Abstract
The paper describes a model which predicts the effects of tropospheric turbulence on communication systems. Turbulent eddies are represented by cells crossing the Fresnel's zones of the earth-space link, with parameters determined from the physics of clouds and ground meteorological measurements. From this representation, the transfer function of the turbulent atmosphere is calculated as a function of the parameters of the liaison, as well as the corresponding scintillation. An inversion process then synthesises a turbulent layer statistically compatible with the actually measured scintillation, and from which the effects on communication systems can be evaluated. The inversion process is validated by data measured on the Olympus satellite of the European Space Agency. Hence, from scintillation measured on a satellite beacon at one frequency, a turbulent layer is synthesised, which yields the prediction of scintillation at other frequencies with other antennas, as well as the effect on any communication link, analogue or digital.
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