search

bwinkel / pycraf

pycraf is a package that provides functions and procedures for various tasks in spectrum-management compatibility studies.
35 stars 18 forks source link

Question on collision induced absorption ... #34

Closed RB61 closed 3 years ago

RB61 commented 4 years ago

Are collision induced absorption effects included in pycraf?

bwinkel commented 4 years ago

Not that I'm aware of. pycraf has all propagation mechanisms implemented, which are subject to ITU-R Rec. P.452-16 and ITU-R Rec. P.676-10.

Do you have more information about it?

RB61 commented 4 years ago

Thanks, I will take a close look at tthe ITU-R Rec. P.452-16 and ITU-R Rec. P.676-10 documentation and compare with https://hitran.org/ data.

bwinkel commented 4 years ago

HITRAN seems to be aimed at calculating radiative transfer in the atmosphere, so one should compare with P.676. I'm not sure, if HITRAN also covers radio wavelengths (below 1 THz), but if it does, it seems certainly more sophisticated than the ITU model. P.452 includes effects such as diffraction at terrain features, tropospheric scatter and more. So it's definitely something different.