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

作者：Townsend Adrian Justin^*; Watson Robert John

来源：IEEE Transactions on Antennas and Propagation, 2011, 59(3): 994-1002.

DOI：10.1109/TAP.2010.2103021

• Attenuation
• microwave radio propagation meteorological factors
• rainfall effects

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.

• 出版日期2011-3