A Simple Two-Dimensional Ray-Tracing Visual Tool in the Complex Tropospheric Environment

Zhao, Xiaofeng; Yang, Pinglv

doi:10.3390/atmos8020035

Cited by 7 publications

(3 citation statements)

References 22 publications

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“…If earlier, to predict the radio waves propagation during tropospheric scattering, only statistical methods of accumulation and analysis of experimental data and largescale integral models of tropospheric scattering volume were used, then being more widely used deterministic methods, especially based technology ray-tracing [10]- [13]. In this technique, the rays are geometrically traced from the transmitter to the receiver, taking into account the interaction with the surrounding structures (reflection, diffraction or transmission).…”

Section: Introductionmentioning

confidence: 99%

Troposcatter Communication Link Model Based on Ray-Tracing

Ilchenko

Kravchuk

Міночкін

et al. 2018

Information and Telecommunication Sciences

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Background. At present, the demand in tropospheric over-the-horizon communication systems determines the inherent advantages of these systems over satellite and radio-relay systems of direct visibility, especially in combat and emergency situations. Although the fundamentals of the theory of tropospheric scattering were developed as early as the middle of the last century, the development of over-the-horizon systems requires constant refinements of known theoretical positions in accordance with new data on the nature of tropospheric scattering, atmospheric inhomogeneities, capabilities of new methods for calculating and estimating radio propagation. Objective. The aim of the work is to develop a radio link model of a trans-horizon tropospheric communication to study the possibility of controlling (improving) attenuation on such a route by changing the electrophysical characteristics of the environment, in particular atmospheric turbulence, or using artificial formations in the atmosphere. Methods. The created model is based on the Ray-tracing method. Results. A model of radio link losses in the over-horizon tropospheric communication (long-range tropospheric propagation) was developed, based on the ray-tracing technique in two versions: simplified, with homogeneous layers, and full, with a combination of blocks of structures of scattering spheres in each of the layers. A study of the possibility of improving attenuation along the tropospheric scattering pathway by regulating changes in the electrophysical parameters of inhomogeneities and artificial formations in the atmosphere was conducted. Conclusions. The convergence of the results of the simulation with the data obtained by known / traditional analytical models for calculating the losses on the tropospheric scattering path confirms the adequacy of the proposed model to the statistical data of the real losses in tropospheric scattering. The obtained results indicate that, for practical purposes, the accuracy of calculations of the loss characteristics is sufficient and that they can be used to form a tropospheric dispersion route with significantly reduced loss values by artificially adding a certain liquid or solid substance to the atmospheric heterogeneity.

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Section: Introductionmentioning

confidence: 99%

Troposcatter Communication Link Model Based on Ray-Tracing

Ilchenko

Kravchuk

Міночкін

et al. 2018

Information and Telecommunication Sciences

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“…In order to simulate the antenna arrays with directional elements and spatial filtering of signals which are traveled via tropospheric waveguides, ray tracing algorithm is necessary. Several algorithms have been proposed, such as [5,7,[19][20][21]. Many of them [6,[19][20][21] have the drawback that the layers of the atmosphere are considered piecewise, linearly, whereas the process of ray propagation is continuous.…”

Section: Ray Tracing Using a Second-order Ordi-nary Differential Equa...mentioning

confidence: 99%

“…Several algorithms have been proposed, such as [5,7,[19][20][21]. Many of them [6,[19][20][21] have the drawback that the layers of the atmosphere are considered piecewise, linearly, whereas the process of ray propagation is continuous. This feature is used in differentiation [7], which is taken in the case of antenna arrays.…”

Section: Ray Tracing Using a Second-order Ordi-nary Differential Equa...mentioning

confidence: 99%

Simulation Study of Digital Spatial Processing in Conditions of Tropospheric Propagation of Radio Waves for Telecommunication Applications

Peshkov

2024

PIER C

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In this paper, the propagation of electromagnetic rays in a tropospheric waveguide and spatial processing using digital antenna arrays are studied. The beam traveling through the layers of the atmosphere depends on the refractive index and its vertical change. In this regard, conditions may arise when radio rays propagate in a waveguide manner at low altitudes. In this case, attenuation takes place, and the effect of multipath fading may also occur, when several rays reflected from different layers of the troposphere and with various spatial coordinates in elevation arrive at the receiver. It is proposed to apply digital antenna arrays to increase the range and reliability of radio communication through the tropospheric waveguide. Parabolic equations are utilized to estimate the path loses of radio waves of the centimeter wavelength. A ray-tracing algorithm via a tropospheric waveguide is used to estimate the mutual phases in the aperture of the receiving array. Bit error rate curves were obtained depending on the geometry of the antenna arrays after the signal passed through the tropospheric waveguide.

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