Differential GNSS - Revision history

Claudia.Prajanu at 16:06, 23 July 2018

2018-07-23T16:06:59Z

← Older revision		Revision as of 16:06, 23 July 2018
Line 18:		Line 18:
	When GPS is the only constellation used for the Differential GNSS technique, the system is called [[Differential GPS\|DGPS]]. [[Differential GPS\|DGPS]] accuracy is in the order of 1 m (1 sigma) for users in the range of few tens of km from the reference station, growing at the rate of 1 m per 150 km of separation.		When GPS is the only constellation used for the Differential GNSS technique, the system is called [[Differential GPS\|DGPS]]. [[Differential GPS\|DGPS]] accuracy is in the order of 1 m (1 sigma) for users in the range of few tens of km from the reference station, growing at the rate of 1 m per 150 km of separation.

	The DGNSS term can refer to specific implementations using DGNSS technique. It is often used to refer specifically to [[DGNSS Systems\|systems]] that re-broadcast the corrections from ground-based short-range transmitters. For instance, the [http://www.uscg.mil/ United States Coast Guard] and [http://www.ccg-gcc.gc.ca/ Canadian Coast Guard] run one such system in the US and Canada on the longwave radio frequencies between 285 kHz and 325 kHz. These frequencies are commonly used for marine radio, and are broadcast near major waterways and harbors. Australia runs two DGPS systems: one is mainly for marine navigation, run by [~~http~~://www.amsa.gov.au/~~Shipping_Safety~~/~~Navigation_Safety~~/~~Differential_Global_Postitioning_System/Service_Status/index.asp~~ Australian Maritime Safety Authority], broadcasting its signal on the longwave band; the other is used for land surveys and land navigation, and has corrections broadcast on the Commercial FM radio band.<ref>[[Wikipedia:DGPS\|DGNSS in Wikipedia]]</ref>		The DGNSS term can refer to specific implementations using DGNSS technique. It is often used to refer specifically to [[DGNSS Systems\|systems]] that re-broadcast the corrections from ground-based short-range transmitters. For instance, the [http://www.uscg.mil/ United States Coast Guard] and [http://www.ccg-gcc.gc.ca/ Canadian Coast Guard] run one such system in the US and Canada on the longwave radio frequencies between 285 kHz and 325 kHz. These frequencies are commonly used for marine radio, and are broadcast near major waterways and harbors. Australia runs two DGPS systems: one is mainly for marine navigation, run by [https://www.amsa.gov.au/safety-navigation/navigation-systems/australias-differential-global-positioning-system Australian Maritime Safety Authority], broadcasting its signal on the longwave band; the other is used for land surveys and land navigation, and has corrections broadcast on the Commercial FM radio band.<ref>[[Wikipedia:DGPS\|DGNSS in Wikipedia]]</ref>

	There are other DGNSS techniques used by high-precision navigation/surveying applications, based on the use of carrier phase measurements. These are the cases of the [[Real Time Kinematics\|Real Time Kinematics (RTK)]] and the [[Wide Area RTK (WARTK)\|Wide Area RTK (WARTK)]].		There are other DGNSS techniques used by high-precision navigation/surveying applications, based on the use of carrier phase measurements. These are the cases of the [[Real Time Kinematics\|Real Time Kinematics (RTK)]] and the [[Wide Area RTK (WARTK)\|Wide Area RTK (WARTK)]].

Filipe.Pelica: Included editor logo.

2014-09-18T17:10:47Z

Included editor logo.

← Older revision		Revision as of 17:10, 18 September 2014
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	\|Level=Basic		\|Level=Basic
	\|YearOfPublication=2011		\|YearOfPublication=2011
			\|Logo=GMV
	\|Title={{PAGENAME}}		\|Title={{PAGENAME}}
	}}		}}

Carlos.Lopez at 11:28, 23 February 2012

2012-02-23T11:28:13Z

← Older revision		Revision as of 11:28, 23 February 2012
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	{{Article Infobox2		{{Article Infobox2
	\|Category=Fundamentals		\|Category=Fundamentals
	\|~~Authors~~=GMV		\|Editors=GMV
	\|Level=Basic		\|Level=Basic
	\|YearOfPublication=2011		\|YearOfPublication=2011
	~~\|Logo=GMV~~
	\|Title={{PAGENAME}}		\|Title={{PAGENAME}}
	}}		}}

Rui.Pereira at 17:52, 8 November 2011

2011-11-08T17:52:42Z

← Older revision		Revision as of 17:52, 8 November 2011
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	{{Article Infobox2		{{Article Infobox2
	\|Category=Fundamentals		\|Category=Fundamentals
	~~\|Title={{PAGENAME}}~~
	\|Authors=GMV		\|Authors=GMV
	\|Level=Basic		\|Level=Basic
	\|YearOfPublication=2011		\|YearOfPublication=2011
	\|Logo=GMV		\|Logo=GMV
			\|Title={{PAGENAME}}
	}}		}}

