Rain Effects on Radio Frequency Propagation
Abstract
Rain is a principal cause of signal degradation in a terrestrial or satellite transmission in a frequency range from UHF to EHF. This study proceeded with a format for compiling and editing the relevant data, and for making engineering inferences to supplement relevant yet inadequate data, as required for practical applications on a terrestrial or a slant path link. The format was to model the rain-induced attenuation by an empirical relationship on a = aRb L type of power law equation. Five well recognized models (CCIR, Fedi, French, Lin and SAM) were chosen for comparison with database. As for immediate applications, the Lin model is recommended for percentage of time over 0.35 of a year; and for percentage of time less than 0.3%, the French model is considered to be applicable. For more specific applications, such as for cases of low rain- rate regions to high rain-rate regions, low elevation angle paths to high elevation angle paths, etc., best performance models are identified.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 31, 1986
- Accession Number
- ADA168342
Entities
People
- C. S. Lo
- D. J. Fang