An Efficient 3-D FDTD-PE Hybrid Model for Radio Wave Propagation with Near-Source Obstacles

Zeina El Ahdab*, Funda Akleman

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)

Abstract

A novel 3-D hybrid model is presented for the prediction of propagation of radio waves in the presence of complex obstacles located on regular perfectly conducting terrain. The finite-difference time-domain (FDTD) method is implemented to model the source and obstacle regions, and the wave is then propagated by using the parabolic equation (PE) method-based algorithm. The source region contains all the complex obstacles and takes into consideration all the possible wave interactions in that region. The transition region between the FDTD domain and the PE domain is carefully treated in order to avoid numerical incompatibilities and to realize the time-/frequency-domain transition. The method is applied for different scenarios, starting with relatively simple obstacles like knife-edges for the verification and validation of the approach and then including more complex obstacles to the propagation medium. The results are compared to those obtained from full FDTD implementations of the same scenarios.

Original languageEnglish
Article number8496830
Pages (from-to)346-355
Number of pages10
JournalIEEE Transactions on Antennas and Propagation
Volume67
Issue number1
DOIs
Publication statusPublished - Jan 2019

Bibliographical note

Publisher Copyright:
© 1963-2012 IEEE.

Funding

Manuscript received January 18, 2018; revised September 4, 2018; accepted October 8, 2018. Date of publication October 18, 2018; date of current version January 16, 2019. This work was supported in part by the Scientific Research Projects Coordination Unit at Istanbul Technical University under Project 38038 and in part by the Turkey Scholarships Program. (Corresponding author: Zeina El Ahdab.) The authors are with the Department of Electrical and Electronics Engineering, Istanbul Technical University, Istanbul 34467, Turkey (e-mail: [email protected]; [email protected]).

FundersFunder number
Istanbul Teknik Üniversitesi38038

    Keywords

    • 3-D radio wave propagation
    • finite-difference time-domain (FDTD)
    • hybrid method
    • vector parabolic equation (PE)

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