1 2003 - TriaGnoSys GmbH - All rights reserved The Role of Satellites and Passenger Communications for Future Air Traffic Management Markus Werner TriaGnoSys GmbH
Mar 27, 2015
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The Role of Satellitesand Passenger Communications
for Future Air Traffic Management
Markus WernerTriaGnoSys GmbH
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Future Air Traffic Management
The Vision – formulated in EC report “European Aeronautics: a Vision for 2020” (1/2001)– make Europe a global leader in aviation market, based on scientific and
technological excellence– while air traffic is continuously growing, provide
> safety: increase flight security, reduce accidents> capacity: reduce congestion> passenger service and reliability: fewer delays> environmental care: reduce noise and gaseous emissions
Quantitative targets can not be achieved without major changes in concepts!
Recent Major Initiatives:– Boeing ATM business unit established 11/2000; strong cooperation with
FAA– Airbus, EADS, Thales Air Traffic Alliance, formed 7/2002– ESA and Eurocontrol Agreement, signed 8/2002
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Future ATM over Satellite
Motivation and Approach– use integrated communications, navigation
& surveillance (CNS) services
– global ATM requires satellites
– truly global operation may be a case for non-GEO constellations
– a European GEO as “entry” into a strong European satellite ATM initiative?
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Roadmap: Key Elements
Global satellite network for navigation (Galileo)
Global satellite network(s) for communications a tailored system design is required– as entry/proof-of-concept a European GEO solution (one satellite) is
required in the mid-term– in parallel or as next step use of a global GEO constellation (e.g.
Inmarsat-4)– for truly global coverage the long-term solution would be non-GEO
(MEO)
Trajectory calculation/adaptation:– Automation– Optimization algorithms/tools– Huge processing power
High-precision navigation and advanced communication must be really integrated ( on functional level!)
Advanced CNS/ATM must provide a clearly extended service spectrum and higher capacity
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Roadmap: Key Elements (cont‘d)
Clear transition from voice to data comms
Frequency issues– Need for one unique “block” of primary-use frequency band for all
types of ATM/ATC services?– or possibility to split safety-critical / AOC / “nice-to-have” added
value services … ?
QoS requirements– Qualitative and quantitative specification of requirements?!
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Roadmap: Key Milestones
Availability of systems or system components
GPS including future developments Galileo
SDLS Inmarsat (B-GAN) … WirelessCabin … FlyNet …
Tailored concepts/architectures for– Global satellite-based (overlay) ATM network– Functional integration of Com and Nav– Advanced data communications and relation between
data&voice
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Need for Market Estimation Most promising business case perspective is a combined one:
CNS/ATM (non-safety-critical) and modern passenger communications
Flight routes
Satellite coverage
Multiserviceuser&traffic
usage type
service s
s
[1/h] 1/s
[s]Rs,f
[kbps] Rs,r
[kbps] bs
[-] voice 0.2 180 9.6 9.6 0.35 email 10 3 16 16 1.0
heavy
http x y 32 3.2 0.05 voice 0.1 120 9.6 9.6 0.35 email 5 2 16 16 1.0
medium
http x/2 y/5 32 3.2 0.05 voice 9.6 9.6 0.35 email 2 1 16 16 1.0
light
http x/4 y/10 32 3.2 0.05
Capacity requirements(peak, average, dynamics …)
Business model
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Some Facts on QoS, Reliability etc. of SatComs
based on the position paperPUSH A BIT
Providing Unprecedented Satellite EnHanced Aeronautical Passenger Communications to Boost Improved Air Traffic Control Services
assumingWirelessCabin system
Data rates (kbit/s): 64 (Swift 64), 432 (B-GAN), 2000 (Connexion) Latency: 270ms RTD, all additional delays comparable to terrestrial;
connection set-up delay only few RTDs (permanently available link for traffic aggregates)
Handover/Diversity: seamless for two antennas, <10sec for one antenna QoS: service quality for both voice and data comparable to terrestrial,
e.g. GSM voice quality and Internet/WLAN packet error rates Availability: mainly function of geographic coverage Redundancy & backup: 1) multiple coverage (diversity)
2) cold redundancy (in-orbit spares)
3) hot redundancy (co-location)
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Some more long-term research issues …
… but not unrealistic to bring some elements into future satellite ATM within the time frame 2020+
IPv6 and VPN Interworking of space-ground communications Point-to-point comms “party-line” comms true multicast
approaches Frequency planning, unique frequencies throughout flight, … Satellite handover and diversity
Very futuristic, but definitely worth a vision:- optical sat/aircraft links- ad-hoc networking sat/AC and AC/AC …