EGNOS Ground Segment - Revision history

Gema.Cueto: /* EGNOS V3 GROUND SEGMENT UPDATES */

2019-04-05T05:42:30Z

EGNOS V3 GROUND SEGMENT UPDATES

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	*Maintaining and updating RIMS and NLES specifications as needed to support EGNOS V3 system performance analysis (this includes survey of specifications provided as CFI by the customer (e.g. scintillation specifications, RIMS and NLES RFI environment specifications, User Rx standards (e.g. new L5 DFMC SBAS MOPS), survey of NLES specification provided by the Customer).		*Maintaining and updating RIMS and NLES specifications as needed to support EGNOS V3 system performance analysis (this includes survey of specifications provided as CFI by the customer (e.g. scintillation specifications, RIMS and NLES RFI environment specifications, User Rx standards (e.g. new L5 DFMC SBAS MOPS), survey of NLES specification provided by the Customer).
	In that role the RIMS and NLES performance engineer has to pro-actively interface with the RIMS and NLES sub-system developers as well as the system performance engineers.		In that role the RIMS and NLES performance engineer has to pro-actively interface with the RIMS and NLES sub-system developers as well as the system performance engineers.
	For successful working the RIMS and NLES performance engineer must be able to anticipate the system performance needs and translate them into RIMS and NLES performance requirements. ~~[3]~~		For successful working the RIMS and NLES performance engineer must be able to anticipate the system performance needs and translate them into RIMS and NLES performance requirements.
	The current EGNOS augments the accuracy of GPS signals across Europe and informs users of their current reliability level within six seconds. EGNOS belongs to a family of systems called Satellite Based Augmentation Systems (SBAS); the EGNOS V3 second generation will augment both GPS and Galileo, but it will not augment GLONASS.		The current EGNOS augments the accuracy of GPS signals across Europe and informs users of their current reliability level within six seconds. EGNOS belongs to a family of systems called Satellite Based Augmentation Systems (SBAS); the EGNOS V3 second generation will augment both GPS and Galileo, but it will not augment GLONASS.



	==Notes==		==Notes==

Gema.Cueto: /* NLES */

2019-04-05T05:40:51Z

NLES

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	The messages elaborated by the CPF at the Master MCC are transmitted to the NLESs. The NLES stations receive the EGNOS messages from all the CPFs for the upload of the		The messages elaborated by the CPF at the Master MCC are transmitted to the NLESs. The NLES stations receive the EGNOS messages from all the CPFs for the upload of the
	data stream to the geostationary satellites and the generation of the GPS-like signal. Using the quality of service (QOS) and the integrity flags provided by the CPFs, the NLES		data stream to the geostationary satellites and the generation of the GPS-like signal. Using the quality of service (QOS) and the integrity flags provided by the CPFs, the NLES
	stations are able to select automatically the best CPF among the four available. For each of the three EGNOS geostationary satellites to upload, two dedicated NLES stations (one active and one as a hot backup) are deployed, for a total of six operational NLES stations. ~~The NLES stations and its Geostationary satellites could be consulted in the following link: <ref>[https://gssc.esa.int/navipedia/index.php/EGNOS_Ground_Segment NLES stations]</ref>~~		stations are able to select automatically the best CPF among the four available. For each of the three EGNOS geostationary satellites to upload, two dedicated NLES stations (one active and one as a hot backup) are deployed, for a total of six operational NLES stations.

	The two NLES stations connected to a specific geostationary satellite are totally interchangeable. The switch from the active station to the backup station is managed by the		The two NLES stations connected to a specific geostationary satellite are totally interchangeable. The switch from the active station to the backup station is managed by the
	CPF running as master and occurs when the active station is no more broadcasting. The NLES broadcast may be interrupted because of internal failures or after the action of		CPF running as master and occurs when the active station is no more broadcasting. The NLES broadcast may be interrupted because of internal failures or after the action of

Gema.Cueto: /* EGNOS RIMS */

2019-04-05T05:38:36Z

EGNOS RIMS

← Older revision		Revision as of 05:38, 5 April 2019
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	[[File:RIMS.png\| EGNOS RIMS Sites \|300px\|thumb\|right]]		[[File:RIMS.png\| EGNOS RIMS Sites \|300px\|thumb\|right]]

	The main function of the RIMS is to collect measurements from GPS satellites and to transmit these raw data every second to the Central Processing Facilities (CPF) of each MCC. The initial configuration ~~includes~~ 34 RIMS sites located over a wide geographical area.		The main function of the RIMS is to collect measurements from GPS satellites and to transmit these raw data every second to the Central Processing Facilities (CPF) of each MCC. The initial configuration included 34 RIMS sites located over a wide geographical area.

