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Maritim Datakommunikasjon VDES - Forside...ITU Specification (ITU-R M.2092) Page 6 01.09.2016 WORLD...
Transcript of Maritim Datakommunikasjon VDES - Forside...ITU Specification (ITU-R M.2092) Page 6 01.09.2016 WORLD...
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Maritim Datakommunikasjon
VDESInnovasjonskonferansen e-nav.no 2016
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The three sided coin……A generic visualization of the e-nav architecture
01.09.2016Page 2
Computer
Computer
Domäne
“harmonized collection, integration, exchange, presentation and analysis of maritime information
onboard”
“harmonized collection, integration, exchange, presentation and analysis of maritime information
ashore”
• The e-Navigation project identified some communication requirements
• Some of them can be solved with VDES (VHF Data Exchange System)
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VDES – VHF Data Exchange System
• AIS is becoming saturated. Primarily an anti-collision system
– AIS satellite frequencies (AIS SAT1 and SAT2) unchanged
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• ASM – Application Specific Messages, TXT and Binary messages in AIS moved
to new frequencies (ASM1 and ASM2). 25kHz bandwith.
– Modulation GMSK until 1’st of January 2019 (9,6 kbit/s)
– Modulation π/4 QPSK after 1’st of January 2019 (19,2 kbit/s)
AIS SAT1
and 2
• VDE consists of four 25 kHz channels. Providing 100 KHz bandwith.
Modulation (π/4 QPSK) gives us 153.6 kbit/s throughput (shared)
• Separation and buffer added
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Full VDES capability
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Implementation plan
ref. draft IALA Guideline VDES (technical)
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ITU Specification (ITU-R M.2092)
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Recommendation ITU-R M.2092-0
Technical characteristics for a VHF data
exchange system (VDES) in the VHF
maritime mobile band
However the component of VDE Satellite
did not receive channel assignment at
WRC-15
-> planed for WRC-19
Built as annexes
– General about VDES Annex 1
– ASM Annex 2
– VDE Terrestrial Annex 3
– VDE Sat Annex x
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ASM experience from AIS
• AIS was developed with focus on the position messages and transfer of static
and dynamic information
• Binary and text messages were supported, but content was not fully designed
• US Coast Guard (USCG) and Army Core of Engineers (ACE) put a lot of effort
into designing Application Specific Messages (ASM) for AIS 8-10 years ago.
– More difficult when the structure of AIS was settled
• Learned from AIS development;
– The work with services started before the structure of VDES was fully settled
– When designing the content it is important to be aware that the bandwidth in
VDE is larger than for AIS, but it is still not large!
01.09.20167
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Development of terrestrial VDE(S) prototype
AIS, ASM and VDE in “one unit”
01.09.20168
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Terrestrial VDE with basis in AIS module
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ITU-R M.2092-0
(10/2015)
• Develop a terrestrial VDES module; AIS, ASM and VDE
• Basis in the AIS module – Keep the “form-factor”
• Direct sampling
• To be used in demonstrations in Q4
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NORSAT-2
VDES
antenna
AIS antenna
Gateway
antenna
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Camera
Solarcells
x
z
y
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Why do we need VDES
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Polar Communication
• Designing services; ongoing in IALA MSP Working group
Health Monitoring
Weather Forecasts
WW VTS
eNavigation
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Everything solved – time for relaxing?
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Nope….
There will be new requirements and challenges…
• Unmanned ships?
• Autonomous ships
• Remote piloting
• ……
All requiring more bandwidth
Connectingvessels.com
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kongsberg.com
Cato Giil Eliassen
Product Manager,
Navigation and Infrastructure