RECOMMENDATION ITU-R P.534-6 – Method for calculating sporadic-E field strength
Foreword
Policy on Intellectual Property Right (IPR)
Annex 1 – Propagation by sporadic E
1 Introduction
2 Formula for sporadic-E field strength
3 A procedure for calculating sporadic-E field strength
4 Probability of occurrence of foEs
     4.1 Mid-latitudes
     4.2 Low latitudes
     4.3 Global maps of foEs exceeded for annual percentage times
5 Sporadic-E prediction based on annual-statistics maps
     5.1 Derivation of foEs
     5.2 Horizon elevation angles
     5.3 Calculation for 1-hop propagation
     5.4 Calculation for 2-hop propagation
     5.5 Basic transmission loss