	Differential GNSS (DGNSS) is a kind of [[GNSS Augmentation]] system based on an enhancement to primary GNSS constellation(s) information by the use of a network of ground-based reference stations which enable the broadcasting of differential information to the user – also named rover – to improve the accuracy of his position – the integrity is not assured.		Differential GNSS (DGNSS) is a kind of [[GNSS Augmentation]] system based on an enhancement to primary GNSS constellation(s) information by the use of a network of ground-based reference stations which enable the broadcasting of differential information to the user – also named rover – to improve the accuracy of his position – the integrity is not assured.
	There are several DGNSS techniques, such as the [[~~Work in Progress:~~DGNSS Fundamentals\|classical DGNSS]] (or [[~~Work in Progress:~~Differential GPS\|DGPS]]), the [[~~Work in Progress:~~Real Time Kinematics\|Real Time Kinematics (RTK)]] and the [[~~Work in Progress:~~Wide Area RTK (WARTK)\|Wide Area RTK (WARTK)]].		There are several DGNSS techniques, such as the [[DGNSS Fundamentals\|classical DGNSS]] (or [[Differential GPS\|DGPS]]), the [[Real Time Kinematics\|Real Time Kinematics (RTK)]] and the [[Wide Area RTK (WARTK)\|Wide Area RTK (WARTK)]].

	==Differential GNSS==		==Differential GNSS==
Line 15:		Line 14:
	[[File:Claas_Baseline_HD.jpg\|Transportable DGNSS reference station\|thumb\|250px]]		[[File:Claas_Baseline_HD.jpg\|Transportable DGNSS reference station\|thumb\|250px]]

	The classical [[~~Work in Progress:~~DGNSS Fundamentals\|DGNSS technique]] is an enhancement to a primary GNSS system that consists of the determination of the GNSS position for an accurately-surveyed position known as reference station. Given that the position of the reference station is accurately known, the deviation of the measured position to the actual position and more importantly the corrections to the measured pseudoranges to each of the individual satellites can be calculated. These corrections can thereby be used for the correction of the measured positions of other GNSS user receivers.		The classical [[DGNSS Fundamentals\|DGNSS technique]] is an enhancement to a primary GNSS system that consists of the determination of the GNSS position for an accurately-surveyed position known as reference station. Given that the position of the reference station is accurately known, the deviation of the measured position to the actual position and more importantly the corrections to the measured pseudoranges to each of the individual satellites can be calculated. These corrections can thereby be used for the correction of the measured positions of other GNSS user receivers.

	When GPS is the only constellation used for the Differential GNSS technique, the system is called [[~~Work in Progress:~~Differential GPS\|DGPS]]. [[~~Work in Progress:~~Differential GPS\|DGPS]] accuracy is in the order of 1 m (1 sigma) for users in the range of few tens of km from the reference station, growing at the rate of 1 m per 150 km of separation.		When GPS is the only constellation used for the Differential GNSS technique, the system is called [[Differential GPS\|DGPS]]. [[Differential GPS\|DGPS]] accuracy is in the order of 1 m (1 sigma) for users in the range of few tens of km from the reference station, growing at the rate of 1 m per 150 km of separation.

	The DGNSS term can refer to specific implementations using DGNSS technique. It is often used to refer specifically to [[~~Work in Progress:~~DGNSS Systems\|systems]] that re-broadcast the corrections from ground-based short-range transmitters. For instance, the [http://www.uscg.mil/ United States Coast Guard] and [http://www.ccg-gcc.gc.ca/ Canadian Coast Guard] run one such system in the US and Canada on the longwave radio frequencies between 285 kHz and 325 kHz. These frequencies are commonly used for marine radio, and are broadcast near major waterways and harbors. Australia runs two DGPS systems: one is mainly for marine navigation, run by [http://www.amsa.gov.au/Shipping_Safety/Navigation_Safety/Differential_Global_Postitioning_System/Service_Status/index.asp Australian Maritime Safety Authority], broadcasting its signal on the longwave band; the other is used for land surveys and land navigation, and has corrections broadcast on the Commercial FM radio band.<ref>[[Wikipedia:DGPS\|DGNSS in Wikipedia]]</ref>		The DGNSS term can refer to specific implementations using DGNSS technique. It is often used to refer specifically to [[DGNSS Systems\|systems]] that re-broadcast the corrections from ground-based short-range transmitters. For instance, the [http://www.uscg.mil/ United States Coast Guard] and [http://www.ccg-gcc.gc.ca/ Canadian Coast Guard] run one such system in the US and Canada on the longwave radio frequencies between 285 kHz and 325 kHz. These frequencies are commonly used for marine radio, and are broadcast near major waterways and harbors. Australia runs two DGPS systems: one is mainly for marine navigation, run by [http://www.amsa.gov.au/Shipping_Safety/Navigation_Safety/Differential_Global_Postitioning_System/Service_Status/index.asp Australian Maritime Safety Authority], broadcasting its signal on the longwave band; the other is used for land surveys and land navigation, and has corrections broadcast on the Commercial FM radio band.<ref>[[Wikipedia:DGPS\|DGNSS in Wikipedia]]</ref>

