PROPAGATION MEASUREMENT IN THE VICINITY OF THE 183 GC/S WATER VAPOR LINE
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 db/km 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 1/0.18 cm is required for the 183.6 kmc water vapor line, and the peak absorption for this line is calculated to be 5.78 db/km per cubic meter for an absorption factor of 0.02736. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 05, 1962
- Accession Number
- AD0272287
Entities
People
- Charles W. Tolbert
- G.t. Coats
- R.a. Bond
Organizations
- University of Texas at Austin