Results 11 to 20 of about 55,690 (303)

Characterization of specular freeform surfaces from reflected ray directions using experimental ray tracing [PDF]

open access: yesJournal of Sensors and Sensor Systems, 2021
The applications of freeform surfaces in optical components and systems are increasing more and more. Therefore, appropriate measurement techniques are needed to measure these freeform surfaces for verification.
T. Binkele   +7 more
doaj   +1 more source

Simulation of GPS localisation based on ray tracing [PDF]

open access: yesAdvances 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   +3 more
doaj   +1 more source

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

Comparison of predictions from a ray tracing microcellular model with narrowband measurements [PDF]

open access: yes, 1997
In this paper predictions from a 3-D 'image-based' ray tracing model for microcellular environments are compared with three sets of narrowband measurements performed in a typical urban area. The comparisons illustrate that good agreement can be obtained,
Nix, AR, Athanasiadou, G, McGeehan, JP
core   +1 more source

An advanced multi-element microcellular ray tracing model [PDF]

open access: yes, 2004
In this paper an advanced site specific image-based ray-tracing model is developed that enables multi-element outdoor propagation analysis to be performed in a microcellular environment.
Nix, AR, Ng, KH, Tameh, EK
core   +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

Ray tracing study of ITER in-vessel lighting system [PDF]

open access: yes, 2020
In-vessel lighting system is being developed for ITER. The diagnostic system is for inspecting and detecting eventual damages and defects of in-vessel components between discharges by illuminating the vacuum vessel with light sources.
Kajita, Shin   +2 more
core   +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

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