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{{Article Infobox2
|Category=GALILEO
|Category=GALILEO
|Title={{PAGENAME}}
|Editors=GMV
|Authors=GMV
|Level=Basic
|Level=Basic
|YearOfPublication=2011
|YearOfPublication=2011
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|Logo=GMV
|Title={{PAGENAME}}
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The [[GALILEO General Introduction|GALILEO ]]  System is an independent, global, European-controlled, satellite-based navigation system that aims at providing a number of guaranteed services to users equipped with Galileo-compatible receivers. The definition of the  [[GALILEO General Introduction|GALILEO ]] Services is based on a comprehensive review of user needs and market analysis. The Galileo mission and services was elaborated during the initial definition phase in consultation with user communities and the Member States and evolve to the services currently provided and described in further paragraphs from this article.   
The [[GALILEO General Introduction|GALILEO ]]  System will be an independent, global, European-controlled, satellite-based navigation system and will provide a number of guaranteed services to users equipped with Galileo-compatible receivers. The definition of the  [[GALILEO General Introduction|GALILEO ]] Services is based on a comprehensive review of user needs and market analysis<ref name="GALHLD"/>. The Galileo mission and services have been elaborated during the initial definition phase in consultation with user communities and the Member States.   


==Introduction==
==Introduction==
There will be some services provided autonomously by Galileo and other services resulting from the combined use of Galileo and other systems. This leads to the classification of the Galileo services into four categories:<ref name="GALHLD"> [http://ec.europa.eu/dgs/energy_transport/galileo/doc/galileo_hld_v3_23_09_02.pdf Galileo Mission High Level Definition], v3, September 2002.</ref>  
There are some services provided autonomously by Galileo and other services resulting from the combined use of Galileo and other systems. This leads to the classification of the Galileo services into four categories:<ref name="GALHLD"> Galileo Mission High Level Definition, v7.1.</ref>  


# GALILEO satellite-only services: These services will be provided worldwide and independently from other systems by combining the signals broadcast by the Galileo satellites. There is a wide range of possible applications with different operational requirements that have been grouped around the following five reference services:
# GALILEO satellite-only services: These services are provided worldwide and independently from other systems by combining the signals broadcast by the Galileo satellites. There is a wide range of possible applications with different operational requirements that have been grouped around the following reference services<ref name="Galileo Services GSA>[https://www.gsa.europa.eu/galileo/services Galileo services in GSA website]</ref>:
#* [[Galileo Open Service (OS)]].
#* [[Galileo Open Service (OS)]].
#* [[Galileo Safety of Life (SoL)]].
#* [[Galileo High Accuracy Service (HAS)]], previously known as Galileo Commercial Service (CS).
#* [[Galileo Commercial Service(CS)]].
#* [[Galileo  Public Regulated Service (PRS)]].
#* [[Galileo  Public Regulated Service (PRS)]].
#* [[Galileo Search and Rescue Service|Galileo Support to Search and Rescue Service (SAR)]].
#* [[Galileo Search and Rescue Service|Galileo Support to Search and Rescue Service (SAR)]].
# [[GNSS Augmentation| GALILEO locally assisted services]: The Galileo satellite-only services can be enhanced on a local basis through a combination of local elements. The result will be the provision of local services.
#:Initially, Galileo foresaw a [[Galileo Safety of Life (SoL)|Safety of Life (SoL) service]], which is currently being re-profiled, one of the solutions under assessment being [[ARAIM|ARAIM]].
# EGNOS services: [[EGNOS General Introduction|EGNOS ]] will provide over Europe an augmentation to GPS and GLONASS services. This service will allow for early experience in development of Galileo-like applications. The EGNOS services will be combined with the Galileo satellite-only services. This will allow higher performance levels to be met by using different sources of integrity and navigation information.
# [[GNSS Augmentation| GALILEO locally assisted services]]: The Galileo satellite-only services can be enhanced on a local basis through a combination of local elements. The result is the provision of local services.
# Galileo combined services: All the above-mentioned services will be combined with services provided by other navigation or communication systems. This possibility will improve the GNSS services availability at user level and open the door to a wide range of applications. The result will be the provision of combined services.
# [[EGNOS Services|EGNOS services]]: [[EGNOS General Introduction|EGNOS ]], the European regional satellite-based augmentation system (SBAS), will provide,in future evolutions, augmentation information to both GPS and Galileo constellations, to improve the performance of those global navigation systems. EGNOS v3 will provide new capabilities to support the augmentation of a second GPS signal (L5) and of the Galileo signals E1-E5. <ref name="EGNOS V3>[https://www.gsa.europa.eu/newsroom/news/airbus-awarded-egnos-v3-contract EGNOS V3 Contract in GSA website]</ref>.  
 
