Electromagnetic beam propagation in turbulent media - An update

Physics – Optics

Scientific paper

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Adaptive Optics, Atmospheric Effects, Electromagnetic Wave Transmission, Scintillation, Turbulence Effects, Electromagnetic Pulses, Infrared Radiation, Interplanetary Medium, Light Transmission, Millimeter Waves, Optical Correction Procedure, Speckle Patterns, Stochastic Processes

Scientific paper

The review of electromagnetic wave propagation in turbulent media includes data on adaptive optics, intensity scintillations, pulse propagation, atmospheric measurements at visible, IR, and mm wave frequencies and speckle interferometry. New results on the second moment of the field, the tilt-corrected mutual coherence function, corrections for the phase aberrations induced by turbulence on a propagating signal, and the two-frequency coherence function are analyzed. The fourth moment of the field is investigated, deriving statistical stationary turbulence in terms of a complex Gaussian variable and the Huygens-Fresnel principle. It is concluded that the weak scintillation theory has been applied to spacecraft to deduce the nature of the electron density fluctuations on Jupiter and the properties of the neutral atmosphere on Venus, as well as revealing the details of the electron density fluctuations and wind field in the interplanetary medium near the sun.

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