UDC 621.396.961

Attenuation factor calculation for backscattering from the terrain using the parabolic equation technique

 

V. V. Akhiyarov

Scientific and Research Institute for Long-Distance Radio Communications,
8 March str., Moscow 127023, Russia

The paper is received on September 16, 2019

Abstract. The paper is devoted to the problem of calculating the attenuation factor taking into account the backscattering of radio waves from the terrain. It is found that the distance dependences of the backscattering attenuation factor correspond to the same field attenuation curves in the forward direction both for a flat earth model and for an arbitrary terrain profile. It is shown that it is not necessary to solve the backscattering problem for modeling reflections from the terrain at VHF repeatedly.

Key words: radio wave propagation, backscattering from the terrain, parabolic equation method, radar equation.

References

1.     Fock V.A. Problemy difrakcii i rasprostranenija jelektromagnitnyh voln [Electromagnetic diffraction and propagation problems]. Moscow, Sov. Radio Publ. 1970. 520 p. (In Russian)

2.     McNamara D.A., Pistorius C.W.I., Malherbe J.A.G. Introduction to the Uniform Geometrical Theory of Diffraction. Artech House. 1990. 471 p.

3.     Akhiyarov V.V. Diffraction of the VHF and UHF radiowaves above the earth’s surface. Elektromagnitnye volny i elektronnye sistemy - Electromagnetic waves and electronic systems. 2006. Vol.11. No.9. P.28-32. (In Russian)

4.     Akhiyarov V.V. The Radio Waves Propagation and Scattering.  Uspehi sovremennoj radiojelektroniki - Achievements of modern radioelectronics. 2008. No.12. P.3-25. (In Russian).

5.     Akhiyarov V.V. The asymptotic solution of the single and multiple diffraction problems. Elektromagnitnye volny i elektronnye sistemy - Electromagnetic waves and electronic systems. 2013. Vol.18. No.7. P.4-11. (In Russian)

6.     Hviid, J.T., Andersen, J.B., Toftgard, J. Terrain-based Propagation Model for Rural Area – an Integral Equation Approach. IEEE Transaction on Antennas and Propagation. 1995. Vol.43, No.1. P.41-46.

7.     Akhiyarov V.V. Numerical solution of a radiowaves diffraction problem over irregular terrain.  Elektromagnitnye volny i elektronnye sistemy - Electromagnetic waves and electronic systems. 2010. Vol.15. No.3. P.39-46. (In Russian)

8.     Levy ̀.F. Parabolic equation method for electromagnetic wave propagation. London. IEE. 2000. 336 p.

9.     Akhiyarov V.V. Parabolic Equation Method in the Diffraction Theory. Uspehi sovremennoj radiojelektroniki - Achievements of modern radioelectro. 2010. No. 9. P.72-80. (In Russian)

10. Akhiyarov V.V., Chernavskiy S.V. Usage of Numerical Methods for the Radio Waves Propagation Studying. Radiotehnika – Radioengineering. 2011. No.10, P.100-110. (In Russian)

11. Akhiyarov V.V. Path loss prediction over irregular terrains based on parabolic equation.  Zhurnal Radioelektroniki - Journal of Radio Electronics. 2012. No.1. Available at: http://jre.cplire.ru/jre/jan12/16/text.pdf (In Russian).

12. Akhiyarov V.V. Solving diffraction problems by parabolic equation method. Elektromagnitnye volny i elektronnye sistemy - Electromagnetic waves and electronic systems. 2012. Vol.17. No.11. P.24-30. (In Russian)

13. Permyakov V.A., Mikhailov M.S., Malevich E.S. Analysis of Propagation of Electromagnetic Waves in Difficult Conditions by the Parabolic Equation Method. IEEE Transactions on Antennas and Propagation. 2019. Vol.67, No.4, P.1-9.

14. Fen S., Chen J. Low-Angle Reflectivity Modeling of Land Clutter. IEEE Geoscience and Remote Sensing Letters. 2006. Vol. 3. No.2. P.254-258.

15. Billingsley J.B. Low-Angle radar land clutter: measurements and empirical models. William Andrew Publishing, Inc. 2002. 703 p.

16. Akhiyarov V.V. The results of radiation and scalar diffraction problems solution using parabolic equation technique. Elektromagnitnye volny i elektronnye sistemy - Electromagnetic waves and electronic systems. 2014. Vol. 19. No. 2. P.12-18. (In Russian)

17.  Ozgun O. Recursive Two-Way Parabolic Equation Approach for Modelling Terrain Effects in Tropospheric Propagation.  IEEE Transaction on Antennas and Propagation. 2009. Vol.57. No.9, P.2706-2714.

18.  Apaydin A., Ozgun O., Kuzuoglu M., Sevgi L. A Novel Two-Way Finite-Element Parabolic Equation Groundwave Propagation Tool: Test With Canonical Structures and Calibration. IEEE Transaction on Geoscience and Remote Sensing. 2011, Vol.49. No.8, P.2887-2899.

19. Ozgun O., Apaydin A., Kuzuoglu M., Sevgi L. PETOOL: MATLAB-based one-way and two-way split-step parabolic equation tool for radiowave propagation over variable terrain. Computer Physics Communications. 2011. Vol.182. P.2638-2654.

20.  Apaydin A., Sevgi L. Radio Wave Propagation and Parabolic Equation Modeling. IEEE Press. 2017. 136 p.

 

For citation:

Akhiyarov V.V. Attenuation factor calculation for backscattering from the terrain using the parabolic equation technique. Zhurnal Radioelektroniki - Journal of Radio Electronics. 2019. No. 11. Available at http://jre.cplire.ru/jre/nov19/1/text.pdf

DOI  10.30898/1684-1719.2019.11.1