Title :
Prediction of tropospheric amplitude scintillation on a satellite link
Author_Institution :
Surrey Univ., Guildford, UK
fDate :
12/1/1996 12:00:00 AM
Abstract :
Semi-empirical models are presented for annual and worst-month distributions of scintillation fades, enhancements, peak-to-peak amplitude excursions, and intensity. The models utilize the well-known theoretical scaling of scintillation with signal frequency, antenna diameter, and path-elevation angle, and its empirical dependence on the wet term of atmospheric refractivity. Dependence on time percentage is obtained by detailed regression analysis of experimental scintillation data obtained at Sparsholt, UK (51.5850° N, 1.5033° W) over a one-year period using the Olympus satellite 19.7704 GHz beacon viewed at a nominal elevation of 28.74°. Results are compared where possible with the ITU-R and Moulsley-Vilar scintillation models and with Olympus measurements in Germany
Keywords :
microwave propagation; satellite communication; satellite links; scintillation; tropospheric electromagnetic wave propagation; 19.7709 GHz; Germany; ITU-R scintillation model; Moulsley-Vilar scintillation model; Olympus satellite; Sparsholt; UK; annual distributions; antenna diameter; atmospheric refractivity; enhancements; intensity; path-elevation angle; peak-to-peak amplitude excursions; prediction; satellite link; scintillation fades; semi-empirical models; signal frequency; tropospheric amplitude scintillation; worst-month distributions; Antenna measurements; Atmospheric modeling; Fluctuations; Frequency estimation; Gaussian distribution; Meteorology; Polarization; Predictive models; Refractive index; Satellites;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
