ITU-R F.1404-1 SPANISH-2002
在固定业务系统和广播卫星,移动卫星和太空科学业务系统之间用于频率共享研究的大气层产生的最小传播衰减

Minimum propagation attenuation due to atmospheric gases for use in frequency sharing studies between systems in the fixed service and systems in the broadcasting-satellite mobile-satellite and space science services

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标准号

ITU-R F.1404-1 SPANISH-2002

发布日期

2002年01月01日

实施日期

废止日期

无

中国标准分类号

M75

发布单位

IX-ITU

引用标准

ITU-R P.835 ITU-R P.676 ITU-R P.676-3-1997 ITU-R P.835-2-1997 ITU-R F.1333

被代替标准

ITU-R F.1404-1-1999

适用范围

Slant path attenuation between a terrestrial station and a space station (GSO or non-GSO) resulting from absorption due to atmospheric gases including water vapour is an important factor in frequency sharing studies between FS systems and BSS, MSS and space science service systems. The slant path attenuation depends on the distribution along the path of meteorological parameters such as temperature, pressure and humidity, and thus varies with the geographic location of the site, the month of the year, the height of an FS station above sea level and the elevation angle of the slant path and the operating frequency. The procedure for calculating the slant path attenuation is the line-by-line procedure given in Annex 1 to Recommendation ITU-R P.676.