Results 231 to 240 of about 6,501 (284)

Machine learning assisted wavefront sensor. [PDF]

Proc SPIE Int Soc Opt Eng
McFadden C, Chen B, Fiolka R.
europepmc   +1 more source

Unsupervised Deep Representation Learning for Infrasound Phase Identification

Earth and Space Science, Volume 13, Issue 6, June 2026.
Abstract Infrasound phase identification is challenging because atmospheric variability strongly influences signal propagation on short timescales that are not resolved by standard atmospheric models. While traditional approaches rely on propagation modeling and array‐derived parameters, recent work suggests that waveform structure itself encodes ...
Miro Ronac Giannone, Stephen Arrowsmith, Gil Averbuch   +2 more
wiley   +1 more source

Space Weather Disrupts Low‐Latitude Network RTK: Evidence From LSTIDs During June 2025 Geomagnetic Storm

Space Weather, Volume 24, Issue 6, June 2026.
Abstract The geomagnetic storm on 1 June 2025 generated pronounced large‐scale traveling ionospheric disturbances (LSTIDs) over China, captured by dense GNSS networks. It has been unclear whether network real‐time kinematic (NRTK) positioning, which relies on spatial interpolation from multiple reference stations, remains effective under such extreme ...
Tong Liu, Jianghe Chen, Wenfeng Nie, Zhibin Yu, Rui Song, Wu Chen, Pan Xiong, Tianhe Xu, Bo Chen   +8 more
wiley   +1 more source

Dynamic Wavefront Manipulation Enabled with VO₂-Based Reflective Terahertz Metasurfaces. [PDF]

Nanomaterials (Basel)
Huang R, Shi S, Sun M, Yang R, Lin Y, Wu M, Zhang M, Maksimenko S, He X.   +8 more
europepmc   +1 more source

Influence of Mold Design and Molding Conditions on the Optical Properties of Contact Lenses. [PDF]

Sensors (Basel)
Tatsumi K, Saeki K, Kubota S, Kaneda Y, Uno K, Ohnuma K, Shiina T.   +6 more
europepmc   +1 more source

Physics-consistent denoising of full-field photoacoustic displacement maps using an adaptive residual attention network. [PDF]

Photoacoustics
Awais M, Yoon T, Choi W, Lee BH.
europepmc   +1 more source

A Compact Dual-Oblique-Fiber Heterodyne Phase-Shifting Point Diffraction Interferometer. [PDF]

Sensors (Basel)
Wang Y, Zhu C, Zhang W.
europepmc   +1 more source

Properties of coherence-gated wavefront sensing

Journal of the Optical Society of America A, 2007
Coherence-gated wavefront sensing (CGWS) allows the determination of wavefront aberrations in strongly scattering tissue and their correction by adaptive optics. This allows, e.g., the restoration of the diffraction limit in light microscopy. Here, we develop a model, based on ray tracing of ballistic light scattered from a set of discrete scatterers ...
Markus, Rueckel, Winfried, Denk
openaire   +3 more sources

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Wavefront sensing with an axicon

Optics Letters, 2011
The use of a large apex-angle axicon for common-path interferometric wavefront sensing is proposed. The approach is a variant of point-diffraction interferometry bearing similarities to pyramidal wavefront sensing. A theoretical basis for wavefront sensing with an axicon is developed, and the outcomes of numerical simulations are compared to ...
Brian, Vohnsen, Sara, Castillo, Diego, Rativa   +2 more
openaire   +2 more sources