Terahertz and Visible Probing of Particles Suspended in Air

Prophete, Clotilde; Sik, H.; Kling, Emmanuel; Carminati, Rémi; Rosny, Julien de

doi:10.1109/tthz.2019.2891077

Cited by 3 publications

(1 citation statement)

References 17 publications

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“…Solutions involving subterahertz (sub-THz) active imaging systems are proposed to investigate wavelengths sufficient for penetrating brownout conditions. Interested readers can refer to references [161][203] [194].…”

Section: B Measurements At Terahertz Frequenciesmentioning

confidence: 99%

Earth and Martian Sand and Dust Storms: A Comprehensive Review of Attenuation Modelling and Measurements

Noreen,

Giannetti,

Lottici

2024

IEEE Access

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Sand and dust storms (SDS) are significant atmospheric phenomena that have a negative impact on wireless links operating at various frequencies. Specifically, sand and dust (SD) particles produce attenuation in propagating electromagnetic (EM) waves upon impact, which must be measured for the proper functioning of the fade mitigation strategy. The attenuation due to SDS can be reliably evaluated using specialized equipment. However, field experiments have been conducted in only a few locations and for a limited number of link geometries; therefore, the results are not immediately generalizable to all locations. Consequently, various attenuation models based on accessible meteorological data have been developed to provide sufficient inputs for system margin calculations under all environmental conditions. In this paper, we present a comprehensive review of an extensive set of Earth SDS attenuation models that differ based on various particle characteristics in terrestrial and space communication. Furthermore, we discuss how variables such as humidity and surface charges carried by the particles are addressed in the literature. We also provide the results of various field studies conducted in many parts of the world under diverse conditions to directly measure the influence of SDS on wireless communication systems. Dust is also a significant meteorological factor in the Martian atmosphere, where it affects the efficiency of the wireless sensor networks used by NASA's Mars Exploration Project. We explore how attenuation has been extrapolated in the Martian atmosphere. Additionally, we discuss future research challenges in SDS.INDEX TERMS Attenuation, Mie Scattering, Rayleigh Model, Sand and dust storm (SDS), Satellite communication.

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Section: B Measurements At Terahertz Frequenciesmentioning

confidence: 99%

Earth and Martian Sand and Dust Storms: A Comprehensive Review of Attenuation Modelling and Measurements

Noreen,

Giannetti,

Lottici

2024

IEEE Access

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Review of Techniques for Particle Spectroscopy From DC to Terahertz Frequency

Dey

2022

IEEE Trans. Instrum. Meas.

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Scattering from Spheres: A New Look into an Old Problem

Ruello

Lattanzi

2021

Electronics

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In this work, we introduce a theoretical framework to describe the scattering from spheres. In our proposed framework, the total field in the outer medium is decomposed in terms of inward and outward electromagnetic fields, rather than in terms of incident and scattered fields, as in the classical Lorenz–Mie formulation. The fields are expressed as series of spherical harmonics, whose combination weights can be interpreted as reflection and transmission coefficients, which provides an intuitive understanding of the propagation and scattering phenomena. Our formulation extends the previously proposed theory of non-uniform transmission lines by introducing an expression for impedance transfer, which yields a closed-form solution for the fields inside and outside the sphere. The power transmitted in and scattered by the sphere can be also evaluated with a simple closed-form expression and related with the modulus of the reflection coefficient. We showed that our method is fully consistent with the classical Mie scattering theory. We also showed that our method can provide an intuitive physical interpretation of electromagnetic scattering in terms of impedance matching and resonances, and that it is especially useful for the case of inward traveling spherical waves generated by sources surrounding the scatterer.

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Terahertz and Visible Probing of Particles Suspended in Air

Cited by 3 publications

References 17 publications

Earth and Martian Sand and Dust Storms: A Comprehensive Review of Attenuation Modelling and Measurements

Earth and Martian Sand and Dust Storms: A Comprehensive Review of Attenuation Modelling and Measurements

Review of Techniques for Particle Spectroscopy From DC to Terahertz Frequency

Scattering from Spheres: A New Look into an Old Problem

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