	There are other DGNSS techniques used by high-precision navigation/surveying applications, based on the use of carrier phase measurements. These are the cases of the [[~~Work in Progress:~~Real Time Kinematics\|Real Time Kinematics (RTK)]] and the [[~~Work in Progress:~~Wide Area RTK (WARTK)\|Wide Area RTK (WARTK)]].		There are other DGNSS techniques used by high-precision navigation/surveying applications, based on the use of carrier phase measurements. These are the cases of the [[Real Time Kinematics\|Real Time Kinematics (RTK)]] and the [[Wide Area RTK (WARTK)\|Wide Area RTK (WARTK)]].

	==DGNSS Related Articles==		==DGNSS Related Articles==

	The following articles include further information about different important topics related to a Differential GNSS:		The following articles include further information about different important topics related to a Differential GNSS:
	* [[~~Work in Progress:~~DGNSS Fundamentals\|DGNSS Fundamentals]] introduces the classical DGNSS technique, its functionalities and the objectives of a DGNSS system.		* [[DGNSS Fundamentals\|DGNSS Fundamentals]] introduces the classical DGNSS technique, its functionalities and the objectives of a DGNSS system.

	* The [[~~Work in Progress:~~DGNSS Standards\|DGNSS Standards]] article summarizes the international bodies in charge of the standardization of DGNSS systems, the principle applicable documents and its current status.		* The [[DGNSS Standards\|DGNSS Standards]] article summarizes the international bodies in charge of the standardization of DGNSS systems, the principle applicable documents and its current status.

	* [[~~Work in Progress:~~DGNSS Systems\|DGNSS Systems]] sections provide a brief overview of the current existing DGNSS systems.		* [[DGNSS Systems\|DGNSS Systems]] sections provide a brief overview of the current existing DGNSS systems.

	==Notes==		==Notes==

Rui.Pereira: moved Work in Progress:Differential GNSS to Differential GNSS

2011-06-30T12:26:43Z

moved Work in Progress:Differential GNSS to Differential GNSS

← Older revision	Revision as of 12:26, 30 June 2011
(No difference)

Rui.Pereira at 14:33, 28 June 2011

2011-06-28T14:33:47Z

← Older revision		Revision as of 14:33, 28 June 2011
Line 9:		Line 9:

	Differential GNSS (DGNSS) is a kind of [[GNSS Augmentation]] system based on an enhancement to primary GNSS constellation(s) information by the use of a network of ground-based reference stations which enable the broadcasting of differential information to the user – also named rover – to improve the accuracy of his position – the integrity is not assured.		Differential GNSS (DGNSS) is a kind of [[GNSS Augmentation]] system based on an enhancement to primary GNSS constellation(s) information by the use of a network of ground-based reference stations which enable the broadcasting of differential information to the user – also named rover – to improve the accuracy of his position – the integrity is not assured.
	There are several DGNSS techniques, such as the [[Work in Progress:DGNSS Fundamentals\|classical DGNSS]] (or DGPS), the [[Work in Progress:Real Time Kinematics\|Real Time Kinematics (RTK)]] and the [[Work in Progress:Wide Area RTK (WARTK)\|Wide Area RTK (WARTK)]].		There are several DGNSS techniques, such as the [[Work in Progress:DGNSS Fundamentals\|classical DGNSS]] (or [[Work in Progress:Differential GPS\|DGPS]]), the [[Work in Progress:Real Time Kinematics\|Real Time Kinematics (RTK)]] and the [[Work in Progress:Wide Area RTK (WARTK)\|Wide Area RTK (WARTK)]].

	==Differential GNSS==		==Differential GNSS==
Line 17:		Line 17:
	The classical [[Work in Progress:DGNSS Fundamentals\|DGNSS technique]] is an enhancement to a primary GNSS system that consists of the determination of the GNSS position for an accurately-surveyed position known as reference station. Given that the position of the reference station is accurately known, the deviation of the measured position to the actual position and more importantly the corrections to the measured pseudoranges to each of the individual satellites can be calculated. These corrections can thereby be used for the correction of the measured positions of other GNSS user receivers.		The classical [[Work in Progress:DGNSS Fundamentals\|DGNSS technique]] is an enhancement to a primary GNSS system that consists of the determination of the GNSS position for an accurately-surveyed position known as reference station. Given that the position of the reference station is accurately known, the deviation of the measured position to the actual position and more importantly the corrections to the measured pseudoranges to each of the individual satellites can be calculated. These corrections can thereby be used for the correction of the measured positions of other GNSS user receivers.

