Title :
Microwave propagation in relation to atmospheric parameters over different terrains of Assam Valley
Author :
Barbara, A.K. ; Devi, M. ; Timothy, K.I. ; Sharma, S.
Author_Institution :
Dept. of Phys., Gauhati Univ., Guwahati, India
Abstract :
A study on microwave propagation over six links in the 6-11 GHz frequencies was conducted over marshy, hilly and built-up areas of Assam Valley to study the terrain and environmental effects on microwave frequencies. The paper highlights occurrence of a high rate of blackouts in 6-7 GHz LOS paths running over built up areas. The fading analyses made in association with sodar returns show that hot-cold airmass fronts generate large fadings. The rain attenuation at 11 GHz shows sensitivity to dropsizes of 3.5 mm diameter and above and is generally higher than in the CCIR model
Keywords :
fading; microwave links; radiowave propagation; rain; tropospheric electromagnetic wave propagation; 6 to 11 GHz; Assam Valley; India; SHF microwave; atmosphere radiowave propagation; atmospheric parameters; blackout; built up; drop; dropsize; fading; hot-cold airmass front; microwave link; occurrence; rain; terrain factor; troposphere; urban area; Acoustic imaging; Atmospheric waves; Attenuation; Fading; Frequency; Meteorology; Microwave propagation; Physics; Rain; Rivers;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 1993. IGARSS '93. Better Understanding of Earth Environment., International
Conference_Location :
Tokyo
Print_ISBN :
0-7803-1240-6
DOI :
10.1109/IGARSS.1993.322544
