Results 11 to 20 of about 117,276 (312)
Monte Carlo Simulation with Experimental Research about Underwater Transmission and Imaging of Laser
Applied Sciences, 2022 Attenuation of the laser beam in underwater transmission and detection due to absorption and scattering results in a rapid reduction in energy and blurring of the image.
Shouchuan Guo +5 more
doaj +1 more source
Theory of AdaDelSPGD Algorithm in Fiber Laser-Phased Array Multiplex Communication Systems
Applied Sciences, 2022 Stochastic parallel gradient descent (SPGD) algorithm is one of the most promising methods for effective coherent beam combination. However, the algorithm also has some disadvantages, such as slow convergence speed and local extremum. This paper proposes
Jiayu Chen +6 more
doaj +1 more source
Inverse Solution Error Analysis and Correction of Beam Steering System Based on Risley Prisms
Applied Sciences, 2022 The pointing accuracy of the Risley prisms beam-steering system mainly depends on the accuracy of the solution method and the impact of the error on the solution.
Yinuo Song +4 more
doaj +1 more source
A demonstration of LISA laser communication [PDF]
Classical and Quantum Gravity, 2006 minor corrections found in the CQG ...
Pollack, Scott E, Stebbins, Robin Tuck
openaire +2 more sources
Laser adhesion test for thermal sprayed coatings on textured surface by laser [PDF]
, 2016 The laser shock adhesion test (LASAT) is a technique allowing the generation of high tensile stresses in materials. The LASAT consists in focusing a pulsed laser beam on a water-confined target.
BOUSTIE, Michel +15 more
core +1 more source
Low-altitude laser propagation link over a marine surface
, 2022 A 1.55µm Laser Propagation Testbed (LPT) has been deployed over a 3.5 km stretch of open water between the port of Den Helder and the island of Texel in The Netherlands.
Scheers, Loes +5 more
core +1 more source
Machines, 2023 The success of laser communications heavily relies on the stiffness, dynamic properties, static performance, and manufacturability of the U-frame. The U-frame is a fundamental element in satellite-to-ground laser communication telescopes.
Guangzhen Li +5 more
doaj +1 more source
Photonics, 2023 The signal-receiving end of acquisition, pointing, and tracking (APT) systems applied to intersatellite laser communication terminals usually uses a fast-steering mirror (FSM) to control the fiber-coupling process, has a complex structural design, and ...
Bo Peng +6 more
doaj +1 more source
Laser microsampling of soil microbial community [PDF]
Journal of Biological Engineering, 2018 Standard microorganism isolating technology applied for complex multiphase environmental samples such as soil or sediment needs pre-treatment steps to remove living cells from their mixed-phase microniche, by creating a liquid-phase sample. This process removes synergetic relationships, which help to maintain viability of yet-to-be-cultured and hard-to-
M. V. Gorlenko +13 more
openaire +3 more sources
Laser based underwater communication systems [PDF]
2016 18th International Conference on Transparent Optical Networks (ICTON), 2016 We report on recent progress in the field of visible light communications including direct modulation of blue laser devices at data rates beyond 10 Gbit/s, and the transmission of 2.5 Gbit/s OOK data through water. We also discuss the advantages of operating with single mode laser devices and matched filtering at the receiver in the context of ...
Giuliano, Giovanni +5 more
openaire +1 more source