Title :
Calculation of absorption and dispersion spectra of atmospheric gases: at millimetre-wavelengths
Author :
Papatsoris, A.D. ; Watson, P.A.
Author_Institution :
Dept. of Electr. Eng., Bradford Univ., UK
fDate :
12/1/1993 12:00:00 AM
Abstract :
Absorption and dispersion spectra of the most important and millimetre-wave active atmospheric gases for arbitrary atmospheric paths are calculated. The atmospheric propagation model (APM) adopts a line by line summation technique too characterise the resultant resonant absorption and dispersion spectra of various trace constituents such as O3, N2O, CO, NO, NO2, SO2, ClO, HNO3, NH3 and major contributors H2O and O2. The model assumes a spherically layered atmosphere with each layer taken to be in local thermodynamic equilibrium and with exponential profiles of density and pressure between layer boundaries. The relative air mass integral and the line shape function are also appropriately evaluated
Keywords :
atmospheric electromagnetic wave propagation; atmospheric spectra; electromagnetic wave absorption; radiowave propagation; CO; ClO; H2O; HNO3; N2O; NH3; NO; NO2; O2; O3; SO2; absorption; atmospheric gases; atmospheric paths; atmospheric propagation model; density; dispersion spectra; line by line summation technique; line shape function; local thermodynamic equilibrium; millimetre-wavelengths; pressure; relative air mass integral; resonant absorption; trace constituents;
Journal_Title :
Microwaves, Antennas and Propagation, IEE Proceedings H
