Results 21 to 30 of about 2,411,897 (179)
Ray-tracing analysis for cross-polarization scattering diagnostic on MAST-upgrade spherical tokamak [PDF]
Review of Scientific Instruments, 2021 A combined Doppler backscattering/cross-polarization scattering (DBS/CPS) system is being deployed on MAST-U for simultaneous measurements of local density turbulence, turbulence flows, and magnetic turbulence. In this design, CPS shares the probing beam with the DBS and uses a separate parallel-viewing receiver system.
R. Hong +3 more
openaire +5 more sources
Comparison of predictions from a ray tracing microcellular model with narrowband measurements [PDF]
, 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 +5 more
core +1 more source
The Astrophysical Journal Supplement Series, 2023 The Event Horizon Telescope (EHT) has recently released high-resolution images of accretion flows onto two supermassive black holes. Our physical understanding of these images depends on the accuracy and precision of numerical models of plasma and ...
Monika A. Moscibrodzka +1 more
doaj +1 more source
Numerical Tool for Calculating Birefringence in Mirror-Substrates for Gravitational-Wave Detectors
Frontiers in Astronomy and Space Sciences, 2022 The influence of birefringence on rays entering and exiting a non-isotropic medium is a complex process that depends on its dielectric tensor, the orientation and geometry of the medium, the surrounding material, and the inclination of the incident ray ...
Simon Zeidler
doaj +1 more source
, 2011 A three-by-three polarization ray tracing matrix method is developed to calculate the polarization transformations associated with ray paths through optical systems. The relationship between the three-by-three polarization ray tracing matrix P method and
Yun, Garam
core +4 more sources
, 2007 Tracing secondary rays, such as reflection, refraction and shadow rays, can often be the most costly step in a modern real-time ray tracer. In this paper, we examine this problem by using suitable ray coherence measures and present a thorough evaluation ...
Munkberg, Jacob +8 more
core +2 more sources
Deep Learning for Polarization Optical System Automated Design
PhotonicsAiming 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
IEEE Access, 2019 In this paper, the radiation features of indoor WiFi energy-harvesting antennas are analyzed, and the design guidelines that enhance receiving power are proposed.
Yen-Sheng Chen +2 more
doaj +1 more source
Matter and Radiation at Extremes, 2023 We propose a semi-analytical modeling of smoothed laser beam deviation induced by plasma flows. Based on a Gaussian description of speckles, the model includes spatial, temporal, and polarization smoothing techniques, through fits coming from ...
C. Ruyer +6 more
doaj +1 more source
Ray-tracing and polarized radiative transfer in General Relativity [PDF]
Proceedings 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