	In order to improve the performance of the EGNOS system and enlarge the area where the EGNOS services can be used, ~~an extension of the monitoring network is expected soon which will see the deployment of~~ additional RIMS in La Palma, (Spain), Athens (Greece) and Alexandria (Egypt). A further extension is also planned in a slightly longer timeframe that should improve the EGNOS performance in the southern parts of the service area. Figure 3 shows the geographical distribution of the RIMS already in operation and the RIMS current under deployment.		In order to improve the performance of the EGNOS system and enlarge the area where the EGNOS services can be used, additional RIMS where deployed in La Palma, (Spain), Athens (Greece) and Alexandria (Egypt). A further extension is also planned in a slightly longer timeframe that should improve the EGNOS performance in the southern parts of the service area. Figure 3 shows the current geographical distribution of the RIMS already in operation and the RIMS current under deployment.

	==EGNOS CPF==		==EGNOS CPF==

Gema.Cueto: /* EGNOS RIMS */

2019-04-05T05:28:45Z

EGNOS RIMS

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	==EGNOS RIMS==		==EGNOS RIMS==
	[[File:RIMS.png\| EGNOS RIMS Sites [\|300px\|thumb\|right]]		[[File:RIMS.png\| EGNOS RIMS Sites \|300px\|thumb\|right]]

	The main function of the RIMS is to collect measurements from GPS satellites and to transmit these raw data every second to the Central Processing Facilities (CPF) of each MCC. The initial configuration includes 34 RIMS sites located over a wide geographical area.		The main function of the RIMS is to collect measurements from GPS satellites and to transmit these raw data every second to the Central Processing Facilities (CPF) of each MCC. The initial configuration includes 34 RIMS sites located over a wide geographical area.

Gema.Cueto: /* EGNOS RIMS */

2019-04-05T05:28:31Z

EGNOS RIMS

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	==EGNOS RIMS==		==EGNOS RIMS==
	[[File:RIMS.png\| EGNOS RIMS Sites ~~<ref name=RIMS>[https://egnos-user-support.essp-sas.eu/new_egnos_ops/sites/default/files/documents/egnos_sol_sdd_in_force.pdf]<ref>~~[\|300px\|thumb\|right]]		[[File:RIMS.png\| EGNOS RIMS Sites [\|300px\|thumb\|right]]

	The main function of the RIMS is to collect measurements from GPS satellites and to transmit these raw data every second to the Central Processing Facilities (CPF) of each MCC. The initial configuration includes 34 RIMS sites located over a wide geographical area.		The main function of the RIMS is to collect measurements from GPS satellites and to transmit these raw data every second to the Central Processing Facilities (CPF) of each MCC. The initial configuration includes 34 RIMS sites located over a wide geographical area.
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	These two parameters can be used to determine an aggregate error bounded by the horizontal and vertical position errors. Such information is of special interest for Safety of Life users but may also be beneficial to other communities needing to know the uncertainty in the position determined by the user receiver.		These two parameters can be used to determine an aggregate error bounded by the horizontal and vertical position errors. Such information is of special interest for Safety of Life users but may also be beneficial to other communities needing to know the uncertainty in the position determined by the user receiver.

	The CPF includes a large number of monitoring functions designed to detect any anomaly in GPS and in the EGNOS system itself and is able to warn users within a very short timeframe (less than 6 seconds) in case of an error exceeding a certain threshold.		The CPF includes a large number of monitoring functions designed to detect any anomaly in GPS and in the EGNOS system itself and is able to warn users within a very short timeframe (less than 6 seconds) in case of an error exceeding a certain threshold.

	==NLES==		==NLES==

Gema.Cueto: /* EGNOS RIMS */

2019-04-05T05:28:06Z

EGNOS RIMS

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	==EGNOS RIMS==		==EGNOS RIMS==
	[[File:~~RIMS_sites~~.~~JPG~~\| EGNOS RIMS Sites \|300px\|thumb\|right]]		[[File:RIMS.png\| EGNOS RIMS Sites <ref name=RIMS>[https://egnos-user-support.essp-sas.eu/new_egnos_ops/sites/default/files/documents/egnos_sol_sdd_in_force.pdf]<ref>[\|300px\|thumb\|right]]

	The main function of the RIMS is to collect measurements from GPS satellites and to transmit these raw data every second to the Central Processing Facilities (CPF) of each MCC. The initial configuration includes 34 RIMS sites located over a wide geographical area.		The main function of the RIMS is to collect measurements from GPS satellites and to transmit these raw data every second to the Central Processing Facilities (CPF) of each MCC. The initial configuration includes 34 RIMS sites located over a wide geographical area.

