WAAS Receivers - Revision history

Gema.Cueto at 08:53, 16 February 2021

2021-02-16T08:53:18Z

← Older revision		Revision as of 08:53, 16 February 2021
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	\|Title={{PAGENAME}}		\|Title={{PAGENAME}}
	}}		}}
	The Wide Area Augmentation System ([[WAAS General Introduction\|WAAS]]) is the United States [[SBAS General Introduction\|Satellite Based Augmentation System]]. The programme, started in 1992, is being carried out by the [http://www.faa.gov/ Federal Aviation Agency (FAA)]<ref name="FAA_NAV_HISTORY">[http://www.faa.gov Navigation Services - History - Satellite Navigation,] [http://www.faa.gov/ FAA.]</ref> and is specially developed for the civil aviation community.<ref name="FAA_WAAS">[http://www.faa.gov/about/office_org/headquarters_offices/ato/service_units/techops/navservices/gnss/waas/ Navigation Services - Wide Area Augmentation System (WAAS)], [http://www.faa.gov/ FAA.]</ref> The system, which was declared operational in late 2003,<ref name="STANFORD_WAAS">[~~http~~://~~waas~~.stanford.edu/research/waas~~.htm~~ Wide Area Differential GPS (WADGPS), Stanford University]</ref> currently supports thousands of aircraft instrument approaches in more than one thousand airports in USA and Canada.<ref name="APPROACHES">[http://www.faa.gov/about/office_org/headquarters_offices/ato/service_units/techops/navservices/gnss/approaches/index.cfm GNSS - GPS/WAAS Approaches,] [http://www.faa.gov/ Federal Aviation Agency (FAA).]</ref> WAAS service area includes CONUS, Alaska, Canada and Mexico.<ref name="WAASExpanded">[http://www.faa.gov/about/office_org/headquarters_offices/ato/service_units/techops/navservices/gnss/waas/news/ WAAS Service Expanded into Canada and Mexico, September 28, 2007,] [http://www.faa.gov/ Federal Aviation Agency (FAA).]</ref> The WAAS programme is continuously in evolution; ~~two~~ development phases have been already covered~~, a third is in progress~~, and there are plans to improve the capability of the system in parallel with the evolution of the SBAS standards towards a dual-frequency augmentation service.<ref name="EXTENSION">[http://www.faa.gov/about/office_org/headquarters_offices/ato/service_units/techops/navservices/gnss/library/satnav/media/SatNav_March08.pdf SatNav News, Vol. 33, March 2008,] [http://www.faa.gov/ Federal Aviation Agency (FAA).]</ref>		The Wide Area Augmentation System ([[WAAS General Introduction\|WAAS]]) is the United States [[SBAS General Introduction\|Satellite Based Augmentation System]]. The programme, started in 1992, is being carried out by the [http://www.faa.gov/ Federal Aviation Agency (FAA)]<ref name="FAA_NAV_HISTORY">[http://www.faa.gov Navigation Services - History - Satellite Navigation,] [http://www.faa.gov/ FAA.]</ref> and is specially developed for the civil aviation community.<ref name="FAA_WAAS">[http://www.faa.gov/about/office_org/headquarters_offices/ato/service_units/techops/navservices/gnss/waas/ Navigation Services - Wide Area Augmentation System (WAAS)], [http://www.faa.gov/ FAA.]</ref> The system, which was declared operational in late 2003,<ref name="STANFORD_WAAS">[https://gps.stanford.edu/research/currentcontinuing-research/waas-sbas Wide Area Differential GPS (WADGPS), Stanford University]</ref> currently supports thousands of aircraft instrument approaches in more than one thousand airports in USA and Canada.<ref name="APPROACHES">[http://www.faa.gov/about/office_org/headquarters_offices/ato/service_units/techops/navservices/gnss/approaches/index.cfm GNSS - GPS/WAAS Approaches,] [http://www.faa.gov/ Federal Aviation Agency (FAA).]</ref> WAAS service area includes CONUS, Alaska, Canada and Mexico.<ref name="WAASExpanded">[http://www.faa.gov/about/office_org/headquarters_offices/ato/service_units/techops/navservices/gnss/waas/news/ WAAS Service Expanded into Canada and Mexico, September 28, 2007,] [http://www.faa.gov/ Federal Aviation Agency (FAA).]</ref> The WAAS programme is continuously in evolution; three development phases have been already covered, and there are on-going plans to improve the capability of the system in parallel with the evolution of the SBAS standards towards a dual-frequency augmentation service.<ref name="EXTENSION">[http://www.faa.gov/about/office_org/headquarters_offices/ato/service_units/techops/navservices/gnss/library/satnav/media/SatNav_March08.pdf SatNav News, Vol. 33, March 2008,] [http://www.faa.gov/ Federal Aviation Agency (FAA).]</ref>

