Results 141 to 150 of about 2,316,300 (349)

CNN-SENet: a GNSS-R ocean wind speed retrieval model integrating CNN and SENet attention mechanism

Satellite Navigation
The retrieval of sea surface wind speed is a key application of Global Navigation Satellite System-Reflectometry (GNSS-R). The continuous advancement of deep learning technologies has enabled the application of Convolutional Neural Network (CNN) models ...
Yimin Xia, Dongliang Guan, Zhiling Zhou
doaj   +1 more source

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

Copper Nanocrystallization in Anodic Oxide Films of Ti–Cu‐Based Bulk Metallic Glass and Its Effect on the Corrosion Resistance and Cytocompatibility

Advanced Engineering Materials, EarlyView.
Viktoriia Shtefan, Thorgund Nemec, Ute Hempel, Annett Gebert and coworkers demonstrate that anodic treatment of Ti–Cu‐based metallic glass in a nontoxic pyrophosphate electrolyte forms a protective bilayered Ti/Zr‐oxide film enriched with Cu nanocrystals.
Viktoriia Shtefan, Nora Fernández Navas, Thorgund Nemec, Ivan Kaban, Ute Hempel, Andrea Voss, Volker Hoffmann, Darius Pohl, Annett Gebert   +8 more
wiley   +1 more source

Tightly coupled VLP/INS integrated navigation by inclination estimation and blockage handling

Satellite Navigation
Visible Light Positioning (VLP) has emerged as a promising technology capable of delivering indoor localization with high accuracy. In VLP systems that use PhotoDiodes (PDs) as light receivers, the Received Signal Strength (RSS) is affected by the ...
Xiao Sun, Yuan Zhuang, Xiansheng Yang, Jianzhu Huai, Tianming Huang, Daquan Feng   +5 more
doaj   +1 more source

Specific construction tests [PDF]

, 1980
The technical feasibility of the Satellite Power System (SPS) is discussed. The development of feasible operational concepts and conceptualization of specific construction tasks are examined. The logic flow of functional analyses of both the rectenna and
Mcrae, W. V., Jr.
core   +1 more source

Direct Metal Deposition of Graphene–Ti28Nb35.4Zr Matrix Composites With Enhanced Mechanical, Corrosion, and Biocompatibility Properties for Bone Implants

Advanced Engineering Materials, EarlyView.
Graphene nanoplatelet (0.1 wt.%) reinforcement significantly enhances the performance of β Ti‐28Nb‐35.4Zr alloy. Grain refinement, reduced water contact angle, and improved surface characteristics promote osteoblast adhesion and complete surface coverage after 7 days.
Khurram Munir, Jixing Lin, Yuncang Li, Li Zhu, Paul F. A. Wright, Cuie Wen   +5 more
wiley   +1 more source

Electrochemical Behavior of Flame‐Sprayed Sc‐Doped AlCoCrFeMo High‐Entropy Alloy Coatings in 3.5% Sodium Chloride Solution

Advanced Engineering Materials, EarlyView.
Scandium (Sc)‐doped AlCoCrFeMo HEA coatings are fabricated via flame spraying with 0.1, 0.3, and 0.5 wt% Sc additions. Among these, the HEA‐Sc0.3 coating exhibits the highest corrosion resistance, indicated by a more positive corrosion potential and lower current density.
Pankaj Kumar, Akash Vyas, Mohammad Aatif Qazi, Nashit Jalal, Maria Ophelia Jarligo, Mostafa Yakout, Jing Liu, André McDonald   +7 more
wiley   +1 more source

An improved carrier-phase-based method for precise time synchronization using the observations from the China Space Station-ground synchronization system

Satellite Navigation
The development of precise time synchronization technology is key to the effective application of time–frequency standards. It will significantly promote the application of precise time–frequency standards in the areas such as Positioning, Navigation ...
Yanming Guo, Zhibing Pan, Xuewen Gong, Shuaihe Gao, Pei Wang, Yan Bai, Kun Song, Chen Zhou, Yuping Gao, Xiaochun Lu, Shougang Zhang   +10 more
doaj   +1 more source

Cathodic Cage Plasma Deposition of Nanostructured Cu–Fe–Se Coatings on Poly(methyl Methacrylate)

Advanced Engineering Materials, EarlyView.
Nanostructured Cu–Fe–Se coatings are deposited on PMMA by a modified cathodic cage plasma process, enabling low‐temperature deposition on polymer substrates. A transition from discontinuous to compact morphology is observed with temperature, with optimal properties at 200°C, where improved CuFeSe2‐type bonding, lowest sheet resistance, and favorable ...
V. S. S. Sobrinho, M. Naeem, T. H. C. Costa, M. S. Libório, J. C. A. Queiroz, C. B. B. Luna, R. R. M. Sousa, P. S. Vieira, E. M. Araújo   +8 more
wiley   +1 more source

MSWEP: 3-hourly 0.25° global gridded precipitation (1979–2015) by merging gauge, satellite, and reanalysis data

, 2016
. Current global precipitation (P) datasets do not take full advantage of the complementary nature of satellite and reanalysis data. Here, we present Multi-Source Weighted-Ensemble Precipitation (MSWEP) version 1.1, a global P dataset for the period 1979–
H. Beck, A. Dijk, V. Levizzani, J. Schellekens, D. Miralles, B. Martens, A. Roo   +6 more
semanticscholar   +1 more source