	When GPS is the only constellation used for the Differential GNSS technique, the system is called DGPS. DGPS accuracy is in the order of 1 m (1 sigma) for users in the range of few tens of km from the reference station, growing at the rate of 1 m per 150 km of separation.		When GPS is the only constellation used for the Differential GNSS technique, the system is called [[Work in Progress:Differential GPS\|DGPS]]. [[Work in Progress:Differential GPS\|DGPS]] accuracy is in the order of 1 m (1 sigma) for users in the range of few tens of km from the reference station, growing at the rate of 1 m per 150 km of separation.

	The DGNSS term can refer to specific implementations using DGNSS technique. It is often used to refer specifically to [[Work in Progress:DGNSS Systems\|systems]] that re-broadcast the corrections from ground-based short-range transmitters. For instance, the [http://www.uscg.mil/ United States Coast Guard] and [http://www.ccg-gcc.gc.ca/ Canadian Coast Guard] run one such system in the US and Canada on the longwave radio frequencies between 285 kHz and 325 kHz. These frequencies are commonly used for marine radio, and are broadcast near major waterways and harbors. Australia runs two DGPS systems: one is mainly for marine navigation, run by [http://www.amsa.gov.au/Shipping_Safety/Navigation_Safety/Differential_Global_Postitioning_System/Service_Status/index.asp Australian Maritime Safety Authority], broadcasting its signal on the longwave band; the other is used for land surveys and land navigation, and has corrections broadcast on the Commercial FM radio band.<ref>[[Wikipedia:DGPS\|DGNSS in Wikipedia]]</ref>		The DGNSS term can refer to specific implementations using DGNSS technique. It is often used to refer specifically to [[Work in Progress:DGNSS Systems\|systems]] that re-broadcast the corrections from ground-based short-range transmitters. For instance, the [http://www.uscg.mil/ United States Coast Guard] and [http://www.ccg-gcc.gc.ca/ Canadian Coast Guard] run one such system in the US and Canada on the longwave radio frequencies between 285 kHz and 325 kHz. These frequencies are commonly used for marine radio, and are broadcast near major waterways and harbors. Australia runs two DGPS systems: one is mainly for marine navigation, run by [http://www.amsa.gov.au/Shipping_Safety/Navigation_Safety/Differential_Global_Postitioning_System/Service_Status/index.asp Australian Maritime Safety Authority], broadcasting its signal on the longwave band; the other is used for land surveys and land navigation, and has corrections broadcast on the Commercial FM radio band.<ref>[[Wikipedia:DGPS\|DGNSS in Wikipedia]]</ref>

Rui.Pereira at 10:02, 28 June 2011

2011-06-28T10:02:43Z

Jose.Caro at 15:14, 27 June 2011

2011-06-27T15:14:06Z

Jose.Caro: /* Differential GNSS */

2011-06-20T14:24:21Z

Differential GNSS

← Older revision		Revision as of 14:24, 20 June 2011
Line 21:		Line 21:
	The DGNSS term can refer to specific implementations using DGNSS technique. It is often used to refer specifically to [[Work in Progress:DGNSS Systems\|systems]] that re-broadcast the corrections from ground-based short-range transmitters. For instance, the [http://www.uscg.mil/ United States Coast Guard] and [http://www.ccg-gcc.gc.ca/ Canadian Coast Guard] run one such system in the US and Canada on the longwave radio frequencies between 285 kHz and 325 kHz. These frequencies are commonly used for marine radio, and are broadcast near major waterways and harbors. Australia runs two DGPS systems: one is mainly for marine navigation, run by [http://www.amsa.gov.au/Shipping_Safety/Navigation_Safety/Differential_Global_Postitioning_System/Service_Status/index.asp Australian Maritime Safety Authority], broadcasting its signal on the longwave band; the other is used for land surveys and land navigation, and has corrections broadcast on the Commercial FM radio band.<ref>[[Wikipedia:DGPS\|DGNSS in Wikipedia]]</ref>		The DGNSS term can refer to specific implementations using DGNSS technique. It is often used to refer specifically to [[Work in Progress:DGNSS Systems\|systems]] that re-broadcast the corrections from ground-based short-range transmitters. For instance, the [http://www.uscg.mil/ United States Coast Guard] and [http://www.ccg-gcc.gc.ca/ Canadian Coast Guard] run one such system in the US and Canada on the longwave radio frequencies between 285 kHz and 325 kHz. These frequencies are commonly used for marine radio, and are broadcast near major waterways and harbors. Australia runs two DGPS systems: one is mainly for marine navigation, run by [http://www.amsa.gov.au/Shipping_Safety/Navigation_Safety/Differential_Global_Postitioning_System/Service_Status/index.asp Australian Maritime Safety Authority], broadcasting its signal on the longwave band; the other is used for land surveys and land navigation, and has corrections broadcast on the Commercial FM radio band.<ref>[[Wikipedia:DGPS\|DGNSS in Wikipedia]]</ref>