Claudia.Prajanu at 12:12, 30 September 2018

2018-09-30T12:12:59Z

Filipe.Pelica: Included editor logo.

2014-09-18T17:18:04Z

Included editor logo.

← Older revision		Revision as of 17:18, 18 September 2014
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	\|Level=Basic		\|Level=Basic
	\|YearOfPublication=2011		\|YearOfPublication=2011
			\|Logo=GMV
	\|Title={{PAGENAME}}		\|Title={{PAGENAME}}
	}}		}}

Teresa.Ferreira: /* WAAS Receivers */

2013-02-28T20:11:35Z

WAAS Receivers

← Older revision		Revision as of 20:11, 28 February 2013
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	Receiver manufacturers tend to provide output data in a combination of proprietary and standardized open formats, the most common of which include [http://www.nmea.org/ NMEA], [http://www.rtcm.org/ RTCM], [http://www.ntrip.org/ NTRIP] and [ftp://ftp.unibe.ch/aiub/rinex/rinex300.pdf RINEX] (Receiver INdependent EXchange).		Receiver manufacturers tend to provide output data in a combination of proprietary and standardized open formats, the most common of which include [http://www.nmea.org/ NMEA], [http://www.rtcm.org/ RTCM], [http://www.ntrip.org/ NTRIP] and [ftp://ftp.unibe.ch/aiub/rinex/rinex300.pdf RINEX] (Receiver INdependent EXchange).
	A GPS receiver with “WAAS Enabled” specification usually means that the receiver activates SBAS reception by default. It is important to have in mind that navigation services are developing swiftly, so keep in pace with [[SBAS Standards\|international standards]] is mandatory.		A GPS receiver with “WAAS Enabled” specification usually means that the receiver activates SBAS reception by default. It is important to have in mind that navigation services are developing swiftly, so keep in pace with [[SBAS Standards\|international standards]] is mandatory.

			More information on communication protocols can be found [[Interfaces_and_Protocols\| here]].

	* '''Certified receivers'''		* '''Certified receivers'''

Teresa.Ferreira: /* WAAS Receivers */

2012-03-09T11:59:46Z

WAAS Receivers

← Older revision		Revision as of 11:59, 9 March 2012
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	The WAAS signal-in-space (SIS) has been designed to minimize standard GPS receiver hardware modifications. Therefore, a WAAS-GPS receiver is like a GPS receiver but with special software inside that allows the receiver to lock onto the code used by the WAAS GEOs satellites and compute the WAAS corrections to the GPS signals. Apart from this, the receiver is just like a GPS receiver. This means that it can pick up GPS signals as well. It is also of the same size as a GPS receiver and uses the same type of antenna. Although the prime target of WAAS is the civil aviation user community, most of GPS receivers nowadays can be configured to receive and process WAAS signal-in-space (SIS), so they can benefit from the enhanced accuracy and/or integrity offered by WAAS.<ref name="SBAS RECEIVERS">[http://www.egnos-pro.esa.int/SBAS_receivers.pdf List of available SBAS receivers, ESA, March 2006.]</ref>		The WAAS signal-in-space (SIS) has been designed to minimize standard GPS receiver hardware modifications. Therefore, a WAAS-GPS receiver is like a GPS receiver but with special software inside that allows the receiver to lock onto the code used by the WAAS GEOs satellites and compute the WAAS corrections to the GPS signals. Apart from this, the receiver is just like a GPS receiver. This means that it can pick up GPS signals as well. It is also of the same size as a GPS receiver and uses the same type of antenna. Although the prime target of WAAS is the civil aviation user community, most of GPS receivers nowadays can be configured to receive and process WAAS signal-in-space (SIS), so they can benefit from the enhanced accuracy and/or integrity offered by WAAS.<ref name="SBAS RECEIVERS">[http://www.egnos-pro.esa.int/SBAS_receivers.pdf List of available SBAS receivers, ESA, March 2006.]</ref>

