A multipath model for atmospheric scintillations at microwaves and millimeter waves

The paper describes a deterministic model for the effects of atmospheric turbulences on satellite-earth links from 1 to 100 GHz. Turbulent cells are considered as dielectric volumes crossing the Fresnel's zones of the link. The transmission coefficients are calculated for point receivers as well as for actual aperture antennas. The model yields a transfer function submitted to the influence of the equivalent dielectric constant, the thickness, size, and geometry of the cells, the size of the antenna, and the operating frequency. The resulting group delay is also evaluated, as well as the impulse and step-responses.