	There are other DGNSS techniques used by high-precision navigation/surveying applications, based on the use of carrier phase measurements. These are the cases of the [[Work in Progress:Real Time Kinematics\|Real Time Kinematics (RTK)]] and the [[Wide Area RTK\|Wide Area RTK (WARTK)]]~~, where the differential GPS measurements are computed in real-time by specific GPS receivers if they receive a correction signal using a separate radio receiver~~.		There are other DGNSS techniques used by high-precision navigation/surveying applications, based on the use of carrier phase measurements. These are the cases of the [[Work in Progress:Real Time Kinematics\|Real Time Kinematics (RTK)]] and the [[Wide Area RTK\|Wide Area RTK (WARTK)]].

	==DGNSS Related Articles==		==DGNSS Related Articles==

Jose.Caro: /* Differential GNSS */

2011-06-20T14:22:43Z

Differential GNSS

← Older revision		Revision as of 14:22, 20 June 2011
Line 19:		Line 19:
	When GPS is the only constellation used for the Differential GNSS technique, the system is called DGPS. DGPS accuracy is in the order of 1 m (1 sigma) for users in the range of few tens of km from the reference station, growing at the rate of 1 m per 150 km of separation.		When GPS is the only constellation used for the Differential GNSS technique, the system is called DGPS. DGPS accuracy is in the order of 1 m (1 sigma) for users in the range of few tens of km from the reference station, growing at the rate of 1 m per 150 km of separation.

	The DGNSS term can refer to specific implementations using DGNSS technique. It is often used to refer specifically to [[Work in Progress:DGNSS Systems\|systems]] that re-broadcast the corrections from ground-based transmitters ~~of shorter range~~. For instance, the [http://www.uscg.mil/ United States Coast Guard] and [http://www.ccg-gcc.gc.ca/ Canadian Coast Guard] run one such system in the US and Canada on the longwave radio frequencies between 285 kHz and 325 kHz. These frequencies are commonly used for marine radio, and are broadcast near major waterways and harbors. Australia runs two DGPS systems: one is mainly for marine navigation, run by [http://www.amsa.gov.au/Shipping_Safety/Navigation_Safety/Differential_Global_Postitioning_System/Service_Status/index.asp Australian Maritime Safety Authority], broadcasting its signal on the longwave band; the other is used for land surveys and land navigation, and has corrections broadcast on the Commercial FM radio band.<ref>[[Wikipedia:DGPS\|DGNSS in Wikipedia]]</ref>		The DGNSS term can refer to specific implementations using DGNSS technique. It is often used to refer specifically to [[Work in Progress:DGNSS Systems\|systems]] that re-broadcast the corrections from ground-based short-range transmitters. For instance, the [http://www.uscg.mil/ United States Coast Guard] and [http://www.ccg-gcc.gc.ca/ Canadian Coast Guard] run one such system in the US and Canada on the longwave radio frequencies between 285 kHz and 325 kHz. These frequencies are commonly used for marine radio, and are broadcast near major waterways and harbors. Australia runs two DGPS systems: one is mainly for marine navigation, run by [http://www.amsa.gov.au/Shipping_Safety/Navigation_Safety/Differential_Global_Postitioning_System/Service_Status/index.asp Australian Maritime Safety Authority], broadcasting its signal on the longwave band; the other is used for land surveys and land navigation, and has corrections broadcast on the Commercial FM radio band.<ref>[[Wikipedia:DGPS\|DGNSS in Wikipedia]]</ref>

	There are other DGNSS techniques used by high-precision navigation/surveying applications, based on the use of carrier phase measurements. These are the cases of the [[Work in Progress:Real Time Kinematics\|Real Time Kinematics (RTK)]] and the [[Wide Area RTK\|Wide Area RTK (WARTK)]], where the differential GPS measurements are computed in real-time by specific GPS receivers if they receive a correction signal using a separate radio receiver.		There are other DGNSS techniques used by high-precision navigation/surveying applications, based on the use of carrier phase measurements. These are the cases of the [[Work in Progress:Real Time Kinematics\|Real Time Kinematics (RTK)]] and the [[Wide Area RTK\|Wide Area RTK (WARTK)]], where the differential GPS measurements are computed in real-time by specific GPS receivers if they receive a correction signal using a separate radio receiver.

