Accession Number:

AD0272287

Title:

PROPAGATION MEASUREMENT IN THE VICINITY OF THE 183 GC/S WATER VAPOR LINE

Descriptive Note:

Corporate Author:

TEXAS UNIV AUSTIN ELECTRICAL ENGINEERING RESEARCH LAB

Personal Author(s):

Report Date:

1962-02-05

Pagination or Media Count:

1.0

Abstract:

Recent investigations of atmospheric water vapor absorption at frequencies of 172, 183.6, and 194 kmc have produced values of 1.755, 4.15, and 0.881 dbkm per cubic meter, respectively. It was found that the Van Vleck-Weisskopf equation predicts the same attenuation if it is assumed that the measured frequency was in error by kmc. Under this assumption, a line breadth constant of 10.18 cm is required for the 183.6 kmc water vapor line, and the peak absorption for this line is calculated to be 5.78 dbkm per cubic meter for an absorption factor of 0.02736. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE