DocumentCode :
981916
Title :
Propagation through the atmosphere at a wavelength of 3.3mm
Author :
Shimabukuro, Fred I.
Author_Institution :
Aerospace Corp., El Segundo, CA, USA
Volume :
14
Issue :
2
fYear :
1966
fDate :
3/1/1966 12:00:00 AM
Firstpage :
228
Lastpage :
235
Abstract :
The general propagation characteristics of 3.3-mm waves through the atmosphere are determined. The measured absorption of the atmosphere is in fair agreement with the Van Vleck-Weisskopf theory. An approximation for the zenith attenuation in decibels through the atmosphere is 
, where 
is the precipitable water in centimeters. The effects of varying attenuation on the determination of the brightness temperature of extraterrestrial sources is considered. The usual radio refraction expression appears adequate for 3.3-mm waves for zenith angles less than 70 degrees.
, where is the precipitable water in centimeters. The effects of varying attenuation on the determination of the brightness temperature of extraterrestrial sources is considered. The usual radio refraction expression appears adequate for 3.3-mm waves for zenith angles less than 70 degrees.Keywords :
Millimeter-wave propagation; Absorption; Antenna measurements; Antennas and propagation; Atmosphere; Atmospheric measurements; Attenuation; Instruments; Radiometry; Signal to noise ratio; Wavelength measurement;
fLanguage :
English
Journal_Title :
Antennas and Propagation, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-926X
Type :
jour
DOI :
10.1109/TAP.1966.1138662
Filename :
1138662
Link To Document :
