Electromagnetic Transmission for Dust Clouds in X-band and Ka-band

To study and prevent the hazards of dust clouds, this paper is going to study the transmission characteristics of dust clouds to understand the influence rule and mechanism of dust on electromagnetic wave propagation and to improve the accuracy of dust weather forecasts. The electromagnetic wave scattered by dust clouds is numerically analyzed in this paper using the Mie scattering theory. The incident field and the scattering field are presented. The transmission coefficient in which the water content of dust particles has been included is solved. Scattering parameter changes with the water content and the frequency in X-band and Ka-band are obtained using deviation calculation based on the original data which is extracted from the vector network analyzer. The electromagnetic transmission characteristics of dust particles are studied and the effects of dust particle density on the transmission characteristics are investigated. Results show that Scattering parameter attenuation of the electromagnetic transmission in dust clouds increases with dust particle density, and decreases with the increase of visibility. The S
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parameter attenuation first increases rapidly as the water content increases, reaching a peak and then slowly decreasing. The impact of the water content on the S
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parameter attenuation has a complex relationship with the electromagnetic wave frequency and dust particle density, which need to be discussed further. In X-band and Ka-band, the error induced by the frequency can be neglected. It is concluded that the error induced by the water content arrives at 20 ~ 30% between the simulation and experiment results, which presents an academic reference for a dust storm warning system.