Title :
Experimental study of radiowave propagation effects in the millimetre-wave band
Author :
Douchin, N. ; Lemorton, J. ; Sauvageot, H. ; Marsault, T.
Author_Institution :
ONERA-CERT, Toulouse, France
Abstract :
This paper deals with the CELESTE experiment which is dedicated to the assessment of propagation effects observed in the EHF band (34.5 GHz) on a low-elevation path. These effects are principally due to absorption and scattering by raindrops, but also by atmospheric gases (mainly H2O and O2) and particles in clouds, and lead essentially to attenuation and depolarisation of the wave along the path. The main objectives of this experiment are first explained and then the current experimental set-up and its future evolution are described. The paper also reports on the statistical analysis of radiowave and rain data: the comparison with various prediction models indicates that the measured attenuation distributions are largely below the predicted ones for time percentages less than 0.1%
Keywords :
millimetre wave propagation; 34.5 GHz; CELESTE experiment; EHF band; H2O; O2; absorption; atmospheric gases; clouds; experimental study; low-elevation path; measured attenuation distributions; millimetre wave band; particles; prediction models; propagation effects; radiowave data; radiowave propagation effects; rain data; raindrops; scattering; statistical analysis; time percentages;
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:19970406
