DocumentCode :
1011988
Title :
Variability of EHF air refractivity with respect to temperature, pressure, and frequency
Author :
Liebe, Hans J. ; Hopponen, Jerry D.
Author_Institution :
Inst. for Telecommunication Sci., Office of Telecommunications, US Dept. of Commerce, Boulder, CO USA
Volume :
25
Issue :
3
fYear :
1977
fDate :
5/1/1977 12:00:00 AM
Firstpage :
336
Lastpage :
345
Abstract :
EHF transfer properties of air are expressed by a complex refractivity 
, yielding phase dispersion and attenuation due to the microwave spectrum of oxygen. Based upon an experimetally verified theory (Rosenkranz band shape), the variability of with respect to temperature, pressure, and frequency variations is analyzed across the 40 to 140 GHz band for atmospheric conditions up to 40 kilometers in altitude ( 
K, 760-5 torr). The discussion centers on the usefulness of such information when treating problems of possible propagation limitations imposed by turbulent air and of remote sensing atmospheric states.
, yielding phase dispersion and attenuation due to the microwave spectrum of oxygen. Based upon an experimetally verified theory (Rosenkranz band shape), the variability of with respect to temperature, pressure, and frequency variations is analyzed across the 40 to 140 GHz band for atmospheric conditions up to 40 kilometers in altitude ( K, 760-5 torr). The discussion centers on the usefulness of such information when treating problems of possible propagation limitations imposed by turbulent air and of remote sensing atmospheric states.Keywords :
Millimeter-wave radio propagation meteorological factors; Attenuation; Dispersion; Electromagnetic wave absorption; Frequency; Optical propagation; Quantum mechanics; Refractive index; Remote sensing; Temperature; Water;
fLanguage :
English
Journal_Title :
Antennas and Propagation, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-926X
Type :
jour
DOI :
10.1109/TAP.1977.1141587
Filename :
1141587
Link To Document :
