FDTD Modeling of Troposcatter
Abstract
For this project, we will generate Maxwell#s equations, moving-window finite-difference time-domain (FDTD) models of troposcatter.As a grid-based method that employs grid cell resolutions at least an order of magnitude higher than a wavelength, the FDTD method can include the complex composition and turbulence of the troposphere. Further, since the FDTD method directly solves Ampere#s and Faraday#s laws, it can solve for all of the important physics of the attenuation, reflection, scattering, and diffraction of signalsin the troposphere. We will perform a systematic study of troposcatter under various conditions of the troposphere. Our goal is to better isolate the exact causes and characteristics of troposcatter so that more robust troposcatter communications may be developed. We will begin with efficient, proof-of-concept two-dimensional (2-D) moving window FDTD models and then progress to three-dimensional (3-D) modeling. The FDTD results will be compared to available ray-tracing and parabolic equation results, ITU-R troposcatter model calculations, and measurement data. The supercomputing requirements for this work are on par with previous simulations run by Prof. Simpson#s group for other applications.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Nov 08, 2024
- Source ID
- N000142412562
Entities
People
- Jamesina Simpson
Organizations
- Office of Naval Research
- United States Navy
- University of Utah