Extraction of Electromagnetic Scattering from Random Rough Surfaces in Complex Environments using Numerical Methods
Publish place: Journal of Communication Engineering، Vol: 10، Issue: 1
Publish Year: 1402
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_JCESH-10-1_003
تاریخ نمایه سازی: 15 اسفند 1401
Abstract:
In this study, we present a comprehensive overview of the exact and approximate models and methods that are available to measure the dispersion of random rough surfaces. We investigated the structural implementation of such surfaces in the finite-difference time-domain (FDTD) simulation environment and introduced a method for error reduction in simulated environments with such surfaces to improve the accuracy of near-path scattering of random rough surfaces. For this aim, a new adsorbent consisting of two types of adsorbents with distinct properties is proposed. During different tests in environments with the random rough surfaces and more complex environments with abnormal dispersers, the superiority, and higher performance of the proposed adsorbents are verified and then, properties of the adsorbents are investigated. Next, two dimensional random rough surfaces are analyzed to investigate electromagnetic scattering. To determine the electromagnetic scattering field, surface height's and slope's joint probability density function is calculated and utilized after generating a two-dimensional rough surface. The ray-tracing base model is exploited, and then the Monte-Carlo technique is hired to convert an infinite integration form into the form of finite integration.
Keywords:
Absorbent layers , Random rough surface scattering , Finite-difference time-domain (FDTD) numerical method , Numerical methods in electromagnetism
Authors
Amir Hatamian
Department of Electrical Engineering, Urmia University, Urmia, Iran
Changiz Ghobadi
Department of Electrical and Computer Engineering Urmia University, Urmia, Iran
Javad Nourinia
Department of Electrical and Computer Engineering Urmia University, Urmia, Iran
Ehsan Mostafapour
Urmia University
Rahim Barzegari
Department of Electrical Engineering, Urmia University, Urmia, Iran