"JOURNAL OF RADIO ELECTRONICS" (Zhurnal Radioelektroniki ISSN 1684-1719, N 9, 2017

contents             full textpdf   

Analysis of numerical simulation of radio wave scattering on composite cylinder and truncated cone

 

A. A. Afonin, V. A. Timofeev

P.G.Demidov Yaroslavl State University, Sovetskaya 14, Yaroslavl 150003, Russia

 

The paper is received on April 3, 2017, after correction - on July 20, 2017

 

Abstract. The paper is devoted to simulation of the electromagnetic interaction with the forest environment. The modeling results of radiowave scattering by the finite length obstacles are represented. The objects of two shapes have been examined. The first of them was composed from homogeneous coaxial cylinders. The other obstacle was the truncated cone. There models can be used for simulation of the vegetation components. The numerical results have been obtained on the basis of the method of discrete sources for microwave frequencies. The scatterer parameters corresponded to complex permittivity of trees at this band. The angular dependencies of the scattered field have been studied. The effects of angle of incidence, different ratios of the geometric dimensions of the obstacles and wavelength have been carried out. The modeling results have been considered both for the case when the cylinder length was larger of wavelength and for the case when the cylinder length was smaller of wavelength. It has been found that the behavior of the angular dependencies for the composite cylinder have been observed more complicate pattern. This is due to edge cylinders diffraction. Therefore, the simulation of the components of the forest environment by only homogeneous coaxial cylinders can lead to significant errors.

The numerical calculations have been carried out by TITAN X GPU supported by NVIDIA Corporation.

Key words: radiowave scattering, homogeneous coaxial cylinders, truncated cone, vegetation, method of discrete sources.

References

1.       Dorzhiev B.Ch., Pletnev V.I., Khomyak E.M. Weak attenuation of meter waves propagating in the forest environment. Rasprostranenie elektromagnitnykh voln: sbornik statei [Propagation of electromagnetic waves: a collection of articles]. Ulan-Ude, 1987, pp.87-103. (In Russian)

2.       Bagdasaryan E.A., Timofeev V.A. Analysis of the intensity of the electromagnetic field formed by the two-beam mechanism of wave propagation, behind the canopy of the vegetation layer. Telekommunikatsii - Telecommunications. 2006, No.1, pp.35-39. (In Russian)

3.       Chukhlantsev A.A., Shutko A.M., Golovachev S.P. Attenuation of Electromagnetic Waves by Vegetation Canopies. Journal of Communications Technology and Electronics, 2003, v.48, No.11, pp.1177-1202.

4.       Ulaby F.T., Sarabandi K., McDohald K., et al. Michigan microwave canopy scattering model. Int. J. Remote Sensing, 1990, v.11, No. 7, pp. 1223-1253.

5.       Chukhlantsev A.A. Microwave radiometry of plant cover. Dissertation for the degree of Doctor of Physical and Mathematical Sciences, Moscow, 2004. (In Russian)

6.       Van de Hulst H. C. Light Scattering by Small Particles. Reprint of the John Wiley & Sons, Inc., New York, 1957 edition, 496 p.

7.       Ulaby F.T., El-Rayes M.A. Microwave dielectric spectrum of vegetation Part II: Dual dispersion model.  IEEE Trans. Geosci. Remote Sensing, vol. GE-25, No. 5, pp. 550-557, Sept. 1987.

8.       Eremin Yu.A., Sveshnikov A.G. The method of discrete sources in problems of scattering of electromagnetic waves. Uspekhi sovremennoi radioelektroniki - Telecommunications and Radio Engineering, 2003, No. 10, p. 3. (In Russian)

9.       Eremin Yu.A., Sveshnikov A.G. Analysis by the method of discrete sources of diffraction of electromagnetic waves on three-dimensional scatterers.  Computational Mathematics and Mathematical Physics, 1999, v. 39, No 12, pp. 19671980.

10.  Afonin A.A. Timofeev V.A. Modeling of microwave scattering from cylindrical objects using discrete sources method. Trudy XX mezhdunarodnoi nauchno-tekhnicheskoi konferentsii "Radiolokatsiya, navigatsiya, svyaz'" [Proceedings of the XX International Scientific and Technical Conference "Radiolocation, Navigation, Communication" (RLNC*2014)]. Voronezh. 2014. v.1. pp.395-402. (In Russian)

11.  Afonin A.A. Timofeev V.A. Modeling angular characteristics of microwave scattering on a composite cylindrical objects. Trudy XXII mezhdunarodnoi nauchno-tekhnicheskoi konferentsii "Radiolokatsiya, navigatsiya, svyaz'" [Proceedings of the XXII International Scientific and Technical Conference "Radiolocation, Navigation, Communication" (RLNC*2016)]. Voronezh. 2016. v.2. pp.715-722. (In Russian)

 

For citation:

A. A. Afonin, V. A. Timofeev. Analysis of numerical simulation of radio wave scattering on composite cylinder and truncated cone. Zhurnal Radioelektroniki - Journal of Radio Electronics, 2017, No. 9. Available at http://jre.cplire.ru/jre/sep17/1/text.pdf. (In Russian)