Zhurnal Radioelektroniki - Journal of Radio Electronics. eISSN 1684-1719. 2020. No. 7
ContentsFull text in Russian (pdf)
DOI https://doi.org/10.30898/1684-1719.2020.7.10
UDC 621.396.96
Model of interaction of VHF radio-wave radiation with forest vegetation
A. Yu. Vetluzhsky
Institute of Physical Materials Science of the Siberian Branch of the Russian Academy of Sciences, Sakhyanovoy st. 6, Ulan-Ude, 670047, Russia
The paper was received on May 18, 2020, after correction – on June 19, 2020
Abstract. A mathematical model of the interaction of electromagnetic radiation of the VHF range with forest vegetation is described. The forest medium is represented in the form of two-dimensional collections of randomly arranged cylindrical elements with random values of geometric parameters and permittivity. The calculation is carried out by the method of self-consistent equations. The main features of wave propagation in the forest environment in this range at small distances between antennas are discussed: the dependence of attenuation mainly on the density of the forest, a decrease in attenuation with increasing frequency, the possibility of resonant interaction of radiation with vegetation elements. A comparison of the results of computational and field experiments is carried out.
Key words: forest media, specific attenuation, scattering, transmission spectrum, numerical experiment.
References
1. Chuhlantsev A.A, Sutko A.M., Golovochev S.P. Attenuation of electromagnetic waves by vegetation. Journal of Communications Technology and Electronics. 2003. Vol. 48. No. 11. P. 1285-1311.
2. Wang F., Sarabandi K. An enhanced millimeter-wave foliage propagation model. IEEE Trans. Antennas and Propagation. 2005. Vol. 53. ¹ 7. P. 2138-2145.
3. Meng Y.S., Lee Y.H., Ng B.C. Study of propagation loss prediction in forest environment. Progress in Electromagnetics Research B. 2009. Vol. 17. P. 117-133.
4. Astaryan A.A. et al. Diffusion and anomalous diffusion of light in two-dimensional photonic crystals. Phys. Rev. E. 2003.Vol. 67. P. 036605 (1-8).
5. Vetluzhsky A.Yu., Lomukhin Yu.L. Excitation of the pin layer. Journal of Communications Technology and Electronics. 2004. Vol. 49. No 3. P. 282-287.
6. Korn G.A., Korn M.A. Mathematical Handbook for scientists and engineers, second edition. McGraw-Hill Book Company, 1968. 1130 p.
7. Basanov B.V., Vetluzhsky A.Yu., Kalashnikov V.P. Method for determining the effective permittivity of the forest canopy. Zhurnal Radio electroniki – Journal of Radio Electronics. 2010. No.4. Available at http://jre.cplire.ru/jre/apr10/3/text.pdf (In Russian)
For citation:
Vetluzhsky A.Yu. Model of interaction of VHF radio-wave radiation with forest vegetation. Zhurnal Radioelektroniki - Journal of Radio Electronics. 2020. No. 7. https://doi.org/10.30898/1684-1719.2020.7.10 (In Russian)