Title :
Tropospheric scintillation measurements and modelling in Finland
Author :
van de Kamp, M.M.J.L. ; Tervonen, J.K. ; Salonen, E.T.
Author_Institution :
Helsinki Univ. of Technol., Espoo, Finland
Abstract :
Due to turbulent irregularities in temperature, humidity and pressure, the atmosphere exhibits small-scale variations in refractive index, which cause various refractive effects on electromagnetic waves, that can be observed as random fading and enhancement in the received signal amplitude and phase. This effect is known as `scintillation´. Generally, the impact of rain attenuation on satellite links is predominant. Scintillation however, becomes important for low fade margin systems operating at high frequencies and low elevation angles
Keywords :
tropospheric electromagnetic wave propagation; 19.8 GHz; 29.7 GHz; SHF; atmosphere; correlation; electromagnetic waves; high frequencies; humidity; low elevation angles; low fade margin systems; pressure; rain attenuation; random fading; received signal amplitude; received signal phase; refractive effects; refractive index; satellite links; small-scale variations; temperature; tropospheric scintillation measurements; tropospheric scintillation modelling; turbulent irregularities;
Conference_Titel :
Antennas and Propagation, Tenth International Conference on (Conf. Publ. No. 436)
Conference_Location :
Edinburgh
Print_ISBN :
0-85296-686-5
DOI :
10.1049/cp:19970349
