Calcul des affaiblissements en propagation transhorizon a partir des paramètres radiométéorologiques

Battesti, Joan; Boithias, Lucien; Misme, Pierre

doi:10.1007/bf02999791

Cited by 2 publications

(1 citation statement)

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“…Three scattering propagation mechanisms were proposed [8]: turbulent incoherent scattering, irregular-layer incoherent reflection, and steadylayer coherent reflection. By combining tropospheric scattering link data with scattering mechanisms, various semiempirical models of tropospheric scattering losses have been developed, such as the NBS method of the U.S. National Bureau of Standards [13], the "French method" proposed by French scientists Battesti et al [14], and the "Chinese" method proposed by Zhang [8] as an alternative to the NBS method (adopted as International Telecommunication Union (ITU)-R P.617-1 method [15], the latest version is ITU-R P.617-5 [16]). In addition to the semiempirical calculation models, multiple loss prediction models based on the scattering propagation mechanism have been generated, such as Zhang's method for calculating the convective layer scattering transmission loss based on the generalized scattering cross section [8],…”

Section: Introductionmentioning

confidence: 99%

A New Model for Estimating Troposcatter Loss and Delays Based on Ray-Tracing and Beam Splitting With ERA5

Zhang

Chen

Liu

et al. 2022

IEEE Trans. Antennas Propagat.

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The atmospheric environment is one of the critical factors affecting troposcatter transmission loss and propagation delay. This article proposes a new estimation model that can accurately calculate troposcatter transmission loss and propagation delay with a numerical weather model (NWM). The ERA5 reanalysis data as the NWM are applied to construct the new model. The 3-D ray-tracing and beam splitting are used to calculate propagation paths and delays. Compared with the existing methods, the new model thoroughly considered the bending and delaying effects of the atmospheric environment on electromagnetic waves, resulting in more accurate estimates. The transmission loss calculation capability of the new model is compared with the International Telecommunication Union (ITU) model and the terrestrial trans-horizon propagation loss data banks. The propagation delay calculation capability is compared with the Bello model. These comparison results show that the new model sufficiently reflects the meteorological environment's influence on transmission loss and propagation delay. Finally, the daily variation characteristics of losses and delays are analyzed using the new model and further validate the model performance.

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Section: Introductionmentioning

confidence: 99%