View
1.428
Download
3
Category
Tags:
Preview:
Citation preview
Navigation solutions powered by Europe
Engineering the Galileo Services Exploitation Phase
Dr. ing. Marco LISIEuropean Space Agency
Special Advisor of the European Commission
International Workshop on "GNSS technologies advances in a multiconstellation framework“
SOGEI, Roma, 23rd April 2013
Objectives
To explain what a service oriented, large and complex system means;
To present the Galileo present status and the preparation to its Early Services phase;
To describe the engineering activities needed for the provision of Galileo services;
To suggest that beyond the obvious technological and technical challenges, a service provision perspective opens new and interesting fields to systems engineering.
What is a service system?
Service (or service-oriented) systems are systems meant to provide value-added services through the use of technology (mainly communications and computer technologies);
A “service system” has been defined as a dynamic configuration of people, technology, organizational networks and shared information (such as languages, processes, metrics, prices, policies, and laws) designed to deliver services that satisfy the needs, wants, or aspirations of customers.
4
Characteristics of Service Systems Large and complex systems Software intensive (several million lines of code) Capabilities-based rather than platform-based Organization and governance (human factor) Technical performance is a prerequisite for
production and delivery of services, not a final objective Requirements related to operations, in addition to
technical ones, assume a very high relevance:Quality of Service (QoS) FlexibilityReliability, Availability, Continuity ExpandabilityMaintainability InteroperabilitySafety ResilienceSecurity
5
Products vs. Services
Cars
Highways
Trains
Railways
Stations
Parking areas
Aircrafts
Airports
Ships
Etc.
6
Large and Complex Systems (1/2)A large and complex system is a system composed of a large number of interconnected elements, often developed and deployed worldwide, which interact dynamically, giving rise to emergent propertiesExamples of complex systems for civil applications include: global satellite navigation systems air traffic control systems railway control systems space systems such as the International Space Station or space
transportation and exploration vehicles surveillance, Earth observation and Homeland security systems electric power distribution systems telecommunication systems complex computer networks, including Internet.
7
Large and Complex Systems (2/2)A complex system often integrates existing systems (or parts of them) in an overall large-scale architecture containing a large number of interfaces and implementing multiple modes of operation, in a highly dynamic environmentLarge and complex systems require extensive logistics and maintenance support capabilitiesLarge and complex space-based systems (e.g. Galileo) are conceived to be in service for a long time; in this case the evolution of the system (up-gradings and modifications) has to be taken into account from the beginning.
8
Project/System Multiple Perspectives
9
Specifying a Service System Functional and technical performance:
• System Requirements Document (SRD) Operational requirements and scenarios:
• Concept of Operations (CONOPS) document Expected service behavior and non-functional
performance:• Service Level Agreement (SLA)
A typical SLA defines Key Performance Indicators (KPI’s) and Key Quality Indicators (KQI’s), with target values and target ranges to be achieved over a certain time period.
10
Concept of Operations (CONOPS)
11
Galileo Program essentials Galileo is Europe's initiative for a state-of-the-art global navigation satellite system, providing a highly accurate, guaranteed global positioning service under civilian control While providing autonomous navigation and positioning services, Galileo will at the same time be interoperable with GPS and GLONASS, the two other global satellite navigation systems The fully deployed Galileo system will consist of 30 satellites and the associated ground infrastructure.
The Galileo System
13
GALILEO: a Large and Complex ICT System
toexternalService
Providersand otherentities
~ 40 GSS
Constellation - 30 MEO Satellites
ERIS - External Regional Integrity Systems
GCS - Galileo Control System
GMS - Galileo Mission System
GSS - Galileo Sensor Stations
MDDN - Mission Data Dissemination Network
NRS - Navigation Related Service
PRS - Public Regulated Service
SAR - Search And Rescue
SDDN - Satallite Data Dissemination Network
TT&C - Telemetry, Tracking and Telecommand
ULS - Up-Link Station
Galileo Control Centre 2 (GCC2)(geographical redundant)
Galileo Control Centre 1 (GCC1)
ERIS13 m antenna
TT&C S-band Up-linkMission C-band Up-link
(Nav/Integ/SAR/NRS/PRS)5 combined Galileo Up-links Sites
(global coverage)
Total: 5 S-band heads Total: at least 31 C-band heads
Mission C-band Up-link(Nav/Integ/SAR/NRS/PRS)
+ 4 dedicated Mission Up-linksSites
... Direct C-band Up-linksfor Integrity
SDDN MDDN/ ULS Network
MDDN/ GSS Network
Elements of GCS and GMS
Elements of GMS
Elements of GCS
Ground Control and Mission Segments Facilities
14
The Galileo “System of Systems”
The Galileo Timeline
Galileo Implementation Plan
Galileo System Architecture
Galileo Service Centers in Europe
Galileo Stations for Early Services
Galileo Services
Galileo Services Provision Timeline
The Galileo Service Center
Early Services impose significant constraints on all key Galileo actors, in order to:
Prerequisites for Providing Early Services
Ensure early and continuous operation of Galileo system
Ensure early and continuous operation of the GSMC for handling security events
Ensure early provision of user interfaces, e.g. to service centres
Ensure proper definition and implementation of service validation activities
Ensure proper and timely definition of liability regimes
Characteristics
Free of charge positioning, navigation and timing informationGalileo Open Service is fully interoperable with GPS
Users
Mass-market applications (i.e. smartphones, in-car navigation)Additional applications such as timing, surveying, farming, fleet management, passenger information systems …
Next steps
Provide early Galileo Open Service from 2014Autonomous and continuous service available when the full constellation is deployed
Galileo Open Service (OS)
Open Service (OS) Freely accessible service forpositioning and timing
Because of the reduced constellation deployed by 2014, the OS early service will not provide a standalone serviceSignals will be available for users and will provide benefits when combined with GPS or other constellations, by providing good ranging accuracy online monitoring of OS SIS and timely isolation/flagging
of any OS SIS which are not reaching minimum performance levels
EC/ESA/GSA currently defining the performance commitment for early servicesNumber of signals available and positioning accuracy will increase with the deployment of additional satellitesFull autonomous PVT performance will be declared at FOC
Galileo OS – Early Service in 2014
Phased approach tied to infrastructure deploymentThe early service milestone in 2014 will be linked to a minimum deployed infrastructure configuration to be defined as part of the service requirements derivation and gap analysis.
