Investigation into an efficient numerical modelling approach for estimating path-loss over variable terrain

 
 
 
  • Abstract
  • Keywords
  • References
  • PDF
  • Abstract


    Different studies have been conducted for radio wave propagation in troposphere using different numerical modelling approaches. The most reliable approach is based on parabolic wave equation (PWE). The modelling of PWE is approached using different numerical schemes that include Split-step Fourier Transform Method (SSFM), Finite Element/Difference method and Wavelet based numerical method. The conventional Finite Element/Difference method are less accurate and/or computationally more expensive. While in comparison, split-step wavelet method (SSWM) is highly accurate and computationally very efficient. The SSWM has been previously used for modelling of PWE with smooth terrain. However, the real conditions are completely different as they contain variable terrain. The irregularities in surface of terrain have considerable influence because of reflection and diffraction on radio-wave propagation. In order to develop an effective communication system, a model that properly incorporates the reflection parameters from the variable terrain. In this research work, the SSWM is proposed for modelling of PWE for radio wave propagation over variable terrain. In SSWM, compactly supported wavelet of Daubechies 6 are used as bases. Obtained results accurately accounts the reflection from rough terrain surface and shows good agreement with SSFM.


  • Keywords


    Communication, Split-step wavelets, numerical, wireless, evaporation duct

  • References


      [1] Iqbal, and V. Jeoti. "An Improved Split-Step Wavelet Transform Method for Anomalous Radio Wave Propagation Modelling." Radio Engineering 23(4): 987, 2014

      https://www.radioeng.cz/fulltexts/2014/14_04_0987_0996.pdf

      [2] Clemmow, P. C. The Plane Wave Spectrum Representation of Electromagnetic Fields: International Series of Monographs in Electromagnetic Waves, Elsevier. 2013, vol. 12

      https://courses.engr.illinois.edu/ece458/CPClemmow.pdf

      [3] S. Guru, and H. R. Hiziroglu., Electromagnetic field theory fundamentals, Cambridge University Press. 2004, vol. 1

      [4] A. Balanis., Antenna theory: analysis and design, John Wiley and Sons. 2015. 4th Edition.

      [5] Ghasemi, et al. Propagation Engineering in Wireless Communictions. New York, Springer New York. 2016.

      [6] M. Gough., "UHF signal strength measurements as a guide to atmospheric structures." Marconi Review 42: 135-152. 1979

      https://www.researchgate.net/publication/238035913_UHF_signal_strength_measurements_as_a_guide_to_atmospheric_structures

      [7] Lavergnat, and M. Sylvain., Radio wave propagation: principles and techniques, Wiley. 2000

      [8] W. Barclay., Propagation of radio waves, Inst of Engineering and Technology. 2012

      [9] H. Sizun., Radio wave propagation for telecommunication applications, Springer Verlag.2005

      [10] H. R. Reed and C. M. Russell., Ultra high frequency propagation. Quarterly Journal of the Royal Meteorological Society. London,92: 588. 1966

      http://onlinelibrary.wiley.com/doi/10.1002/qj.49709239425/abstract

      [11] S. Gunashekar., "Transhorizonradio wave propagation due to evaporation ducting." Resonance 11(1): 51-62. 2006

      http://www.ias.ac.in/article/fulltext/reso/011/01/0051-0062

      [12] T. Manning., Microwave radio transmission design guide, Artech House. 2009

      [13] G. Akbarpour., Tropospheric microwave propagation modeling. Department of Electrical and Computer Engineering, The University of Western Ontario (Canada). Ph.D. 2006

      [14] O. Ozgun., "PETOOL: MATLAB-based one-way and two-way split-step parabolic equation tool for radio wave propagation over variable terrain." Computer Physics Communications 182(12): 2638-2654. 2011

      [15] Mireille. Parabolic equation methods for electromagnetic wave propagation. No. 45. IET, 2000.

      [16] B. Hassan, S. Mohammad, and S. Amanallah "A Numerical Study on Optimizing the Geometry and Location of the Openings in MasonryWalls Using Finite Element Method" Journal of Engineering and Applied Sciences 12(9): 2402-2414, 2017

      [17] H. Nazabat, et al., "Use of wavelets in marine controlled source electromagnetic method for geophysical modeling." International Journal of Applied Electromagnetics and Mechanics 51.4 : 431-443. 2016

      https://content.iospress.com/articles/international-journal-of-applied-electromagnetics-and-mechanics/jae160002

      [18] Ole Møller. Wavelets in scientific computing. Diss. Technical University of Denmark, 1998.

      [19] Sirkova and M. Mikhalev., "Parabolic wave equation method applied to the tropospheric ducting propagation problem: a survey." Electromagnetics 26(2): 155-173. 2006

      [20] T. Kremp., Split-step wavelet collocation methods for linear and nonlinear optical wave propagation, University of Karlsruhe (Cuvillier Verlag Göttingen, ISBN 3-89873-605-9). Ph.D. 2002


 

View

Download

Article ID: 9961
 
DOI: 10.14419/ijet.v7i2.3.9961




Copyright © 2012-2015 Science Publishing Corporation Inc. All rights reserved.