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
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