Title :
Polarization independence of tropospheric scintillation in clear sky: results from Olympus experiment at Spino d´Adda
Author :
Matricciani, Emilio ; Riva, Carlo
Author_Institution :
Dipt. di Elettronica e Inf., Politecnico di Milano, Italy
fDate :
9/1/1998 12:00:00 AM
Abstract :
Tropospheric scintillation plays an important role in low availability systems using frequencies above 10 GHz. The results presented show that amplitude scintillation is independent of polarization, as long as the transversal dimension of the first Fresnel zone is of the order of few meters as is the case in satellite systems working in the SHF or EHF bands. The results are based on high-resolution time series (50 samples/s) of vertical- and horizontal-polarized 19.77-GHz scintillation amplitude recorded at Spino d´Adda (45.4°N) in clear sky (no rain) in a 30.6° slant path to the satellite Olympus in August and September 1992
Keywords :
electromagnetic wave polarisation; microwave propagation; satellite communication; scintillation; time series; tropospheric electromagnetic wave propagation; 19.77 GHz; EHF band; Olympus experiment; SHF band; Spino d´Adda; amplitude scintillation; clear sky; first Fresnel zone; high-resolution time series; horizontal-polarized scintillation amplitude; low availability systems; polarization independence; satellite systems; slant path; transversal dimension; tropospheric scintillation; vertical-polarized scintillation amplitude; Antenna accessories; Antenna measurements; Antennas and propagation; Electromagnetic scattering; Impedance; Microwave theory and techniques; Optical scattering; Polarization; Probes; Receiving antennas;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