← Older revision		Revision as of 16:06, 23 July 2018
Line 18:		Line 18:
	When GPS is the only constellation used for the Differential GNSS technique, the system is called [[Differential GPS\|DGPS]]. [[Differential GPS\|DGPS]] accuracy is in the order of 1 m (1 sigma) for users in the range of few tens of km from the reference station, growing at the rate of 1 m per 150 km of separation.		When GPS is the only constellation used for the Differential GNSS technique, the system is called [[Differential GPS\|DGPS]]. [[Differential GPS\|DGPS]] accuracy is in the order of 1 m (1 sigma) for users in the range of few tens of km from the reference station, growing at the rate of 1 m per 150 km of separation.

	The DGNSS term can refer to specific implementations using DGNSS technique. It is often used to refer specifically to [[DGNSS Systems\|systems]] that re-broadcast the corrections from ground-based short-range transmitters. For instance, the [http://www.uscg.mil/ United States Coast Guard] and [http://www.ccg-gcc.gc.ca/ Canadian Coast Guard] run one such system in the US and Canada on the longwave radio frequencies between 285 kHz and 325 kHz. These frequencies are commonly used for marine radio, and are broadcast near major waterways and harbors. Australia runs two DGPS systems: one is mainly for marine navigation, run by [~~http~~://www.amsa.gov.au/~~Shipping_Safety~~/~~Navigation_Safety~~/~~Differential_Global_Postitioning_System/Service_Status/index.asp~~ Australian Maritime Safety Authority], broadcasting its signal on the longwave band; the other is used for land surveys and land navigation, and has corrections broadcast on the Commercial FM radio band.<ref>[[Wikipedia:DGPS\|DGNSS in Wikipedia]]</ref>		The DGNSS term can refer to specific implementations using DGNSS technique. It is often used to refer specifically to [[DGNSS Systems\|systems]] that re-broadcast the corrections from ground-based short-range transmitters. For instance, the [http://www.uscg.mil/ United States Coast Guard] and [http://www.ccg-gcc.gc.ca/ Canadian Coast Guard] run one such system in the US and Canada on the longwave radio frequencies between 285 kHz and 325 kHz. These frequencies are commonly used for marine radio, and are broadcast near major waterways and harbors. Australia runs two DGPS systems: one is mainly for marine navigation, run by [https://www.amsa.gov.au/safety-navigation/navigation-systems/australias-differential-global-positioning-system Australian Maritime Safety Authority], broadcasting its signal on the longwave band; the other is used for land surveys and land navigation, and has corrections broadcast on the Commercial FM radio band.<ref>[[Wikipedia:DGPS\|DGNSS in Wikipedia]]</ref>

	There are other DGNSS techniques used by high-precision navigation/surveying applications, based on the use of carrier phase measurements. These are the cases of the [[Real Time Kinematics\|Real Time Kinematics (RTK)]] and the [[Wide Area RTK (WARTK)\|Wide Area RTK (WARTK)]].		There are other DGNSS techniques used by high-precision navigation/surveying applications, based on the use of carrier phase measurements. These are the cases of the [[Real Time Kinematics\|Real Time Kinematics (RTK)]] and the [[Wide Area RTK (WARTK)\|Wide Area RTK (WARTK)]].

← Older revision		Revision as of 10:02, 28 June 2011
Line 9:		Line 9:

	Differential GNSS (DGNSS) is a kind of [[GNSS Augmentation]] system based on an enhancement to primary GNSS constellation(s) information by the use of a network of ground-based reference stations which enable the broadcasting of differential information to the user – also named rover – to improve the accuracy of his position – the integrity is not assured.		Differential GNSS (DGNSS) is a kind of [[GNSS Augmentation]] system based on an enhancement to primary GNSS constellation(s) information by the use of a network of ground-based reference stations which enable the broadcasting of differential information to the user – also named rover – to improve the accuracy of his position – the integrity is not assured.
	There are several DGNSS techniques, such as the [[DGNSS Fundamentals\|classical DGNSS]] (or DGPS), the [[Real Time Kinematics\|Real Time Kinematics (RTK)]] and the [[Wide Area RTK (WARTK)\|Wide Area RTK (WARTK)]].		There are several DGNSS techniques, such as the [[Work in Progress:DGNSS Fundamentals\|classical DGNSS]] (or DGPS), the [[Work in Progress:Real Time Kinematics\|Real Time Kinematics (RTK)]] and the [[Work in Progress:Wide Area RTK (WARTK)\|Wide Area RTK (WARTK)]].