	* '''Receiver types''' <br> ~~WASS~~-GPS receivers can be designed using a chipset, hybrid component or an auxiliary card.<ref name=" EGNOS Portal-Receivers">[http://egnos-portal.gsa.europa.eu/developer-platform/developer-toolkit/receiver-list EGNOS Portal on EGNOS receivers ]</ref>		* '''Receiver types''' <br> WAAS-GPS receivers can be designed using a chipset, hybrid component or an auxiliary card.<ref name=" EGNOS Portal-Receivers">[http://egnos-portal.gsa.europa.eu/developer-platform/developer-toolkit/receiver-list EGNOS Portal on EGNOS receivers ]</ref>
	** Chipsets: the EGNOS solution is embedded in one or two components that are installed in a circuit board. Special care is to be put with the RF interface. This solution is the least expensive.		** Chipsets: the EGNOS solution is embedded in one or two components that are installed in a circuit board. Special care is to be put with the RF interface. This solution is the least expensive.
	** Hybrid components: a single component includes RF functions and data processing. With a cost higher than the chipset solution, the integration is simpler.		** Hybrid components: a single component includes RF functions and data processing. With a cost higher than the chipset solution, the integration is simpler.

Carlos.Lopez at 11:14, 23 February 2012

2012-02-23T11:14:02Z

← Older revision		Revision as of 11:14, 23 February 2012
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	{{Article Infobox2		{{Article Infobox2
	\|Category=WAAS		\|Category=WAAS
	\|Editors=GMV ~~A.D.~~		\|Editors=GMV
	\|Level=Basic		\|Level=Basic
	\|YearOfPublication=2011		\|YearOfPublication=2011

Carlos.Lopez at 10:25, 23 February 2012

2012-02-23T10:25:19Z

← Older revision		Revision as of 10:25, 23 February 2012
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	{{Article Infobox2		{{Article Infobox2
	\|Category=WAAS		\|Category=WAAS
	\|~~Authors~~=GMV		\|Editors=GMV A.D.
	\|Level=Basic		\|Level=Basic
	\|YearOfPublication=2011		\|YearOfPublication=2011
	~~\|Logo=GMV~~
	\|Title={{PAGENAME}}		\|Title={{PAGENAME}}
	}}		}}