# Galileo combined services: All the above-mentioned services can be combined with services provided by other navigation or communication systems. This possibility will improve the GNSS services availability at user level and open the door to a wide range of applications. The result will be the provision of combined services.
==GALILEO satellite-only Services==


[[File:Galileo_Art.png‎‎|300px|Galileo Constelation (artistic interpretation)|thumb]]
More information related to EGNOS and Galileo locally assisted services could be found in their related articles in Navipedia.


The following Galileo satellite-only services will be provided worldwide and independently from other systems by combining Galileo signals-in-space:<ref>[http://www.esa.int/esaNA/galileo.html ESA Galileo web page]</ref>
==GALILEO satellite-only services==


* [[Galileo Open Service (OS)]] results from a combination of open signals, free of user charge, and provides position and timing performance competitive with other GNSS systems;
[[File:Galileo_Art.png‎‎|300px|Galileo Constellation (artistic interpretation)|thumb]]
* [[Galileo Safety-of-Life Service (SoL)]] improves the open service performance through the provision of timely warnings to the user when it fails to meet certain margins of accuracy ([[Integrity|integrity]]). It is envisaged that a service guarantee will be provided for this service. This service will be made available for [[Criticality of GNSS Applications#Categorization of the Criticality of GNSS Applications|safety-critical applications]] such as running trains, guiding cars, navigation and aviation;
* [[Galileo Commercial Service (CS)]] provides access to two additional signals, to allow for a higher data throughput rate and to enable users to improve accuracy. The signals are encrypted. It is envisaged that a service guarantee will be provided for this service. The Commercial Service allows for development of applications for professional or commercial use owing to improved performance and data with greater added value than that obtained through the open service;
* [[Galileo Public Regulated Service (PRS)]] provides position and timing to specific users requiring a high continuity of service, with controlled access. Two PRS navigation signals with encrypted ranging codes and data will be available: The Public Regulated Service is restricted to government-authorised users, for sensitive applications which require a high level of service continuity. This service is intended for security and strategic infrastructure (e.g. energy, telecommunications and finance);
* [[Galileo Search and Rescue Service|Galileo Support to Search and Rescue Service (SAR)]] represents the contribution of Europe to the international [http://www.cospas-sarsat.org/ COSPAS-SARSAT] co-operative effort on humanitarian Search and Rescue activities. Galileo is to play an important part of the Medium Earth Orbit Search and Rescue system (MEOSAR). Galileo satellites will be able to pick up signals from emergency beacons carried on ships, planes or persons and ultimately send these back to national rescue centres. From this, a rescue centre can know the precise location of an accident. At least one Galileo satellite will be in view of any point on Earth so near real-time distress alert is possible. In some cases, feedback could be sent back to a beacon, something which is only made possible by Galileo.


