Electromagnetic Propagation Modeling Over Irregular Terrain Using a New Hybrid Method

Altun G. Y., ÖZGÜN Ö.

18th Mediterranean Microwave Symposium (MMS), İstanbul, Türkiye, 31 Ekim - 02 Kasım 2018, ss.258-261 identifier

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Cilt numarası:
  • Basıldığı Şehir: İstanbul
  • Basıldığı Ülke: Türkiye
  • Sayfa Sayıları: ss.258-261
  • Anahtar Kelimeler: Split-step parabolic equation, method of moments, groundwave propagation, hybrid method, irregular terrain, TOOL
  • Hacettepe Üniversitesi Adresli: Evet

Özet

In this paper, a new hybrid method is presented to model electromagnetic wave propagation over an irregular terrain by using the Two-Way Split-Step Parabolic Equation (2W-SSPE), which is capable of handling both forward and backward scattered waves in long range electromagnetic problems, and the Method of Moments (MoM), which can model the back-scattering from an irregular terrain by using integral equations in the frequency domain. Since the 2W-SSPE method employs staircasing approach for modeling slanted/curved surfaces, a new hybrid SSPE+ MoM method is proposed to decrease the staircasing error and to improve the performance of the SSPE method. The results of the hybrid SSPE+ MoM method are compared with those of 2W-SSPE and those obtained with another hybrid method which is Geometric Optic (GO) + Uniform Theory of Diffraction (UTD).