Jose.Caro: /* WAAS Receivers */

2011-12-04T13:04:06Z

WAAS Receivers

← Older revision		Revision as of 13:04, 4 December 2011
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	The WAAS signal-in-space (SIS) has been designed to minimize standard GPS receiver hardware modifications. Therefore, a WAAS-GPS receiver is like a GPS receiver but with special software inside that allows the receiver to lock onto the code used by the WAAS GEOs satellites and compute the WAAS corrections to the GPS signals. Apart from this, the receiver is just like a GPS receiver. This means that it can pick up GPS signals as well. It is also of the same size as a GPS receiver and uses the same type of antenna. Although the prime target of WAAS is the civil aviation user community, most of GPS receivers nowadays can be configured to receive and process WAAS signal-in-space (SIS), so they can benefit from the enhanced accuracy and/or integrity offered by WAAS.<ref name="SBAS RECEIVERS">[http://www.egnos-pro.esa.int/SBAS_receivers.pdf List of available SBAS receivers, ESA, March 2006.]</ref>		The WAAS signal-in-space (SIS) has been designed to minimize standard GPS receiver hardware modifications. Therefore, a WAAS-GPS receiver is like a GPS receiver but with special software inside that allows the receiver to lock onto the code used by the WAAS GEOs satellites and compute the WAAS corrections to the GPS signals. Apart from this, the receiver is just like a GPS receiver. This means that it can pick up GPS signals as well. It is also of the same size as a GPS receiver and uses the same type of antenna. Although the prime target of WAAS is the civil aviation user community, most of GPS receivers nowadays can be configured to receive and process WAAS signal-in-space (SIS), so they can benefit from the enhanced accuracy and/or integrity offered by WAAS.<ref name="SBAS RECEIVERS">[http://www.egnos-pro.esa.int/SBAS_receivers.pdf List of available SBAS receivers, ESA, March 2006.]</ref>

	* '''Receiver types''' <br> WASS-GPS receivers can be designed using a chipset, hybrid component or an auxiliary card.		* '''Receiver types''' <br> WASS-GPS receivers can be designed using a chipset, hybrid component or an auxiliary card.<ref name=" EGNOS Portal-Receivers">[http://egnos-portal.gsa.europa.eu/developer-platform/developer-toolkit/receiver-list EGNOS Portal on EGNOS receivers ]</ref>
	** ~~Chipset~~: ~~consists of~~ one or two components that ~~must be~~ installed on a circuit board. ~~The routing of~~ the RF ~~part is sensitive~~. This ~~compact~~ solution is ~~also~~ the least expensive.		** Chipsets: the EGNOS solution is embedded in one or two components that are installed in a circuit board. Special care is to be put with the RF interface. This solution is the least expensive.
	** Hybrid ~~component~~: ~~consists of~~ a single component ~~integrating the~~ RF and ~~signal~~ processing ~~parts to be installed on~~ a ~~circuit board. Routing is easier compared to chipsets. The price is~~ higher than ~~for~~ the chipset solution.		** Hybrid components: a single component includes RF functions and data processing. With a cost higher than the chipset solution, the integration is simpler.
	** Auxiliary ~~card~~ (~~piggyback~~): all the ~~receiver~~ and ~~peripheral components~~ are ~~integrated on~~ a ~~ready-~~to~~-use card connected~~ to the ~~final product’s~~ main ~~circuit~~ board. It is ~~an ideal~~ solution for ~~prototyping~~ embedded applications. ~~This is the most expensive solution.~~		** Auxiliary cards (piggybacks): all the RF and processing functions are included in a single card designed to be attached to the main board. Although this is the highest cost solution, is also the best one for embedded applications.


	* '''Communication protocols and manufacturer’s specifications'''		* '''Communication protocols and manufacturer’s specifications'''
	~~Manufacturers generally use proprietary protocols which give access~~ to ~~almost all the~~ data ~~(pseudoranges~~, ~~satellite navigation messages~~, ~~SBAS messages, etc~~.~~) associated with a standardised protocol~~, ~~NMEA 0183. Some receivers also generate data in~~ [http://~~igscb~~.~~jpl~~.~~nasa~~.~~gov~~/~~igscb/data~~/~~format~~/~~rinex210~~.~~txt~~ RINEX] (Receiver INdependent EXchange) ~~format~~.
			Receiver manufacturers tend to provide output data in a combination of proprietary and standardized open formats, the most common of which include [http://www.nmea.org/ NMEA], [http://www.rtcm.org/ RTCM], [http://www.ntrip.org/ NTRIP] and [ftp://ftp.unibe.ch/aiub/rinex/rinex300.pdf RINEX] (Receiver INdependent EXchange).
	A GPS receiver with “WAAS Enabled” specification usually means that the receiver activates SBAS reception by default. It is important to have in mind that navigation services are developing swiftly, so keep in pace with [[SBAS Standards\|international standards]] is mandatory.		A GPS receiver with “WAAS Enabled” specification usually means that the receiver activates SBAS reception by default. It is important to have in mind that navigation services are developing swiftly, so keep in pace with [[SBAS Standards\|international standards]] is mandatory.

