Abstract
In this paper we present an experimental validated system for measuring rainfall due to radio frequency (RF) signal attenuation at 2 GHz. Measurements took place in Ioannina, NW Greece, starting in April 2015 and lasting for twelve months. The primary acquired extensive results have shown reliable and accurate measurements for rainfall amounts smaller than 1 mm for 5 min periods. The very important innovation is that this paper presents significant earth-to-earth measurements due to rainfall attenuation (at 2 GHz) in order to act as a map for future investigation and as a prior knowledge for the behavior of other systems operating at frequencies around S-band.
Highlights
Extreme precipitation is one of the most significant research subjects in climatology during the last decades [1] and it is associated with the ongoing climatic change [2]
The very important innovation is that this paper presents significant earth-to-earth measurements due to rainfall attenuation in order to act as a map for future investigation and as a prior knowledge for the behavior of other systems operating at frequencies around S-band
The rainfall amount was 0.2 mm and occurred on 16 November 2015 between 07:25 and 07:30, after a long dry period of about 10 days
Summary
Extreme precipitation is one of the most significant research subjects in climatology during the last decades [1] and it is associated with the ongoing climatic change [2]. NW Greece, is a mountainous area with very complicated relief and it is characterized by high spatial variability of precipitation [4], which cannot be satisfactorily analyzed by using the measurements of the existent rain-gauge network. The question arises as to whether or not we can improve precipitation’s spatial precision of conventional rain gauges by using radio frequency (RF) signals data attenuation due to precipitation. To answer this question we must first prove that it is possible to measure rainfall precipitation for wavelengths greater than 3 cm
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