Catherine Morlet – catherine.morlet@esa.int Erling Kristiansen – erling.kristiansen@esa.int Technical Directorate ESA/ESTEC ICAO WG-I meeting, 25-29 August 2008
Iris Architecture options : use cases Iris Architecture options : use cases Continental airspace + oceanic Continental airspace + oceanic TMA / ENR (continental Airport ORP area: dual link ) Login (no traffic) Airport FCI terrestrial network� network Satcom System Wide Information Management (SWIM) 2 European ATCC European ATCC
Iris Phases are aligned with SESAR schedule ICAO WG-I meeting 25-29 August 2008 3
Objectives of Iris Phase 1 Objectives of Iris Phase 1 Emphasis on key areas: Preparation work to support the SESAR Master Plan • – Initiate development of the communication standard – Initiate identification of the most efficient satcom system architecture Consider non-technical issues from the start: • – Business case – Service provision and governance model – ESA hand-over after development/deployment – Validation and qualification with SESAR Support frequencies allocation • – Contribute to estimations of spectrum requirements (e.g. ICAO WG-F and ITU WP4C) ICAO WG-I meeting 25-29 August 2008 4
Outcome of Iris Phase 1 studies Outcome of Iris Phase 1 studies Satellite Communication Analysis & Design of System studies Satellite System studies studies 1Q08 ICOS + Phoenix AVISAT + Samara Iris Phase A to 3Q08 Ant Diplexer LNA ...011010 Outside 1001010.. Inside HPA Tx Rx Up/Dwn Cvtr Ctrl Com. System MODEM Satellite PWR Base-Band Unit Avionic Bay System Preliminary Avionics Preliminary Preliminary Design Design Design Service provision + Specifications Specifications Business case model Outcome expected � What is new/COTS? � Which type of � Which types of protocols? � Who operates what? architecture? � Antennas: where? � Are COCR performances � Who procures what? � Dependability? how many? achievable? � Financing scheme?... � Target cost?... � Target cost?... � Link budget?... ICAO WG-I meeting 25-29 August 2008 5
Communication System Design activity Communication System Design activity The activity includes: Trade-off of existing and possible new standards • Analysis and consolidation of user requirement as documented by SESAR • Communication architecture design • Interfaces with SESAR terrestrial network • Definition of aircraft avionics • Design of associated hardware and software, development, validation and • qualification procedures. Software simulator for validation • Preparation of ICAO standardisation and certification activities • Preparation of ICAO standard (technical basis to support update of performance-based SARPS and preparation of a Technical Manual) ICAO WG-I meeting 25-29 August 2008 6
Analysis and Definition of Satellite System Analysis and Definition of Satellite System The activity includes: Analysis and consolidation of user requirements as documented by SESAR, • and needs for possible ancillary services (to support business case) All trade-offs on architecture, payload, platform, ground segment, • deployment and operations schemes and provision of possible ancillary services, starting from existing/projected satcom infrastructure: Iris is NOT designing new satellites Assessment of the business case for the provision of services • Preliminary analysis of integration of Satcom into SESAR’s overall • infrastructure (SESAR task in the future). Certification issues regarding the operators and operation of the satellite • system Definition of the operational responsibilities and liabilities in the service • provision scheme. Prepare all elements to define the satellite service provision ICAO WG-I meeting 25-29 August 2008 7
Iris Programme: Iris Programme: Participating States and users ’ ’ involvement involvement Participating States and users Iris programme Phase 1 funding has been secured by 10 Participating States (among ESA 17 Member States) Austria France Germany Ireland Italy Norway Portugal Spain Switzerland UK Iris Expert Group: users’ voice in the Programme Core members : DSNA, DFS, NATS, LFV, Nav Portugal, Avinor, HCAA, Iberia, IATA, Eurocontrol, EASA + invitees on specific topics (e.g. SITA, ARINC, Business Airlines, Low Fare Airlines, Helicopter Association, Inmarsat...) ICAO WG-I meeting 25-29 August 2008 8
