Aperture averaging of scintillation for spacetoground optical communication applications
Abstract
It is pointed out that the amount of scintillation which a communication system must deal with is a function of the diameter of the collecting entrance pupil in the ground station optical system. Increasing the size of the aperture diameter reduces the amount of scintillation measured by the detector. The aperture averaging factor is defined as the ratio of the variance of irradiance obtained from a collecting aperture of finite size to the corresponding quantity obtained from a point aperture. The aperture averaging factor is calculated here for both spherical and plane waves.
 Publication:

Applied Optics
 Pub Date:
 June 1983
 DOI:
 10.1364/AO.22.001608
 Bibcode:
 1983ApOpt..22.1608Y
 Keywords:

 Atmospheric Turbulence;
 Ground Stations;
 Optical Communication;
 Scintillation;
 Space Communication;
 Turbulence Effects;
 Apertures;
 Atmospheric Optics;
 Average;
 Coherent Radiation;
 Electromagnetic Noise Measurement;
 Irradiance;
 Numerical Integration;
 Plane Waves;
 Satellite Transmission;
 Spherical Waves;
 Communications and Radar;
 SCINTILLATION;
 OPTICAL COMMUNICATIONS