<gallery>
The following Galileo satellite-only services will be provided worldwide and independently from other systems by combining Galileo signals-in-space <ref name="Galileo Services GSA>[https://www.gsa.europa.eu/galileo/services Galileo services in GSA website]</ref> when it achieves its Full Operational Capability:
Image:egnos_2.png‎
* [[Galileo Open Service (OS)]] results from a combination of open signals, free of user charge, and provides position and timing performance. This service will include authentication capabilities in the future through [[Galileo Open Service Navigation Message Authentication | Galileo OS-NMA]];
Image:Helicopter and boat.jpg‎
* [[Galileo High Accuracy Service (HAS)]] A service complementing the OS by providing an additional navigation signal and added-value services in a different frequency band. The HAS signal can be encrypted in order to control the access to the Galileo HAS services.  
</gallery>
* [[Galileo Public Regulated Service (PRS)]] provides position and timing to specific users requiring a high continuity of service, with controlled access. The Public Regulated Service is restricted to government-authorized users, for sensitive applications which require a high level of service continuity. This service is intended for security and strategic infrastructure (e.g. energy, telecommunications and finance);
* [[Galileo Search and Rescue Service|Galileo Support to Search and Rescue Service (SAR)]] represents the contribution of Europe to the international [http://www.cospas-sarsat.int COSPAS-SARSAT] co-operative effort on humanitarian Search and Rescue activities. Galileo is to play an important part of the Medium Earth Orbit Search and Rescue system (MEOSAR). Galileo satellites are able to pick up signals from emergency beacons carried on ships, planes or persons and ultimately send these back to national rescue centers. From this, a rescue center can know the precise location of an accident. At least one Galileo satellite will be in view of any point on Earth so near real-time distress alert is possible. In some cases, feedback could be sent back to a beacon, something which is only made possible by Galileo.


During the Initial Operational Capability (IOC) phase, the GALILEO open service, the search and rescue service and the PRS will be provided. At this stage, however, accuracy and availability will not yet have reached their optimum levels.<ref name="Mid-term review">[http://ec.europa.eu/enterprise/newsroom/cf/_getdocument.cfm?doc_id=6321 Mid-term review of the European satellite radio navigation programmes]</ref>
The Galileo program was structured according to three main phases:<ref name="Mid-term review">[http://europa.eu/rapid/press-release_MEMO-11-26_en.htm Mid-term review of the European satellite radio navigation programmes]</ref><ref name="EC GAL Prog">[http://ec.europa.eu/growth/sectors/space/galileo_en European Commission (EC) - Galileo Programme]</ref> [[GALILEO_Future_and_Evolutions|In-Orbit Validation (IOV), Initial Operational Capability (IOC) and Full Operational Capability (FOC)]]. Galileo Initial Services <ref name="Galileo Initial Services in GSA website">[https://ec.europa.eu/commission/presscorner/detail/en/IP_16_4366 Galileo Initial Services in GSA website]</ref> are the first step towards the Full Operational Capability. The initial services offered by Galileo are Open Service (OS), the Public Regulated Service (PRS) and the Search and Rescue (SAR) service. The Return Link Capability of the Search and Rescue service was declared in January 2020. <ref name= "Return link"> [https://www.gsa.europa.eu/newsroom/news/galileo-return-link-service-declared-european-space-conference Galileo Return Link Service Declaration in GSA website]</ref> The performance of Galileo will gradually improve as additional services are added to the constellation.


For  more information about Performances of each services see the article [[GALILEO Performances|Galileo Performances]].
For  more information about performances of each service, see the article [[GALILEO Performances|Galileo Performances]].


==Notes==
<references group="footnotes"/>
==References==
==References==
<references/>
<references/>


[[Category:GALILEO]]
[[Category:GALILEO|Services]]

Latest revision as of 11:17, 29 January 2021


GALILEOGALILEO
Title Galileo Services
Edited by GMV
Level Basic
Year of Publication 2011
Logo GMV.png

The GALILEO System is an independent, global, European-controlled, satellite-based navigation system that aims at providing a number of guaranteed services to users equipped with Galileo-compatible receivers. The definition of the GALILEO Services is based on a comprehensive review of user needs and market analysis. The Galileo mission and services was elaborated during the initial definition phase in consultation with user communities and the Member States and evolve to the services currently provided and described in further paragraphs from this article.