The autonomous service milestone in 2016 is planned with a more complete constellation and with fully deployed ground infrastructure. This will allow declaration of an autonomous early service, with performance parameters that will improve with further satellite deployments, up to FOC.
Galileo OS – Phased introduction
Galileo user helpdesk facility will be available already in October 2012. operated under the supervision of the GSA
Galileo Service Centre (GSC) is being set up in Madrid provides interfaces to all users of Galileo OS (as well as CS) support to receiver manufacturers support to service providers
Main system operations (GMS / GCC) are ensured until 2016 preparations for operations after 2016 are proceeding
Galileo Reference Centre (GRC) - Independent performance monitoring centre is being established
Ground infrastructure for early OS
Current Galileo Governance
Galileo Integrated ApproachThe provision of Galileo services will be a process well distinct from the Galileo system development & acquisition process;A Service Management specific process, including methodology, best practices and organization, is required;However, system (acquisition) and service (provision) have to proceed together, in a coordinated and well harmonized manner;An integrated approach is required, with a systems engineering perspective covering both system and service related aspects.
Galileo Development & Acquisition Process
GalileoSystem
Assets(Satellite Constellation, GCC’s,
GCS, GMS, GDDN, etc.)
Galileo System Requirements
Galileo System Performance &
Operations
People(ESA Project Team,
Subco’s, EC, GSA, etc.)
Processes(Engineering Board, VCB,
CCB, CM, Ops Procedures, etc.)
Galileo Service Provision Process
GalileoServices
Assets(Galileo System, GSC, GPEC, etc.)
Galileo Services
Requirements
Galileo Services Provision
People(EC, GSA, ESA Support, Member States, Services
Providers, Operators, etc.)
Processes(Services Validation, KPIs
Monitoring, Security Monitoring, Helpdesk, etc.)
32
What do we mean by "service"?By the term “service” we mean the guaranteed and committed delivery of a capability to a community of potential customers/users;In the delivery of a service, the focus is more on the “commitment” (continued over time) than on the “technical performance” (provided that the service delivered is useful and responds to a minimum set of guaranteed technical requirements).
Service ManagementService Management is a set of specialized organizational capabilities for providing value to users/customers in the form of services;These organizational capabilities include all the processes, methods, functions, roles and activities that Service Providers uses to enable them to deliver services to their customers;The inputs to Service Management are the resources and capabilities that represent the assets of the Service Provider. The outputs are the services that provide value to users;The focus of Service Management is on the service delivery process which is different from a system development and acquisition process (focussed on technology and technical performance);From the Service Management viewpoint technologies and technical performance are means, not final objectives.
What is ITIL?ITIL (Information Technology Infrastructure Library) is a public framework (and a “de facto” standard) that describes Best Practices in IT Service Management;Although originally conceived and developed for IT-based services, the ITIL methodology and practices are applicable to the management of a generic service provision process;The Galileo service provision organization will have as its main and essential asset what can be seen as a large and complex ICT system (network based, computational intensive, software intensive);ITIL could therefore be a good reference for the Galileo Service Management definition.
Service Lifecycle (ITIL Standard)
The ITIL Process Model
Conclusions After a development, initial procurement and
In-Orbit Validation phase, Galileo is proceeding with the procurement and in-orbit deployment of the full constellation and will start providing Early Services by the end of 2014;
Large and complex service systems, such as Galileo, need a very collaborative integration of systems engineering, operations engineering and service management, with special attention to operational, governance and Integrated Logistic Support aspects.
Korean
Thank You
English
Russian
DankeGerman
GrazieItalian
GraciasSpanish
ObrigadoBrazilian
PortugueseArabic
Simplified Chinese
Traditional Chinese
Thai
MerciFrench
Japanese
Recommended