	==Differential GNSS==		==Differential GNSS==
Line 15:		Line 15:
	[[File:Claas_Baseline_HD.jpg\|Transportable DGNSS reference station\|thumb\|250px]]		[[File:Claas_Baseline_HD.jpg\|Transportable DGNSS reference station\|thumb\|250px]]

	The classical [[DGNSS Fundamentals\|DGNSS technique]] is an enhancement to a primary GNSS system that consists of the determination of the GNSS position for an accurately-surveyed position known as reference station. Given that the position of the reference station is accurately known, the deviation of the measured position to the actual position and more importantly the corrections to the measured pseudoranges to each of the individual satellites can be calculated. These corrections can thereby be used for the correction of the measured positions of other GNSS user receivers.		The classical [[Work in Progress:DGNSS Fundamentals\|DGNSS technique]] is an enhancement to a primary GNSS system that consists of the determination of the GNSS position for an accurately-surveyed position known as reference station. Given that the position of the reference station is accurately known, the deviation of the measured position to the actual position and more importantly the corrections to the measured pseudoranges to each of the individual satellites can be calculated. These corrections can thereby be used for the correction of the measured positions of other GNSS user receivers.

	When GPS is the only constellation used for the Differential GNSS technique, the system is called DGPS. DGPS accuracy is in the order of 1 m (1 sigma) for users in the range of few tens of km from the reference station, growing at the rate of 1 m per 150 km of separation.		When GPS is the only constellation used for the Differential GNSS technique, the system is called DGPS. DGPS accuracy is in the order of 1 m (1 sigma) for users in the range of few tens of km from the reference station, growing at the rate of 1 m per 150 km of separation.

	The DGNSS term can refer to specific implementations using DGNSS technique. It is often used to refer specifically to [[DGNSS Systems\|systems]] that re-broadcast the corrections from ground-based short-range transmitters. For instance, the [http://www.uscg.mil/ United States Coast Guard] and [http://www.ccg-gcc.gc.ca/ Canadian Coast Guard] run one such system in the US and Canada on the longwave radio frequencies between 285 kHz and 325 kHz. These frequencies are commonly used for marine radio, and are broadcast near major waterways and harbors. Australia runs two DGPS systems: one is mainly for marine navigation, run by [http://www.amsa.gov.au/Shipping_Safety/Navigation_Safety/Differential_Global_Postitioning_System/Service_Status/index.asp Australian Maritime Safety Authority], broadcasting its signal on the longwave band; the other is used for land surveys and land navigation, and has corrections broadcast on the Commercial FM radio band.<ref>[[Wikipedia:DGPS\|DGNSS in Wikipedia]]</ref>		The DGNSS term can refer to specific implementations using DGNSS technique. It is often used to refer specifically to [[Work in Progress:DGNSS Systems\|systems]] that re-broadcast the corrections from ground-based short-range transmitters. For instance, the [http://www.uscg.mil/ United States Coast Guard] and [http://www.ccg-gcc.gc.ca/ Canadian Coast Guard] run one such system in the US and Canada on the longwave radio frequencies between 285 kHz and 325 kHz. These frequencies are commonly used for marine radio, and are broadcast near major waterways and harbors. Australia runs two DGPS systems: one is mainly for marine navigation, run by [http://www.amsa.gov.au/Shipping_Safety/Navigation_Safety/Differential_Global_Postitioning_System/Service_Status/index.asp Australian Maritime Safety Authority], broadcasting its signal on the longwave band; the other is used for land surveys and land navigation, and has corrections broadcast on the Commercial FM radio band.<ref>[[Wikipedia:DGPS\|DGNSS in Wikipedia]]</ref>

	There are other DGNSS techniques used by high-precision navigation/surveying applications, based on the use of carrier phase measurements. These are the cases of the [[Real Time Kinematics\|Real Time Kinematics (RTK)]] and the [[Wide Area RTK (WARTK)\|Wide Area RTK (WARTK)]].		There are other DGNSS techniques used by high-precision navigation/surveying applications, based on the use of carrier phase measurements. These are the cases of the [[Work in Progress:Real Time Kinematics\|Real Time Kinematics (RTK)]] and the [[Work in Progress:Wide Area RTK (WARTK)\|Wide Area RTK (WARTK)]].

	==DGNSS Related Articles==		==DGNSS Related Articles==

	The following articles include further information about different important topics related to a Differential GNSS:		The following articles include further information about different important topics related to a Differential GNSS:
	* [[DGNSS Fundamentals\|DGNSS Fundamentals]] introduces the classical DGNSS technique, its functionalities and the objectives of a DGNSS system.		* [[Work in Progress:DGNSS Fundamentals\|DGNSS Fundamentals]] introduces the classical DGNSS technique, its functionalities and the objectives of a DGNSS system.

