An Accurate and Efficient 3-D Shooting-and- Bouncing-Polygon Ray Tracer for Radio Propagation Modeling

This paper describes two important improvements to a 3-D shooting-and-bouncing-polygon (SBP) ray tracer for radio propagation modeling. It introduces a way to trace diffracted-reflected (D-R) rays in the SBP framework and improves SBP accuracy when the D-R rays play an important role. It also introd...

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Bibliographic Details
Published in:IEEE transactions on antennas and propagation 2018-12, Vol.66 (12), p.7244-7254
Main Authors: Teh, Chin-Hui, Chung, Boon-Kuan, Lim, Eng-Hock
Format: Article
Language:English
Subjects:
Bouncing
Computational efficiency
Computational modeling
Computer simulation
Computing time
Diffraction
Electromagnetic edge diffraction
Indoor environments
Mathematical models
Propagation
radio propagation
Radio transmission
Ray tracing
Receivers
Reflection
space partitioning algorithm
Street canyons
Three-dimensional displays
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Summary:This paper describes two important improvements to a 3-D shooting-and-bouncing-polygon (SBP) ray tracer for radio propagation modeling. It introduces a way to trace diffracted-reflected (D-R) rays in the SBP framework and improves SBP accuracy when the D-R rays play an important role. It also introduces a better space partitioning scheme for the use with SBP and improves the SBP's computation efficiency by more than 10\times in some applications. The numerical results are compared against published measurements and 3-D full-wave solutions. They show that the improved SBP ray tracer is a good multipurpose 3-D ray tracer which can be used to simulate urban street canyon (without double over-rooftop diffraction), indoor, and tunnel propagation environments.
ISSN:0018-926X
1558-2221
DOI:10.1109/TAP.2018.2874519