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Maritim Datakommunikasjon

VDESInnovasjonskonferansen e-nav.no 2016

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)

VDES – VHF Data Exchange System

• AIS is becoming saturated. Primarily an anti-collision system

– AIS satellite frequencies (AIS SAT1 and SAT2) unchanged

01.09.2016Page 3 WORLD CLASS - through people, technology and dedication.

• 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

Full VDES capability

01.09.2016Page 4 WORLD CLASS - through people, technology and dedication.

Implementation plan

ref. draft IALA Guideline VDES (technical)

01.09.2016 WORLD CLASS - through people, technology and dedication.Page 5

ITU Specification (ITU-R M.2092)

01.09.2016 WORLD CLASS - through people, technology and dedication.Page 6

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

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

Development of terrestrial VDE(S) prototype

AIS, ASM and VDE in “one unit”

01.09.20168

Terrestrial VDE with basis in AIS module

01.09.20169

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

NORSAT-2

VDES

antenna

AIS antenna

Gateway

antenna

+

Camera

Solarcells

x

z

y

Why do we need VDES

01.09.2016Page 11 WORLD CLASS - through people, technology and dedication.

Polar Communication

• Designing services; ongoing in IALA MSP Working group

Health Monitoring

Weather Forecasts

WW VTS

eNavigation

Everything solved – time for relaxing?

01.09.2016 WORLD CLASS - through people, technology and dedication.Page 12

Nope….

There will be new requirements and challenges…

• Unmanned ships?

• Autonomous ships

• Remote piloting

• ……

All requiring more bandwidth

Connectingvessels.com

kongsberg.com

Cato Giil Eliassen

Product Manager,

Navigation and Infrastructure

cato.eliassen@kongsberg.com