Results 31 to 40 of about 175,637 (301)
Chaotic transport of navigation satellites [PDF]
Chaos: An Interdisciplinary Journal of Nonlinear Science, 2019 Navigation satellites are known from numerical studies to reside in a dynamically sensitive environment, which may be of profound importance for their long-term sustainability. We derive the fundamental Hamiltonian of Global Navigation Satellite System dynamics and show analytically that near-circular trajectories lie in the neighborhood of a Normally ...
Ioannis Gkolias +4 more
openaire +3 more sources
TEMPUS: A proposal for international time transfer and precision tracking satellite [PDF]
, 1979 Very Long Baseline Interferometry (pulsars), Television relay via satellite, portable clocks, Navigation Technology Satellite, and Loran C are described and ...
Holmes, D. C.
core +1 more source
Advanced Engineering Materials, EarlyView.Additive manufacturing provides precise control over the placement of continuous fibres within polymer matrices, enabling customised mechanical performance in composite components. This article explores processing strategies, mechanical testing, and modelling approaches for additive manufactured continuous fibre‐reinforced composites.
Cherian Thomas, Amir Hosein Sakhaei
wiley +1 more source
Applied SciencesThe Arctic region holds immense strategic value in terms of scientific expedition, maritime transportation, and resource development, which makes reliable and secure satellite navigation services in this area crucial.
Tianqiao Zhang +3 more
doaj +1 more source
Precise Orbit Determination of LEO Satellite Using Dual-Frequency GPS Data [PDF]
Journal of Astronomy and Space Sciences, 2009 KOrea Multi-purpose SATellite (KOMPSAT)-5 will be launched at 550km altitude in 2010. Accurate satellite position (20 cm) and velocity (0.03 cm/s) are required to treat highly precise Synthetic Aperture Radar (SAR) image processing.
Yoola Hwang +3 more
doaj +1 more source
Electro‐Chemo‐Mechanical Coupling in Hf0.5Zr0.5O2 Ferroionic Heterostructures
Advanced Functional Materials, EarlyView.Schematic of a ferroionic HZO heterostructure where epitaxial interfaces enable dynamic oxygen‐vacancy exchange, coupling ionic and ferroelectric degrees of freedom. Vacancy‐mediated polarization modulation biases HZO polymorphism, suppresses leakage, and enhances piezoelectric response, yielding distinct butterfly‐loop evolution and diode‐like ...
Achilles Bergne +17 more
wiley +1 more source
Retrieving Precipitable Water Vapor From Shipborne Multi‐GNSS Observations [PDF]
, 2019 ©2019. American Geophysical UnionPrecipitable water vapor (PWV) is an important parameter for climate research and a crucial factor to achieve high accuracy in satellite geodesy and satellite altimetry. Currently Global Navigation Satellite System (GNSS)
Ge, Maorong +8 more
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Advanced Functional Materials, EarlyView.A Complexation‐Mediated Diffusion‐Limited Growth (CMDLG) framework is established to rationalize the anisotropic growth of lead‐free perovskites. Integrating coordination chemistry with mass transport kinetics, this study theoretically derives and experimentally validates that stable iodocuprate complexes induce a diffusion‐limited regime.
Hyunmin Lee +5 more
wiley +1 more source
International Application of BeiDou Navigation Satellite System
中国工程科学, 2023 The international application of the BeiDou navigation satellite system (BDS) is a new requirement for BDS development in the new development stage; it is also significant for promoting the high-quality development of the Belt and Road, establishing a ...
Yang Changfeng +4 more
doaj +1 more source