  The channel modeling of unnamed aerial vehicle (UAV)-based free-space optical
(FSO) links with nonzero boresight pointing error is the subject of this paper.
In particular, utilizing log-normal turbulence model, we propose a novel
closed-form statistical channel model for UAV-based FSO links that takes into
account the effect of nonzero boresight pointing errors. Subsequently,
utilizing Gamma-Gamma turbulence model, we propose a novel channel
characterization for such links that is valid under moderate to strong
turbulence conditions. The accuracy of the proposed models is verified via
Monte-Carlo simulations. The proposed models are more tractable and suitable
for analysis of such UAV-based FSO links.
