Results 71 to 80 of about 228,586 (380)

Enhancing public safety and security of critical national infrastructure utilizing the Nigerian Satellite Augmentation System (NSAS) [PDF]

, 2015
After the First World War, radio time signals offered alternative technology for determination of the Greenwich time and thus longitude at sea. The first manifestation of new technology capable of usurping the super accurate mechanical chronometers ...
Chatwin, Chris, Lawal, Lasisi S
core  

Polymorph‐Specific Electronic Transduction in WO3 during Molecular Sensing

Advanced Materials, EarlyView.
Metal‐oxide polymorphs with similar surface chemistry can nevertheless exhibit distinct sensing properties. In γ‐ and ε‐WO3, analyte adsorption appears comparable; yet, only ε‐WO3 induces a pronounced lattice electronic perturbation that accommodates charge in sub‐conduction band minimum states.
Matteo D'Andria, Meng Yin, Stefan Neuhauser, Vlasis G. Mavrantzas, Ying Chen, Ken Suzuki, Andreas T. Güntner   +6 more
wiley   +1 more source

Accuracy Analysis of GNSS (GPS, GLONASS and BEIDOU) Obsevation For Positioning [PDF]

E3S Web of Conferences, 2019
Global Navigation Satellite System called GNSS is a term used for the entire global navigation that already operate or are in the planning for the future. Some of the satellite that can be used are GPS (Global Positioning System) operated by USA, GLONASS
Khomsin, Mutiara Anjasmara Ira, Guruh Pratomo Danar, Ristanto Wahyu   +3 more
doaj   +1 more source

Arm‐Length‐Controlled CsPbBr3 Nanocrystals for Tunable Optical and Assembly Behavior

Advanced Materials, EarlyView.
In this work, the synthesis parameters that dictate the formation of armed CsPbBr3 nanocrystals are described, and routes enabling precise control over arm length are proposed. Direct links between morphology and optoelectronic behavior are established.
Irina Skvortsova, Sudipta Seth, Juliette Zito, Robin Girod, Bob Van Hout, Annick De Backer, Tom Stoops, Sergey Abakumov, Evgenii Vlasov, Tejmani Behera, Sandra Van Aert, Elke Debroye, Johan Hofkens, Sara Bals   +13 more
wiley   +1 more source

Multipath modeling and mitigation by using sparse estimation in global navigation satellite system-challenged urban vehicular environments

International Journal of Advanced Robotic Systems, 2020
Multipath interference has been one of the most difficult problems when using global navigation satellite system-based vehicular navigation in urban environments.
Yue Yuan, Feng Shen, Dingjie Xu
doaj   +1 more source

Multi-layered Multi-Constellation Global Navigation Satellite System Interference Mitigation

Navigation, 2023
Several layers of defense can be implemented in a global navigation satellite system (GNSS) receiver to improve its performance in the presence of interference.
Ciro Gioia, Daniele Borio
doaj   +1 more source

Authentication of Satellite Navigation Signals by Wiretap Coding and Artificial Noise

, 2018
In order to combat the spoofing of global navigation satellite system (GNSS) signals we propose a novel approach for satellite signal authentication based on information-theoretic security.
Formaggio, Francesco, Tomasin, Stefano
core   +1 more source

Recent Advancement on the Use of Global Navigation Satellite System-Based Positioning for Intelligent Transport Systems [Guest Editorial]

IEEE Intelligent Transportation Systems Magazine, 2020
The articles in this special section focus on recent advancements on the use of the global navigation satellite system (GNSS)-based positioning for intelligent transport systems.
F. Dovis, L. Ruotsalainen, R. Toledo-Moreo, Z. Kassas, V. Gikas   +4 more
semanticscholar   +1 more source

Self‐Assembled Monolayers in p–i–n Perovskite Solar Cells: Molecular Design, Interfacial Engineering, and Machine Learning–Accelerated Material Discovery

Advanced Materials, EarlyView.
This review highlights the role of self‐assembled monolayers (SAMs) in perovskite solar cells, covering molecular engineering, multifunctional interface regulation, machine learning (ML) accelerated discovery, advanced device architectures, and pathways toward scalable fabrication and commercialization for high‐efficiency and stable single‐junction and
Asmat Ullah, Ying Luo, Stefaan De Wolf
wiley   +1 more source

Retrieval of sea ice thickness using global navigation satellite system reflected signals

Measurement + Control, 2019
The aim of this paper is to develop a model which can be used to retrieve sea ice thickness based on global navigation satellite system reflected signals at a shore-based platform.
Hongxing Gao, Dongkai Yang, Qiang Wang
doaj   +1 more source