Results 31 to 40 of about 2,386,661 (289)

A new hybrid geometrical optics and radiance based scattering model for ray tracing applications [PDF]

open access: yes, 2005
This paper presents a new hybrid geometrical optics (GO) and radiance based rough surface scattering model for use in ray tracing propagation models. The reflectance model includes the effects of both specular and diffuse reflection.
Nix, AR, Ng, KH, Tameh, EK
core   +1 more source

Deep Learning for Polarization Optical System Automated Design

open access: yesPhotonics
Aiming at the problem that traditional design methods make it difficult to control the polarization aberration distribution of optical systems quickly and accurately, this study proposes an automatic optimization design method for polarization optical ...
Haodong Shi   +8 more
doaj   +1 more source

Ray Tracing Simulation of X-ray Microdiffraction Beamline on the Inverse Compton Source

open access: yesSymmetry, 2023
This paper deals with the simulation of output beam parameters of the inverse Compton X-ray Source (ICS). The simulation takes into account the main parameters of the laser and electron beams, such as their pulse shapes, polarization properties as well ...
A. Vinogradov   +3 more
semanticscholar   +1 more source

Effectiveness Evaluation of Dual-Polarized OAM Multiplexing Employing SC-FDE in Urban Street Canyon Environments

open access: yesIEEE Access, 2022
This study investigates the system capacity of dual-polarized orbital angular momentum (OAM) multiplexing that employs single-carrier with frequency domain equalization (FDE) in urban street canyon environments.
Hirofumi Suganuma   +3 more
doaj   +1 more source

Ray-tracing and polarized radiative transfer in General Relativity [PDF]

open access: yesProceedings of the International Astronomical Union, 2016
AbstractWe discuss the problem of polarized radiative transfer in general relativity. We present a set of equations suitable for solving the problem numerically for the case of an arbitrary space-time metric, and show numerical solutions to example problems. The solutions are computed with a new ray-tracing code, Arcmancer, developed by the authors.
Pauli Pihajoki   +2 more
openaire   +2 more sources

The Impact of Multipath in Tunnels on Different Wireless Links Configurations—Model and Experimental Verification

open access: yesIEEE Access
This research investigates the challenges of wireless communication in tunnel environments, where signal reflections from walls cause multipath propagation, degrading signal power and phase, and thus transmission reliability.
Yehuda Taragin   +2 more
doaj   +1 more source

Effect of Quasi-Isotropic Antenna Orientation on Indoor Multipath Propagation Characteristics in RSN Applications

open access: yesInternational Journal of Antennas and Propagation, 2017
In the RFID sensor networks (RSN), the orientations of the antennas used in the network nodes have a significant influence on the propagation characteristics.
Abdelhamid Bou-El-Harmel   +3 more
doaj   +1 more source

A Novel Universal Applicability Design Method for Low Cross-Polarization Terahertz Tri-Reflector CATR

open access: yesInternational Journal of Antennas and Propagation, 2022
In this paper, a novel design approach with universal applicability is proposed for realizing a low cross-polarized terahertz tri-reflector compact antenna test range (CATR).
Zhi Li   +5 more
doaj   +1 more source

Ray Tracing Gems II [PDF]

open access: yes, 2021
"The digital version of this book is available now for free – with the print version following very soon! This Open Access book is a must-have for anyone interested in real-time rendering.

core   +2 more sources

Electrochemical Behavior of Flame‐Sprayed Sc‐Doped AlCoCrFeMo High‐Entropy Alloy Coatings in 3.5% Sodium Chloride Solution

open access: yesAdvanced Engineering Materials, EarlyView.
Scandium (Sc)‐doped AlCoCrFeMo HEA coatings are fabricated via flame spraying with 0.1, 0.3, and 0.5 wt% Sc additions. Among these, the HEA‐Sc0.3 coating exhibits the highest corrosion resistance, indicated by a more positive corrosion potential and lower current density.
Pankaj Kumar   +7 more
wiley   +1 more source

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