On the Contribution of Multiple Scattering to Lidar Returns from Homogeneous Fogs and Its Dependence on the Lidar Range and on the Receiver Angular Aperture

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Abstract
For a monostatic Lidar the ratio S m/S 1 between the contribution of the mth order of scattering and the contribution of the single scattering to Lidar returns from homogeneous fogs is proportional to tm-1, where t is the time interval between the emission of the laser pulse and the instant at which the received power is considered. The results of calculation, performed for the second and the third order of scattering by choosing several models of scalar phase scattering functions, also show a simple dependence of the received power on the receiver aperture.