Results 1 to 10 of about 516,580 (306)

Impact of the terrestrial reference frame on the determination of the celestial reference frame [PDF]

open access: yesGeodesy and Geodynamics, 2019
Currently three up-to-date Terrestrial Reference Frames (TRF) are available, the ITRF2014 from IGN, the DTRF2014 from DGFI-TUM, and JTRF2014 from JPL. All use the identical input data of space-geodetic station positions and Earth orientation parameters ...
Maria Karbon   +2 more
doaj   +4 more sources

Object representation in a gravitational reference frame [PDF]

open access: yeseLife, 2023
When your head tilts laterally, as in sports, reaching, and resting, your eyes counterrotate less than 20%, and thus eye images rotate, over a total range of about 180°. Yet, the world appears stable and vision remains normal.
Alexandriya MX Emonds   +3 more
doaj   +2 more sources

Relative subsystems and quantum reference frame transformations [PDF]

open access: yesCommunications Physics
Recently there has been much effort in developing a quantum generalisation of reference frame transformations. Despite important progress, a complete understanding of their principles is still lacking.
Esteban Castro-Ruiz, Ognyan Oreshkov
doaj   +2 more sources

Operational Quantum Reference Frame Transformations [PDF]

open access: yesQuantum
Quantum reference frames are needed in quantum theory for much the same reasons that reference frames are in classical theories: to manifest invariance in line with fundamental relativity principles and to provide a basis for the definition of observable
Titouan Carette   +2 more
doaj   +4 more sources

Simple pendulum in a rotating reference frame [PDF]

open access: yesRevista Brasileira de Ensino de Física
Describing the harmonic motion of a simple pendulum observed from a rotating reference frame necessitates solving the differential equations governing three-dimensional motion in a non-inertial reference frame, which can be a challenging endeavor for ...
David Velasco Villamizar
doaj   +2 more sources

Historical development of SIRGAS

open access: yesJournal of Geodetic Science, 2022
The Geodetic Reference System for the Americas (Sistema de Referencia Geodésico para las Américas, SIRGAS) was initiated in 1993 for South America at an international conference organised by the International Association of Geodesy (IAG), the Pan ...
Drewes Hermann
doaj   +1 more source

Four-state reference-frame-independent quantum key distribution with non-qubit sources [PDF]

open access: yes, 2021
The discrepancy between theory and experiment severely limits the development of quantum key distribution (QKD). Reference-frame-independent (RFI) protocol has been proposed to avoid alignment of the reference frame.
Yuqing Huang (153028)   +8 more
core   +1 more source

The Celestial Reference Frame at K Band: Imaging. I. The First 28 Epochs [PDF]

open access: yes, 2023
We present K -band (24 GHz) images of 731 compact extragalactic radio sources with submilliarcsecond resolution, based on radio interferometric observations made with the Very Long Baseline Array of 10 telescopes during 29 day long sessions spanning from
K-band Celestial Reference Frame Collaboration   +6 more
core   +1 more source

IMPROVED REFERENCE KEY FRAME ALGORITHM [PDF]

open access: yesISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2019
The autonomous vehicles, such as wheeled robots and drones, efficiently contribute in the search and rescue operations. Specially for indoor environments, these autonomous vehicles rely on simultaneous localization and mapping approach (SLAM) to ...
H. A. Mohamed   +4 more
doaj   +1 more source

The Impact of Vision Loss on Allocentric Spatial Coding

open access: yesFrontiers in Neuroscience, 2020
Several works have demonstrated that visual experience plays a critical role in the development of allocentric spatial coding. Indeed, while children with a typical development start to code space by relying on allocentric landmarks from the first year ...
Chiara Martolini   +5 more
doaj   +1 more source

Home - About - Disclaimer - Privacy