Introduction

There are some services provided autonomously by Galileo and other services resulting from the combined use of Galileo and other systems. This leads to the classification of the Galileo services into four categories:[1]

  1. GALILEO satellite-only services: These services are provided worldwide and independently from other systems by combining the signals broadcast by the Galileo satellites. There is a wide range of possible applications with different operational requirements that have been grouped around the following reference services[2]:
    Initially, Galileo foresaw a Safety of Life (SoL) service, which is currently being re-profiled, one of the solutions under assessment being ARAIM.
  2. GALILEO locally assisted services: The Galileo satellite-only services can be enhanced on a local basis through a combination of local elements. The result is the provision of local services.
  3. EGNOS services: EGNOS , the European regional satellite-based augmentation system (SBAS), will provide,in future evolutions, augmentation information to both GPS and Galileo constellations, to improve the performance of those global navigation systems. EGNOS v3 will provide new capabilities to support the augmentation of a second GPS signal (L5) and of the Galileo signals E1-E5. [3].
  4. Galileo combined services: All the above-mentioned services can be combined with services provided by other navigation or communication systems. This possibility will improve the GNSS services availability at user level and open the door to a wide range of applications. The result will be the provision of combined services.

More information related to EGNOS and Galileo locally assisted services could be found in their related articles in Navipedia.

GALILEO satellite-only services

Galileo Constellation (artistic interpretation)

The following Galileo satellite-only services will be provided worldwide and independently from other systems by combining Galileo signals-in-space [2] when it achieves its Full Operational Capability:

  • Galileo Open Service (OS) results from a combination of open signals, free of user charge, and provides position and timing performance. This service will include authentication capabilities in the future through Galileo OS-NMA;
  • Galileo High Accuracy Service (HAS) A service complementing the OS by providing an additional navigation signal and added-value services in a different frequency band. The HAS signal can be encrypted in order to control the access to the Galileo HAS services.
  • Galileo Public Regulated Service (PRS) provides position and timing to specific users requiring a high continuity of service, with controlled access. The Public Regulated Service is restricted to government-authorized users, for sensitive applications which require a high level of service continuity. This service is intended for security and strategic infrastructure (e.g. energy, telecommunications and finance);
  • Galileo Support to Search and Rescue Service (SAR) represents the contribution of Europe to the international COSPAS-SARSAT co-operative effort on humanitarian Search and Rescue activities. Galileo is to play an important part of the Medium Earth Orbit Search and Rescue system (MEOSAR). Galileo satellites are able to pick up signals from emergency beacons carried on ships, planes or persons and ultimately send these back to national rescue centers. From this, a rescue center can know the precise location of an accident. At least one Galileo satellite will be in view of any point on Earth so near real-time distress alert is possible. In some cases, feedback could be sent back to a beacon, something which is only made possible by Galileo.

The Galileo program was structured according to three main phases:[4][5] In-Orbit Validation (IOV), Initial Operational Capability (IOC) and Full Operational Capability (FOC). Galileo Initial Services [6] are the first step towards the Full Operational Capability. The initial services offered by Galileo are Open Service (OS), the Public Regulated Service (PRS) and the Search and Rescue (SAR) service. The Return Link Capability of the Search and Rescue service was declared in January 2020. [7] The performance of Galileo will gradually improve as additional services are added to the constellation.

For more information about performances of each service, see the article Galileo Performances.

References

  1. ^ Galileo Mission High Level Definition, v7.1.
  2. ^ a b Galileo services in GSA website
  3. ^ EGNOS V3 Contract in GSA website
  4. ^ Mid-term review of the European satellite radio navigation programmes
  5. ^ European Commission (EC) - Galileo Programme
  6. ^ Galileo Initial Services in GSA website
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