of arbitrary shape. It is shown that, in the specific case of faceted particles, this theorem is provided by the appearance of pairs of conjugate backscattered beams. A parameter characterizing a deviation of any approximation from the reciprocity theorem is proposed, and it is used for estimation of reliability for the physical-optics approximation.

Optical properties of quasi-horizontally oriented particles of cirrus clouds with normal and exponential distribution function over spatial orientation

“…In this study, to address the light scattering problem, we applied the physical optics method, which has been developed separately in many research groups in recent years [28][29][30][31][32]. We used our own implementation of the method developed at the Institute of Atmospheric Optics of the Siberian Branch of the Russian Academy of Sciences [33][34].…”

The technique for solving the problem of light backscattering by ice crystals of cirrus clouds by the physical optics method for a lidar with zenith scanning

“…Then, for the above-mentioned law of the distribution over orientations, the beams are sorted by the contribution to the intensity and only those contributing 99.9% (in some cases, 99.5%) are selected. At the same stage, mutual trajectories described in detail in [32,33] are determined and grouped.…”