Gema.Cueto at 05:22, 5 April 2019

2019-04-05T05:22:29Z

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	\|Title={{PAGENAME}}		\|Title={{PAGENAME}}
	}}		}}
	The EGNOS Ground Segment comprises a network of Ranging Integrity Monitoring Stations (RIMS), ~~four~~ Mission Control Centres (MCC), ~~six~~ Navigation Land Earth Stations (NLES), and the EGNOS Wide Area Network (EWAN) which provides the communication network for all the components of the ground segment. Two additional facilities are also deployed as part of the ground segment to support system operations and service provision, namely the Performance Assessment and Checkout Facility		The EGNOS Ground Segment comprises a network of Ranging Integrity Monitoring Stations (RIMS), two Mission Control Centres (MCC), two Navigation Land Earth Stations (NLES) per GEO satellite, and the EGNOS Wide Area Network (EWAN) which provides the communication network for all the components of the ground segment. Two additional facilities are also deployed as part of the ground segment to support system operations and service provision, namely the Performance Assessment and Checkout Facility
	(PACF) and the Application Specific Qualification Facility (ASQF), which are operated by the EGNOS Service Provider ~~(ESSP SAS)~~.<ref name=" EGNOS SoL SDD">[http://www.essp-sas.eu/service_definition_documents EGNOS Service Definition Documents (SDD) ]</ref>		(PACF) and the Application Specific Qualification Facility (ASQF), which are operated by the EGNOS Service Provider.<ref name=" EGNOS SoL SDD">[http://www.essp-sas.eu/service_definition_documents EGNOS Service Definition Documents (SDD) ]</ref>

	The EGNOS system is a widely distributed and redundant system and data flows from one subsystem to another subsystem have different level of criticality.		The EGNOS system is a widely distributed and redundant system and data flows from one subsystem to another subsystem have different level of criticality.

Gema.Cueto at 14:40, 29 November 2018

2018-11-29T14:40:44Z

← Older revision		Revision as of 14:40, 29 November 2018
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	==EGNOS RIMS==		==EGNOS RIMS==
	[[File:RIMS_sites.JPG\| EGNOS RIMS Sites \|~~290px~~\|thumb\|right]]		[[File:RIMS_sites.JPG\| EGNOS RIMS Sites \|300px\|thumb\|right]]

	The main function of the RIMS is to collect measurements from GPS satellites and to transmit these raw data every second to the Central Processing Facilities (CPF) of each MCC. The initial configuration includes 34 RIMS sites located over a wide geographical area.		The main function of the RIMS is to collect measurements from GPS satellites and to transmit these raw data every second to the Central Processing Facilities (CPF) of each MCC. The initial configuration includes 34 RIMS sites located over a wide geographical area.

Gema.Cueto at 10:47, 22 November 2018

2018-11-22T10:47:22Z

@@ Line 98: / Line 98: @@
 The messages elaborated by the CPF at the Master MCC are transmitted to the NLESs. The NLES stations receive the EGNOS messages from all the CPFs for the upload of the
 data stream to the geostationary satellites and the generation of the GPS-like signal. Using the quality of service (QOS) and the integrity flags provided by the CPFs, the NLES
-stations are able to select automatically the best CPF among the four available. For each of the three EGNOS geostationary satellites to upload, two dedicated NLES stations (one active and one as a hot backup) are deployed, for a total of six operational NLES stations.
+stations are able to select automatically the best CPF among the four available. For each of the three EGNOS geostationary satellites to upload, two dedicated NLES stations (one active and one as a hot backup) are deployed, for a total of six operational NLES stations. The NLES stations and its Geostationary satellites could be consulted in the following link: <ref>[https://gssc.esa.int/navipedia/index.php/EGNOS_Ground_Segment NLES stations]</ref>
 The two NLES stations connected to a specific geostationary satellite are totally interchangeable. The switch from the active station to the backup station is managed by the
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 * ASQF (Application Specific Qualification Facility) provides civil aviation and aeronautical certification authorities with the tools to qualify validate and certify the different EGNOS applications.
 * DVP (Development & Verification Platform) is used to validate and verify EGNOS requirements during the design phase. It contains simulation facilities, a real-time testbed and an assembly, integration and verification platform. The DVP is incorporated in PACF.

Filipe.Pelica: Included editor logo.

2014-09-18T17:05:50Z

Included editor logo.

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	\|YearOfPublication=2011		\|YearOfPublication=2011
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