Rui.Pereira at 18:14, 8 November 2011

2011-11-08T18:14:53Z

← Older revision		Revision as of 18:14, 8 November 2011
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	{{Article Infobox2		{{Article Infobox2
	\|Category=WAAS		\|Category=WAAS
	~~\|Title={{PAGENAME}}~~
	\|Authors=GMV		\|Authors=GMV
	\|Level=Basic		\|Level=Basic
	\|YearOfPublication=2011		\|YearOfPublication=2011
	\|Logo=GMV		\|Logo=GMV
			\|Title={{PAGENAME}}
	}}		}}
			The Wide Area Augmentation System ([[WAAS General Introduction\|WAAS]]) is the United States [[SBAS General Introduction\|Satellite Based Augmentation System]]. The programme, started in 1992, is being carried out by the [http://www.faa.gov/ Federal Aviation Agency (FAA)]<ref name="FAA_NAV_HISTORY">[http://www.faa.gov/about/office_org/headquarters_offices/ato/service_units/techops/navservices/history/satnav/index.cfm Navigation Services - History - Satellite Navigation,] [http://www.faa.gov/ FAA.]</ref> and is specially developed for the civil aviation community.<ref name="FAA_WAAS">[http://www.faa.gov/about/office_org/headquarters_offices/ato/service_units/techops/navservices/gnss/waas/ Navigation Services - Wide Area Augmentation System (WAAS)], [http://www.faa.gov/ FAA.]</ref> The system, which was declared operational in late 2003,<ref name="STANFORD_WAAS">[http://waas.stanford.edu/research/waas.htm Wide Area Differential GPS (WADGPS), Stanford University]</ref> currently supports thousands of aircraft instrument approaches in more than one thousand airports in USA and Canada.<ref name="APPROACHES">[http://www.faa.gov/about/office_org/headquarters_offices/ato/service_units/techops/navservices/gnss/approaches/index.cfm GNSS - GPS/WAAS Approaches,] [http://www.faa.gov/ Federal Aviation Agency (FAA).]</ref> WAAS service area includes CONUS, Alaska, Canada and Mexico.<ref name="WAASExpanded">[http://www.faa.gov/about/office_org/headquarters_offices/ato/service_units/techops/navservices/gnss/waas/news/ WAAS Service Expanded into Canada and Mexico, September 28, 2007,] [http://www.faa.gov/ Federal Aviation Agency (FAA).]</ref> The WAAS programme is continuously in evolution; two development phases have been already covered, a third is in progress, and there are plans to improve the capability of the system in parallel with the evolution of the SBAS standards towards a dual-frequency augmentation service.<ref name="EXTENSION">[http://www.faa.gov/about/office_org/headquarters_offices/ato/service_units/techops/navservices/gnss/library/satnav/media/SatNav_March08.pdf SatNav News, Vol. 33, March 2008,] [http://www.faa.gov/ Federal Aviation Agency (FAA).]</ref>
	The Wide Area Augmentation System ([[~~Work in Progress:~~WAAS General Introduction\|WAAS]]) is the United States [[SBAS General Introduction\|Satellite Based Augmentation System]]. The programme, started in 1992, is being carried out by the [http://www.faa.gov/ Federal Aviation Agency (FAA)]<ref name="FAA_NAV_HISTORY">[http://www.faa.gov/about/office_org/headquarters_offices/ato/service_units/techops/navservices/history/satnav/index.cfm Navigation Services - History - Satellite Navigation,] [http://www.faa.gov/ FAA.]</ref> and is specially developed for the civil aviation community.<ref name="FAA_WAAS">[http://www.faa.gov/about/office_org/headquarters_offices/ato/service_units/techops/navservices/gnss/waas/ Navigation Services - Wide Area Augmentation System (WAAS)], [http://www.faa.gov/ FAA.]</ref> The system, which was declared operational in late 2003,<ref name="STANFORD_WAAS">[http://waas.stanford.edu/research/waas.htm Wide Area Differential GPS (WADGPS), Stanford University]</ref> currently supports thousands of aircraft instrument approaches in more than one thousand airports in USA and Canada.<ref name="APPROACHES">[http://www.faa.gov/about/office_org/headquarters_offices/ato/service_units/techops/navservices/gnss/approaches/index.cfm GNSS - GPS/WAAS Approaches,] [http://www.faa.gov/ Federal Aviation Agency (FAA).]</ref> WAAS service area includes CONUS, Alaska, Canada and Mexico.<ref name="WAASExpanded">[http://www.faa.gov/about/office_org/headquarters_offices/ato/service_units/techops/navservices/gnss/waas/news/ WAAS Service Expanded into Canada and Mexico, September 28, 2007,] [http://www.faa.gov/ Federal Aviation Agency (FAA).]</ref> The WAAS programme is continuously in evolution; two development phases have been already covered, a third is in progress, and there are plans to improve the capability of the system in parallel with the evolution of the SBAS standards towards a dual-frequency augmentation service.<ref name="EXTENSION">[http://www.faa.gov/about/office_org/headquarters_offices/ato/service_units/techops/navservices/gnss/library/satnav/media/SatNav_March08.pdf SatNav News, Vol. 33, March 2008,] [http://www.faa.gov/ Federal Aviation Agency (FAA).]</ref>

