Results 141 to 150 of about 220,608 (333)

About Security Global Navigation Satellite System GLONASS

open access: yesБезопасность информационных технологий, 2011
Threats of a security of global navigating satellite system GLONASS are considered, as well as the key threats influencing reliability of navigating definitions are allocated. The method of orbital monitoring of threats of a security of system GLONASS is
M. Y. Senatorov, R. B. Syatkovskiy
doaj  

Correlation-sum-deviation ranging method for vehicular node based on IEEE 802.11p short preamble

open access: yesInternational Journal of Distributed Sensor Networks, 2016
Growth of the traffic flow and traffic accident has raised more and more demands on wireless communication and positioning technologies that can provide new services such as vehicle collision warning and traffic management.
Xuerong Cui   +4 more
doaj   +1 more source

Distributed Timing and Localization (DiGiTaL) [PDF]

open access: yes
The Distributed Timing and Localization (DiGiTaL) system provides nano satellite formations with unprecedented,centimeter-level navigation accuracy in real time and nanosecond-level time synchronization.
Baker, Christopher   +2 more
core   +1 more source

The Future of Hydrogen‐Powered Aviation: Technologies, Challenges, and a Strategic Roadmap for Sustainable Decarbonization

open access: yesAdvanced Energy and Sustainability Research, EarlyView.
Hydrogen‐powered aviation offers a transformative pathway to zero‐emission flight by eliminating in‐flight CO2 emissions. Key considerations include propulsion systems (fuel cells and hydrogen combustion), cryogenic storage and insulation challenges, infrastructure and cost barriers, and supply‐chain constraints.
Mubasshira   +4 more
wiley   +1 more source

Copper Contact for Perovskite Solar Cells: Properties, Interfaces, and Scalable Integration

open access: yesAdvanced Energy and Sustainability Research, EarlyView.
Copper electrodes, as low‐cost, scalable contacts for perovskite solar cells, offer several advantages over precious metals such as Au and Ag, including performance, cost, deposition methods, and interfacial engineering. Copper (Cu) electrodes are increasingly considered practical, sustainable alternatives to noble‐metal contacts in perovskite solar ...
Shuwei Cao   +4 more
wiley   +1 more source

The Relationship between Accelerometry, Global Navigation Satellite System, and Known Distance: A Correlational Design Study. [PDF]

open access: yesSensors (Basel), 2022
Bursais AK   +9 more
europepmc   +1 more source

TDRSS Augmentation System for Satellites [PDF]

open access: yes
In 2015, NASA Goddard Space Flight Center (GSFC) reinvigorated the development of the TDRSS Augmentation Service for Satellites (TASS). TASS is a global, space-based, communications and navigation service for users of Global Navigation Satellite Systems ...
Baldwin, Philip   +3 more
core   +1 more source

Communication with GALILEO Navigation System [PDF]

open access: yes, 2009
Tato práce pojednává o komunikaci s evropským navigačním systémem GALILEO. V úvodu rozebírá princip globálních navigačních satelitních systémů, včetně přehledu nejdůležitějších vlastností těch současných (GPS, GLONASS, GALILEO, COMPASS).
Horák, Miroslav
core  

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