Accession Number : AD0666916

Title :   OXYGEN ABSORPTION IN THE BAND FROM 53.4 TO 56.4 GHZ.

Descriptive Note : Rept. for Dec 64-Oct 67,

Corporate Author : AEROSPACE CORP EL SEGUNDO CALIF LAB OPERATIONS

Personal Author(s) : Carter,C. J. ; Mitchell,R. L. ; Reber,E. E.

Report Date : OCT 1967

Pagination or Media Count : 61

Abstract : The report summarizes the findings of an extensive study (December 1964 through June 1967) of the phenomenon of absorption of electromagnetic energy in the atmosphere by oxygen. Purpose of the study was to make sufficient measurements in the oxygen absorption spectrum (50 to 70 GHz) to confirm or refine the existing theory as necessary. New values for the Van Vleck line broadening coefficients have been calculated, based on 1500 independent attenuation measurements made over a slant range from space to various altitudes in the atmosphere, on a frequency range of 53.4 to 56.4 GHz and an altitude range from 0 to 45,000 ft (14.75 km). The average relative error between the measured and the calculated attenuation is 8.6 percent. A similar comparison based on Meeks and Lilley's line broadening coefficients yielded an average relative error of 13 percent. (Author)

Descriptors :   (*OXYGEN, ABSORPTION SPECTRA), (*ELECTROMAGNETIC RADIATION, ABSORPTION), RADIOMETERS, CALIBRATION, PERFORMANCE(ENGINEERING), ATTENUATION, MILLIMETER WAVES, ATMOSPHERES, STATISTICAL ANALYSIS

Subject Categories : Atmospheric Physics
      Radiofrequency Wave Propagation

Distribution Statement : APPROVED FOR PUBLIC RELEASE