Timo.Kouwenhoven: Text replace - "|Authors=GMV." to "|Authors=GMV"

2011-11-01T14:03:14Z

Text replace - "|Authors=GMV." to "|Authors=GMV"

← Older revision		Revision as of 14:03, 1 November 2011
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	\|Category=WAAS		\|Category=WAAS
	\|Title={{PAGENAME}}		\|Title={{PAGENAME}}
	\|Authors=GMV.		\|Authors=GMV
	\|Level=Basic		\|Level=Basic
	\|YearOfPublication=2011		\|YearOfPublication=2011

← Older revision		Revision as of 12:12, 30 September 2018
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	\|Title={{PAGENAME}}		\|Title={{PAGENAME}}
	}}		}}
	The Wide Area Augmentation System ([[WAAS General Introduction\|WAAS]]) is the United States [[SBAS General Introduction\|Satellite Based Augmentation System]]. The programme, started in 1992, is being carried out by the [http://www.faa.gov/ Federal Aviation Agency (FAA)]<ref name="FAA_NAV_HISTORY">[http://www.faa.gov~~/about/office_org/headquarters_offices/ato/service_units/techops/navservices/history/satnav/index.cfm~~ Navigation Services - History - Satellite Navigation,] [http://www.faa.gov/ FAA.]</ref> and is specially developed for the civil aviation community.<ref name="FAA_WAAS">[http://www.faa.gov/about/office_org/headquarters_offices/ato/service_units/techops/navservices/gnss/waas/ Navigation Services - Wide Area Augmentation System (WAAS)], [http://www.faa.gov/ FAA.]</ref> The system, which was declared operational in late 2003,<ref name="STANFORD_WAAS">[http://waas.stanford.edu/research/waas.htm Wide Area Differential GPS (WADGPS), Stanford University]</ref> currently supports thousands of aircraft instrument approaches in more than one thousand airports in USA and Canada.<ref name="APPROACHES">[http://www.faa.gov/about/office_org/headquarters_offices/ato/service_units/techops/navservices/gnss/approaches/index.cfm GNSS - GPS/WAAS Approaches,] [http://www.faa.gov/ Federal Aviation Agency (FAA).]</ref> WAAS service area includes CONUS, Alaska, Canada and Mexico.<ref name="WAASExpanded">[http://www.faa.gov/about/office_org/headquarters_offices/ato/service_units/techops/navservices/gnss/waas/news/ WAAS Service Expanded into Canada and Mexico, September 28, 2007,] [http://www.faa.gov/ Federal Aviation Agency (FAA).]</ref> The WAAS programme is continuously in evolution; two development phases have been already covered, a third is in progress, and there are plans to improve the capability of the system in parallel with the evolution of the SBAS standards towards a dual-frequency augmentation service.<ref name="EXTENSION">[http://www.faa.gov/about/office_org/headquarters_offices/ato/service_units/techops/navservices/gnss/library/satnav/media/SatNav_March08.pdf SatNav News, Vol. 33, March 2008,] [http://www.faa.gov/ Federal Aviation Agency (FAA).]</ref>		The Wide Area Augmentation System ([[WAAS General Introduction\|WAAS]]) is the United States [[SBAS General Introduction\|Satellite Based Augmentation System]]. The programme, started in 1992, is being carried out by the [http://www.faa.gov/ Federal Aviation Agency (FAA)]<ref name="FAA_NAV_HISTORY">[http://www.faa.gov Navigation Services - History - Satellite Navigation,] [http://www.faa.gov/ FAA.]</ref> and is specially developed for the civil aviation community.<ref name="FAA_WAAS">[http://www.faa.gov/about/office_org/headquarters_offices/ato/service_units/techops/navservices/gnss/waas/ Navigation Services - Wide Area Augmentation System (WAAS)], [http://www.faa.gov/ FAA.]