TELKOMNIKA Telecommunication, Computing, Electronics and Control
Effects of humidity on sand and dust storm attenuation predictions based on 14 GHz measurement

TELKOMNIKA Telecommunication, Computing, Electronics and Control
Effects of humidity on sand and dust storm attenuation predictions based on 14 GHz measurement

Complex permittivity
Dust storm attenuation
Humidity
Microwave propagation
Visibility

Several models were proposed to predict the attenuation of microwave signals
due to sand and dust storms. Those models were developed based on
theoretical assumptions like Rayleigh approximation, Mie equations or
numerical methods. This paper presents a comparison between attenuation
predicted by three different theoretical models with measured attenuation at
14 GHz. Dielectric constant of dust particles is one of the important parameter
in prediction models. This constant is estimated from measured dust samples
and is utilized for predictions. All models are found largely underestimating
the measurement. Humidity is also monitored and has been observed higher
during dust storm. Hence dielectric constants are re-estimated with relative
humidity conditions using available conversion model. The prediction has a
great impact of humidity and predicted attenuations are found much higher in
humid than dry dust condition. However, all models underestimate the
measurement even considering 100% of relative humidity. Hence it is
recommended to investigate the models by considering humidity and other
environmental factors that change during dust storm.

Eltahir Idris Eltahir Mohamed, Elfatih A. A. Elsheikh, A. Awad Babiker, Islam Md. Rafiqul, Mohamad Hadi Habaebi, Aisha H. Abdulla, Elessaid Saad

http://journal.uad.ac.id/index.php/TELKOMNIKA

Sep 30, 2020

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