Dust Storm Attenuation Modeling Based on Measurements in Sudan

Elsheikh, Elfatih A. A.; Islam, Md. Rafiqul; Habaebi, Mohamed Hadi; Ismail, Ahmad Fadzil; Zyoud, Alhareth

doi:10.1109/tap.2017.2715369

Cited by 38 publications

(18 citation statements)

References 24 publications

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“… Microwave attenuation measured (solid lines with symbols) and modeled (dashed lines) shown as a function of visibility V . The data were acquired in (a) Bagdad, Iraq (Abdulla et al., 1988), and (b) Khartoum, Sudan (Elsheikh et al., 2017). The theoretical modeling is based on Rayleigh and Lorenz‐Mie theories assuming RH < 50%.…”

Section: Resultsmentioning

confidence: 99%

The Nature, Amplitude and Control of Microwave Attenuation in the Atmosphere

et al. 2021

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Microwave (MW) attenuation plays a critical role in constructing communication networks. It also can be a useful tool in the meteorological and optical communities for radar and microwave imaging applications. Because most atmospheric constituents (large hydrometeors being an exception) are very small compared to MW wavelengths, data analysis is typically performed using conventional Rayleigh theory; however, some anomalous observations have proven difficult to explain. We present the results of the first systematic numerical computations over a wide range of aerosol properties. We demonstrate that it is possible to perform mass computations of aerosol loading, which is an important climate parameter. We show that discrepancies found between theoretical predictions and observations can be attributed to the effect of the expected charge acquired by the dust particles through contact electrification occurring in dust storms. While frequencies below 10 GHz normally allow for long‐distance signal transmission, the charge‐induced resonances in particles can preferentially amplify the low‐frequency MW attenuation by a factor of 10 or more, depending on their surface electric potential. In addition, we find electrically charged particles dispersed in a local atmosphere as a potential tool for the controlled manipulation of MW attenuation.

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Section: Resultsmentioning

confidence: 99%

The Nature, Amplitude and Control of Microwave Attenuation in the Atmosphere

et al. 2021

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“…Checking with the Erceg-Sui model (Elsheikh et al, 2017) which uses equation ( 10), it works in frequency ranges from 2 GHz to 11 GHz, proposes to characterize scenarios by categories according to the following parameters: d is the distance between base and receiver in meters,  is the wavelength,  is the exponent of losses, hb is the height of the base station in meters, s is the shadowing effect and a, b, c are constants that depend on the category of the terrain (Choudhary & Dhaka, 2015). (10)…”

Section: Resultsmentioning

confidence: 99%

Software to obtain a statistical propagation model in real time

Rubio

Moreno

Rodríguez

2020

RLCT

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“…where E R is the unit pulse power of the received laser signal. Substituting equations (27) and (28) into equation (26), the received signal is…”

Section: International Journal Of Antennas and Propagationmentioning

confidence: 99%

Performance Evaluation of FSO Communications under Sand-Dust Conditions

Cao

Wang

et al. 2019

International Journal of Antennas and Propagation

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Sand-dust weather conditions are considered the primary challenge to free-space optical (FSO) communications. It may cause severe attenuation that is malignant to FSO link performance. This study investigates the impact of sand-dust particles on a laser signal using the radiation propagation method and the small-angle approximation method. Numerical simulation shows that in sand-dust weather conditions, the multiple scattering effect is dominant and results in signal pulse delay and pulse broadening. Furthermore, the signal attenuation follows a negative exponential distribution to the laser wavelength. Superior performance can be achieved by employing a longer wavelength laser to reduce pulse delay and mutual interference.

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Dust Storm Attenuation Modeling Based on Measurements in Sudan

Cited by 38 publications

References 24 publications

The Nature, Amplitude and Control of Microwave Attenuation in the Atmosphere

The Nature, Amplitude and Control of Microwave Attenuation in the Atmosphere

Software to obtain a statistical propagation model in real time

Performance Evaluation of FSO Communications under Sand-Dust Conditions

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