</ref> The system, which was declared operational in late 2003,<ref name="STANFORD_WAAS">[http://waas.stanford.edu/research/waas.htm Wide Area Differential GPS (WADGPS), Stanford University]</ref> currently supports thousands of aircraft instrument approaches in more than one thousand airports in USA and Canada.<ref name="APPROACHES">[http://www.faa.gov/about/office_org/headquarters_offices/ato/service_units/techops/navservices/gnss/approaches/index.cfm GNSS - GPS/WAAS Approaches,] [http://www.faa.gov/ Federal Aviation Agency (FAA).]</ref> WAAS service area includes CONUS, Alaska, Canada and Mexico.<ref name="WAASExpanded">[http://www.faa.gov/about/office_org/headquarters_offices/ato/service_units/techops/navservices/gnss/waas/news/ WAAS Service Expanded into Canada and Mexico, September 28, 2007,] [http://www.faa.gov/ Federal Aviation Agency (FAA).]</ref> The WAAS programme is continuously in evolution; two development phases have been already covered, a third is in progress, and there are plans to improve the capability of the system in parallel with the evolution of the SBAS standards towards a dual-frequency augmentation service.<ref name="EXTENSION">[http://www.faa.gov/about/office_org/headquarters_offices/ato/service_units/techops/navservices/gnss/library/satnav/media/SatNav_March08.pdf SatNav News, Vol. 33, March 2008,] [http://www.faa.gov/ Federal Aviation Agency (FAA).]</ref>


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	The WAAS signal-in-space (SIS) has been designed to minimize standard GPS receiver hardware modifications. Therefore, a WAAS-GPS receiver is like a GPS receiver but with special software inside that allows the receiver to lock onto the code used by the WAAS GEOs satellites and compute the WAAS corrections to the GPS signals. Apart from this, the receiver is just like a GPS receiver. This means that it can pick up GPS signals as well. It is also of the same size as a GPS receiver and uses the same type of antenna. Although the prime target of WAAS is the civil aviation user community, most of GPS receivers nowadays can be configured to receive and process WAAS signal-in-space (SIS), so they can benefit from the enhanced accuracy and/or integrity offered by WAAS.<ref name="SBAS RECEIVERS">[http://www.egnos-pro.esa.int/SBAS_receivers.pdf List of available SBAS receivers, ESA, March 2006.]</ref>		The WAAS signal-in-space (SIS) has been designed to minimize standard GPS receiver hardware modifications. Therefore, a WAAS-GPS receiver is like a GPS receiver but with special software inside that allows the receiver to lock onto the code used by the WAAS GEOs satellites and compute the WAAS corrections to the GPS signals. Apart from this, the receiver is just like a GPS receiver. This means that it can pick up GPS signals as well. It is also of the same size as a GPS receiver and uses the same type of antenna. Although the prime target of WAAS is the civil aviation user community, most of GPS receivers nowadays can be configured to receive and process WAAS signal-in-space (SIS), so they can benefit from the enhanced accuracy and/or integrity offered by WAAS.<ref name="SBAS RECEIVERS">[http://www.egnos-pro.esa.int/SBAS_receivers.pdf List of available SBAS receivers, ESA, March 2006.]</ref>

