Annex 1
1 Introduction
2 Absorption losses
3 Scattering losses
3.1 Attenuation of the
transmitted signal due to Mie scattering
3.2 Increases in
background noise due to Rayleigh scattered solar energy
4 Effects of turbulence on
systems operating between 20 THz and 375 THz
4.1 Amplitude
scintillation
4.1.1 Amplitude
scintillation on paths in the Earth-to-space direction
4.1.2 Amplitude
scintillation on paths in the space-to-Earth direction
4.2 Angle of arrival
4.3 Beam wander
4.4 Beam spreading
Annex 2 Detailed calculation of attenuation due to Rayleigh
and Mie scattering