Results 41 to 50 of about 2,420,038 (307)
International Journal of Antennas and Propagation, 2013 Free Space Optics (FSO) links are affected by several impairments: optical turbulence, scattering, absorption, and pointing. In particular, atmospheric optical turbulence generates optical power fluctuations at the receiver that can degrade ...
A. Andò +6 more
doaj +1 more source
IEEE Photonics Journal, 2019 Optical communication is a promising strategy for deep space exploration but it is susceptible to coronal solar wind turbulence impairments during superior solar conjunction.
Guanjun Xu, Min Zeng
doaj +1 more source
Photonics, 2021 Partially coherent optical vortices have been applicated widely to reduce the influence of atmospheric turbulence, especially for free-space optical (FSO) communication.
Jiao Wang +5 more
doaj +1 more source
IEEE Photonics Journal, 2018 We model the effect of the off-axis distance of edge dislocation on the transmission of mixed higher order optical vortex–edge dislocations in atmospheric turbulence.
Penghui Gao +4 more
doaj +1 more source
Optical wave turbulence and the condensation of light [PDF]
Journal of the Optical Society of America B, 2009 6 pages, 7 figures, Changes made due to reviewers comments before ...
Bortolozzo, Umberto +3 more
openaire +2 more sources
Measurements of the Beam-Wave Fluctuations over a 142-km Atmospheric Path [PDF]
, 2006 An optical link has been established between the Canary Islands La Palma and Tenerife. A 1064-nm transmitting laser was located on La Palma whereas a BPSK communication receiver and measurement instruments were installed in ESA's OGS on Tenerife.
Perlot, Nicolas +11 more
core +1 more source
Design Analysis of A Compensation Technique In FSO Communication System to Mitigate Atmospheric Turbulence Effect [PDF]
Engineering and Technology Journal, 2019 Free-space laser communication systems usually experience strong channel fading caused by atmospheric turbulence. To mitigate the impact of atmospheric turbulence on free-space optical links using compensation techniques including adaptive optical (AO ...
Jenan Kalati, Shehab Kadhim
doaj +1 more source
Numerical simulations of beam propagation through optical turbulence for high-altitude platform crosslinks [PDF]
, 2004 In this paper we introduce a simulation method for modelling clear-air atmospheric turbulence effects for long horizontal stratospheric paths. Divergence angles of several hundred microradians in combination with link distances up to 800 km require to ...
Perlot, Nicolas +3 more
core
High Health Care Utilization Preceding Diagnosis With Juvenile Idiopathic Arthritis
Arthritis Care &Research, EarlyView.Objective Although early diagnosis improves long‐term outcomes, patients with juvenile idiopathic arthritis (JIA) often experience prolonged, circuitous paths to diagnosis. To inform diagnostic improvement, we sought to characterize health care utilization in the year preceding diagnosis. Methods We identified 10,021 patients with an incident diagnosis
Anna Costello +5 more
wiley +1 more source
Advanced Engineering Materials, EarlyView.Geometry‐driven thermal behavior in wire‐arc additive manufacturing (WAAM) influences microstructural evolution during nonequilibrium solidification of a chemically complex Fe–Cr–Nb–W–Mo–C nanocomposite system. By comparing different deposits configurations, distinct entropy–cooling rate correlations, segregation, and carbide evolution are revealed ...
Blanca Palacios +5 more
wiley +1 more source