	* '''Receiver types''' <br> WAAS-GPS receivers can be designed using a chipset, hybrid component or an auxiliary card.<ref name=" EGNOS Portal-Receivers">[http://egnos-portal.gsa.europa.eu~~/developer-platform/developer-toolkit/receiver-list~~ EGNOS Portal on EGNOS receivers ]</ref>		* '''Receiver types''' <br> WAAS-GPS receivers can be designed using a chipset, hybrid component or an auxiliary card.<ref name=" EGNOS Portal-Receivers">[http://egnos-portal.gsa.europa.eu EGNOS Portal on EGNOS receivers ]</ref>
	** Chipsets: the EGNOS solution is embedded in one or two components that are installed in a circuit board. Special care is to be put with the RF interface. This solution is the least expensive.		** Chipsets: the EGNOS solution is embedded in one or two components that are installed in a circuit board. Special care is to be put with the RF interface. This solution is the least expensive.
	** Hybrid components: a single component includes RF functions and data processing. With a cost higher than the chipset solution, the integration is simpler.		** Hybrid components: a single component includes RF functions and data processing. With a cost higher than the chipset solution, the integration is simpler.
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	* '''Communication protocols and manufacturer’s specifications'''		* '''Communication protocols and manufacturer’s specifications'''

	Receiver manufacturers tend to provide output data in a combination of proprietary and standardized open formats, the most common of which include [http://www.nmea.org/ NMEA], [http://www.rtcm.org/ RTCM], ~~[http://www.ntrip.org/~~ NTRIP] and ~~[ftp://ftp.unibe.ch/aiub/rinex/rinex300.pdf~~ RINEX] (Receiver INdependent EXchange).		Receiver manufacturers tend to provide output data in a combination of proprietary and standardized open formats, the most common of which include [http://www.nmea.org/ NMEA], [http://www.rtcm.org/ RTCM], NTRIP and RINEX (Receiver INdependent EXchange).
	A GPS receiver with “WAAS Enabled” specification usually means that the receiver activates SBAS reception by default. It is important to have in mind that navigation services are developing swiftly, so keep in pace with [[SBAS Standards\|international standards]] is mandatory.		A GPS receiver with “WAAS Enabled” specification usually means that the receiver activates SBAS reception by default. It is important to have in mind that navigation services are developing swiftly, so keep in pace with [[SBAS Standards\|international standards]] is mandatory.

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	* '''Certified receivers'''		* '''Certified receivers'''
	The civil aviation certified equipment is in the highest rank with respect its cost. There exist a large number of certified receivers manufacturers worldwide, including:<ref name="WAAS STATUS">[http://www.afceaboston.com~~/documents/events/cnsatm2011/Briefs/03-Wednesday/Wednesday-AM/04-Eldredge-FAA%20SAT%20NAV.pdf~~ WAAS Program Update, 2011, FAA]</ref>		The civil aviation certified equipment is in the highest rank with respect its cost. There exist a large number of certified receivers manufacturers worldwide, including:<ref name="WAAS STATUS">[http://www.afceaboston.com WAAS Program Update, 2011, FAA]</ref>
	* [http://www.garmin.com/garmin/cms/site/us GARMIN]		* [http://www.garmin.com/garmin/cms/site/us GARMIN]
	* [http://honeywell.com/Pages/Home.aspx Honeywell]		* [http://honeywell.com/Pages/Home.aspx Honeywell]