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The Linear Relationship Between Attenuation and Average Rainfall Rate for Terrestrial Links

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2 Author(s)
Adrian Justin Townsend ; Department of Electrical and Electronic Engineering, University of Bath, Bath, UK ; Robert John Watson

Attenuation measured on terrestrial links can be used to estimate surface rainfall rates along a link path. There is current interest in the use of inverse methods to estimate rainfall over areas inferred from terrestrial links. A power-law relationship can be used to estimate rainfall rate from attenuation measured by a terrestrial link. However, the inverse method is simplified with a linear relationship between attenuation and rainfall rate when determining path averaged rainfall rates. This paper investigates power-law and linear relationships between rainfall rate and attenuation. It examines their goodness of fit for a range of frequencies and rainfall rates. Six years of disdrometer data from Chilbolton in the U.K. has been used to study both linear and power-law fits to attenuation and quantify the associated errors.

Published in:

IEEE Transactions on Antennas and Propagation  (Volume:59 ,  Issue: 3 )