Results 11 to 20 of about 246,167 (257)

Air-to-Ground Large-Scale Channel Characterization by Ray Tracing

open access: yesIEEE Access, 2022
Through ray tracing simulation on three-dimensional (3D) urban environments, we characterize air-to-ground (A2G) channels for 5G and beyond wireless communications.
Mengan Song   +4 more
doaj   +1 more source

LLVM RISC-V RV32X Graphics Extension Support and Characteristics Analysis of Graphics Programs

open access: yesIEEE Access, 2023
In recent years, virtual reality technology has become the dominant means of human-computer interaction, with computer graphics rendering technology being a crucial component in realizing virtual reality experiences.
Peng Wang, Zhi-Bin Yu
doaj   +1 more source

Ray Tracing Method of Gradient Refractive Index Medium Based on Refractive Index Step

open access: yesApplied Sciences, 2021
For gradient refractive index media with large refractive index gradients, traditional ray tracing methods based on refined elements or spatial geometric steps have problems such as low tracing accuracy and efficiency.
Qingpeng Zhang, Yi Tan, Ge Ren, Tao Tang
doaj   +1 more source

iTrace – A Ray Tracing Aberrometer

open access: yesDelhi Journal of Ophthalmology, 2019
Modern ophthalmology focusses on visual quality and not just visual acuity. The quality of vision is affected by both lower and higher order aberrations.
Ayushi Sinha   +4 more
doaj   +1 more source

RT Engine: An Efficient Hardware Architecture for Ray Tracing

open access: yesApplied Sciences, 2022
The reality of the ray tracing technology that leads to its rendering effect is becoming increasingly apparent in computer vision and industrial applications.
Run Yan   +8 more
doaj   +1 more source

Hamiltonian and Phase-Space Representation of Spatial Solitons [PDF]

open access: yes, 2013
We use Hamiltonian ray tracing and phase-space representation to describe the propagation of a single spatial soliton and soliton collisions in a Kerr nonlinear medium.
Barbastathis, George   +2 more
core   +1 more source

Ray Tracing for Radio Propagation Modeling: Principles and Applications

open access: yesIEEE Access, 2015
This paper reviews the basic concepts of rays, ray tracing algorithms, and radio propagation modeling using ray tracing methods. We focus on the fundamental concepts and the development of practical ray tracing algorithms.
Zhengqing Yun, Magdy F. Iskander
doaj   +1 more source

Dynamic Low-sampling Ambient Occlusion Real-time Ray Tracing for Molecular Rendering [PDF]

open access: yesJisuanji kexue, 2022
High-quality rendering in molecular visualization are particularly important for researchers to observe the structure of biomolecules.The rasterization rendering effect commonly used by mainstream molecular visualization tools is not good.Advanced ray ...
LI Jia-zhen, JI Qing-ge
doaj   +1 more source

A new heuristic geometrical approach for finding non-coplanar multiple edge diffraction ray paths [PDF]

open access: yes, 2006
Rooftop diffraction can contribute significantly to the propagation path loss in outdoor microcellular environments. For non-coplanar multiple edges, the finding of exact ray paths requires a complex algebraic analysis that is infeasible for rapid ...
Ng, KH, Nix, AR, Tameh, EK
core   +3 more sources

Comparison of Phase Space and Quasi-Monte Carlo Ray Tracing for the 3D Compound Parabolic Concentrator [PDF]

open access: yesEPJ Web of Conferences
Phase space ray tracing is an alternative to (Quasi-)Monte Carlo ray tracing in 2D. We introduce a 3D phase space algorithm and apply it to the compound parabolic concentrator.
Jansen Willem   +3 more
doaj   +1 more source

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