Recommendation ITU-R P.1814-1 (09/2025) - Prediction methods required for the design of terrestrial free-space optical links
Foreword
Policy on Intellectual Property Right (IPR)
Scope
Annex
TABLE OF CONTENTS
1 Introduction
2 Initial considerations in designing an FSO link
     2.1 Weather
     2.2 Path characteristics
     2.3 Transceiver mounting
3 Geometrical attenuation
4 Atmospheric attenuation
     4.1 Specific atmospheric attenuation due to absorption and scattering γatmo
      4.2 Path attenuation
      4.3 Statistical model of the total atmospheric attenuation affecting FSO links
5 Scintillation effects
6 Ambient light effect
7 Link margin calculation
8 Other issues