Next steps Next steps A dynamic has been created, fostering collaboration between • industry, experts and R&D entities of both space and aeronautics background Results of Phase A studies will be available from 3Q08 • The next milestone is ESA Ministerial Conference in November • 2008 which will fund Phase 2 activities ICAO WG-I meeting 25-29 August 2008 9
Conclusions on the Iris programme Conclusions on the Iris programme Following WG-T recommended actions, ESA is developing a set of technical options • for a new Satcom open standard that will be proposed for discussion with international parties and brought to ICAO once the technical design is sufficiently mature Definition of this new communication system starts from the aircraft avionics side (i.e. • the cost multiplier) rather than from the satellite side. An effort is being made to minimise the operational and equipment costs, and • especially to make sure that the equipment can be supplied and operated worldwide. ESA mandate is to support the adoption of new satellite solutions where justified for • the benefit of society. ‘Justified’ means a solid cost/benefits case, not technology for the sake of technology. The Iris programme is not about developing new satellites. Through cooperation with Eurocontrol and SESAR, ESA will aim to obtain wide • international support for standardisation of this new satellite communication system. ICAO WG-I meeting 25-29 August 2008 10
Communication System Design Architecture
Iris scope Iris scope ATN/IPS ATN/OSI ATN/IPS ATN/IPS Iris ICAO WG-I meeting 25-29 August 2008 12
Objectives Phase A Objectives Phase A Analysis of options and initial trade-offs for the architecture of • the communication system and the communication protocols in the frame of SESAR technical and operation concept – Characterise user requirements (technical and commercial) – Characterise the most efficient solution to meet » Safety, » Seamless integration, » Interoperability requirements – Characterise the new avionics and its cost – Characterise the ground equipments and cost – Define developments required In Phase B, the design of a new or adapted satellite-based • communication standard is targeted ICAO WG-I meeting 25-29 August 2008 13
Key features Phase A Key features Phase A Evaluation of capacity needs for 2025 • Communication design suitable for all type of space segment • architecture (satellite orbit, number of beams, frequency of the fixed link…) and supporting voice and data communication using limited spectrum Architecture flexible and scalable to be extended to any region • of the world with any ground segment constraint (e.g. number of ground stations) Avionics cost to be kept low. Key parameters are the operation • mode (mono or multi-frequency) and the technology to limit power consumption and heating ICAO WG-I meeting 25-29 August 2008 14
Analysis ATM traffic profile Analysis ATM traffic profile The design shall be optimised for the traffic profile expected • – Message length – Quality of service – Safety criticality – Security – Bandwidth occupancy Initial work is performed to characterise the ATM traffic • ICAO WG-I meeting 25-29 August 2008 15
Analysis ATM traffic profile (2) Analysis ATM traffic profile (2) Example message sizes on the forward link: • ICAO WG-I meeting 25-29 August 2008 16
Analysis ATM traffic profile (3) Analysis ATM traffic profile (3) Example message sizes on the return link: • ICAO WG-I meeting 25-29 August 2008 17
Analysis ATM traffic profile (4) Analysis ATM traffic profile (4) Aircraft traffic profile (without transport layer acknowledgments) • for the forward link (similar on the return link) 1400 1200 1000 Length message 800 600 400 200 0 53552.812 53878.057 54504.129 54812.877 55084.868 5 Time in s econds ICAO WG-I meeting 25-29 August 2008 18
SESAR dual link concept SESAR dual link concept SESAR prescribes the simultaneous availability of two independent A/G • links It is not yet clear how this is to be operated. The following general options • seem to present themselves: 1. Logged on to one link. The other in stand-by, not logged on 2. Logged on to both links, but using one only at a given time. The backup is ready for immediate use 3. Logged on to both links, sending some traffic on one link, some on the other according to some rule 4. Logged on to both links, sending all traffic in parallel on both Option 4 is clearly the most reliable, but also the most resource-hungry • ICAO WG-I meeting 25-29 August 2008 19
Selected Subjects on Iris Satcom
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