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Communications, Radar & Electronic Warfare (201.. - Index of

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218Communi15Gaseous absorptionE.!I!.Ciia.en2-coc5::lC101 0 1cou;;::::UQla.(f)0010001- .ĪI,,,,f\ / " tIj iI .III , .I/: ,r.I--- Total lossl- • - • - . Dry air- - - - -Water,,VJV.jI'·1I'·t! I: 'II, ,, .1 GHz 10 GHz 100 GHz 350 GHzFigure 11.15 Approximation <strong>of</strong> gaseous absorption based on ITU-R P676.3028262422E;ij 20"018c 160 14::l 12cQl 10t:« 86420Rain attenuation dB/km""" .. ' , '../ ... . , --..:..: -:-., , -- - -""';;',-:'- ',' -- . - ' ;, . .. . . ::....---- - - . . . . . - ..h"" :...:?"": - -:-:'" . . . -_.--- -- .. .. --... .. . -- , -.-.-- - -A· ';" · -:;:-- _ - -. . . . . ..- ; :-...: = : :-...:o 10 20 30 40 50 60 70 80 90 100Rain rate mm/h1 OGHz Vertical pol1 OGHz HOrizontal pol20GHz Vertical pol- - 20GHz HOrizontal pol__ 30GHz Vertical pol- • • 30GHz HOrizontal pol- - .40GHz Vertical pol- • • 40GHz HOrizontal pol- -50GHz Vertical pol--50GHz HOrizontal polFigure 11.16Rainfall attenuation for different frequencies and polarizations.

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