The performance of a system operating in the 20-375 THz frequency range between the Earth and
an orbiting spacecraft is affected by the atmosphere of the Earth. These atmospheric effects include
ITU-R P.1621-1-2005 history
2015ITU-R P.1621-2015 Propagation data required for the design of Earth-space systems operating between 20 THz and 375 THz
2005ITU-R P.1621-1-2005 Propagation data required for the design of Earth-space systems operating between 20 THz and 375 THz Question ITU-R 228/3
ITU-R P.1621-1-2005 Propagation data required for the design of Earth-space systems operating between 20 THz and 375 THz Question ITU-R 228/3 was changed to ITU-R P.1621-2015 Propagation data required for the design of Earth-space systems operating between 20 THz and 375 THz.