Results 11 to 20 of about 41,840 (284)

Simulation of GPS localisation based on ray tracing [PDF]

Advances in Radio Science, 2021
In recent years, many simulation tools emerged to model the communication of connected vehicles. Thereby, the focus was put on channel modelling, applications or protocols while the localisation due to satellite navigation systems was treated as perfect.
B. Friebel, M. Schweins, N. Dreyer, T. Kürner   +3 more
doaj   +1 more source

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

IEEE 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, Yiming Huo, Zhonghua Liang, Xiaodai Dong, Tao Lu   +4 more
doaj   +1 more source

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

IEEE 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

Applied 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

RT Engine: An Efficient Hardware Architecture for Ray Tracing

Applied 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, Libo Huang, Hui Guo, Yashuai Lü, Ling Yang, Nong Xiao, Yongwen Wang, Li Shen, Mengqiao Lan   +8 more
doaj   +1 more source

iTrace – A Ray Tracing Aberrometer

Delhi 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, Siddhi Goel, Vinay Gupta, Devesh Kumawat, Pranita Sahay   +4 more
doaj   +1 more source

Photorealistic Rapid Computer-Generated Holography Employing an Enhanced Path Tracing Technique With Sequence Generated Trial

IEEE Photonics Journal, 2023
Fast holographic generation technology depends on the swift creation of computer-generated holograms (CGHs). Currently, the fast generation method of computer-generated holograms based on ray tracing is still based on non-physical ray tracing methods ...
Xindi Chen, Aiming Ge, Dongsheng Zhu, Qiuyang Wang, Jiangbo Wu, Shuo Liu   +5 more
doaj   +1 more source

Ray Tracing for Radio Propagation Modeling: Principles and Applications

IEEE 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]

Jisuanji 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

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

EPJ 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, Anthonissen Martijn, ten Thije Boonkkamp Jan, IJzerman Wilbert   +3 more
doaj   +1 more source