Results 191 to 200 of about 14,940 (225)

Commercial aviation VDL choices

IEEE Aerospace and Electronic Systems Magazine, 2003
The purpose of this study was to analyze digital data link communications technologies in a line-of-sight environment. Because there is a global debate over selecting the next generation VHF data link (VDL) technology, this paper evaluates each of them for the terminal and enroute airspace only.
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VDL mode E receiver performance measurments

IEEE Aerospace and Electronic Systems Magazine, 2006
VDL Mode E is a digital communications system proposed as a worldwide standard for replacement of the existing analog AM voice system used for VHF aeronautical communications. It provides a needed increase in voice channel capacity as well as offering a digital data link for CPDLC with the high integrity and low latency needed for time-critical ATC ...
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Formal Semantics of Programming Languages: VDL

IBM Journal of Research and Development, 1981
The history of ideas that led to the first formalization of the syntax and semantics of PL/I is sketched. The definition method and notation are known as the Vienna Definition Language (VDL). The paper examines the relationship between VDL and both denotational semantics and the axiomatic approach to programming language definition.
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VDL mode 3 digital voice operation

IEEE Aerospace and Electronic Systems Magazine, 2006
VHF data link (VDL) mode 3 is a digital TDMA communications system developed by the FAA and industry partners as a replacement for the existing 25 kHz analog AM systems currently used for VHF aeronautical communications. VDL mode 3 provides increased channel capacity and security for both voice and data link communications. This paper provides a report
J. Cyr, F. Studenberg
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Why Advanced VDL Provides Viable Way Forward

2019 Integrated Communications, Navigation and Surveillance Conference (ICNS), 2019
Improved communications performance and higher data rates are necessary to support future airspace operations. Application of new technologies to update the existing aeronautical Very High Frequency (VHF) communications can provide a viable solution with higher data rates that satisfy future airspace requirements while addressing areas of concern with ...
William Greenleaf, Joel Wichgers
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Plastic Omnium wins VDL storage tank deal

Fuel Cells Bulletin, 2020
French automotive components supplier Plastic Omnium has won a contract to develop and manufacture hydrogen storage systems for Dutch commercial vehicle manufacturer VDL, as part of the European H2Haul project to deploy hydrogen-based road transportation solutions.
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ElringKlinger, VDL in fuel cell partnership

Fuel Cells Bulletin, 2020
German automotive components supplier ElringKlinger and VDL Bus & Coach in the Netherlands have agreed on a strategic fuel cell technology partnership, to develop and industrialise fuel cell stacks and systems for mobile and stationary applications.
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VDL-2 for the ATN/IPS

2015 IEEE/AIAA 34th Digital Avionics Systems Conference (DASC), 2015
Activities have been initiated in ICAO and AEEC to further develop the Aeronautical Telecommunications Network/Internet Protocol Suite (ATN/IPS) rather than the ATN/Open System Interconnection (ATN/OSI) protocols for use by safety and regularity of flight applications.
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