... 40Iillumination unevenness 83improved convergence 147incident angle 3incident flux 7incident solar angle 214incident solar flux 208, 217incident solar spectrum 171incorrectness of the inverse ... processing 80initial spectrum 108 instrumental function 8, 171, 193integral operator 180integration 151intensity of radiation 2interactive regime 81internal mixture 255internal radiation ... 26–photon 49 radiation 10 – Rayleigh 109 – volume coefficient 134scattering angle 11scattering azimuth 11scattering cross-section 10 secondary processing 81, 94semi -in nite atmosphere 58,64semiautomatic...