	* The [[DGNSS Standards\|DGNSS Standards]] article summarizes the international bodies in charge of the standardization of DGNSS systems, the principle applicable documents and its current status.		* The [[Work in Progress:DGNSS Standards\|DGNSS Standards]] article summarizes the international bodies in charge of the standardization of DGNSS systems, the principle applicable documents and its current status.

	* [[DGNSS Systems\|DGNSS Systems]] sections provide a brief overview of the current existing DGNSS systems.		* [[Work in Progress:DGNSS Systems\|DGNSS Systems]] sections provide a brief overview of the current existing DGNSS systems.

	==Notes==		==Notes==

← Older revision		Revision as of 15:14, 27 June 2011
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	Differential GNSS (DGNSS) is a kind of [[GNSS Augmentation]] system based on an enhancement to primary GNSS constellation(s) information by the use of a network of ground-based reference stations which enable the broadcasting of differential information to the user – also named rover – to improve the accuracy of his position – the integrity is not assured.		Differential GNSS (DGNSS) is a kind of [[GNSS Augmentation]] system based on an enhancement to primary GNSS constellation(s) information by the use of a network of ground-based reference stations which enable the broadcasting of differential information to the user – also named rover – to improve the accuracy of his position – the integrity is not assured.
	There are several DGNSS techniques, such as the [[DGNSS Fundamentals\|classical DGNSS]] (or DGPS), the [[~~Work in Progress:~~Real Time Kinematics\|Real Time Kinematics (RTK)]] and the [[~~Work in Progress:~~Wide Area RTK(WARTK)\|Wide Area RTK (WARTK)]].		There are several DGNSS techniques, such as the [[DGNSS Fundamentals\|classical DGNSS]] (or DGPS), the [[Real Time Kinematics\|Real Time Kinematics (RTK)]] and the [[Wide Area RTK (WARTK)\|Wide Area RTK (WARTK)]].

	==Differential GNSS==		==Differential GNSS==
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	[[File:Claas_Baseline_HD.jpg\|Transportable DGNSS reference station\|thumb\|250px]]		[[File:Claas_Baseline_HD.jpg\|Transportable DGNSS reference station\|thumb\|250px]]

	The classical [[~~Work in Progress:~~DGNSS Fundamentals\|DGNSS technique]] is an enhancement to a primary GNSS system that consists of the determination of the GNSS position for an accurately-surveyed position known as reference station. Given that the position of the reference station is accurately known, the deviation of the measured position to the actual position and more importantly the corrections to the measured pseudoranges to each of the individual satellites can be calculated. These corrections can thereby be used for the correction of the measured positions of other GNSS user receivers.		The classical [[DGNSS Fundamentals\|DGNSS technique]] is an enhancement to a primary GNSS system that consists of the determination of the GNSS position for an accurately-surveyed position known as reference station. Given that the position of the reference station is accurately known, the deviation of the measured position to the actual position and more importantly the corrections to the measured pseudoranges to each of the individual satellites can be calculated. These corrections can thereby be used for the correction of the measured positions of other GNSS user receivers.

	When GPS is the only constellation used for the Differential GNSS technique, the system is called DGPS. DGPS accuracy is in the order of 1 m (1 sigma) for users in the range of few tens of km from the reference station, growing at the rate of 1 m per 150 km of separation.		When GPS is the only constellation used for the Differential GNSS technique, the system is called DGPS. DGPS accuracy is in the order of 1 m (1 sigma) for users in the range of few tens of km from the reference station, growing at the rate of 1 m per 150 km of separation.

	The DGNSS term can refer to specific implementations using DGNSS technique. It is often used to refer specifically to [[~~Work in Progress:~~DGNSS Systems\|systems]] that re-broadcast the corrections from ground-based short-range transmitters. For instance, the [http://www.uscg.mil/ United States Coast Guard] and [http://www.ccg-gcc.gc.ca/ Canadian Coast Guard] run one such system in the US and Canada on the longwave radio frequencies between 285 kHz and 325 kHz. These frequencies are commonly used for marine radio, and are broadcast near major waterways and harbors. Australia runs two DGPS systems: one is mainly for marine navigation, run by [http://www.amsa.gov.au/Shipping_Safety/Navigation_Safety/Differential_Global_Postitioning_System/Service_Status/index.asp Australian Maritime Safety Authority], broadcasting its signal on the longwave band; the other is used for land surveys and land navigation, and has corrections broadcast on the Commercial FM radio band.<ref>[[Wikipedia:DGPS\|DGNSS in Wikipedia]]</ref>		The DGNSS term can refer to specific implementations using DGNSS technique. It is often used to refer specifically to [[DGNSS Systems\|systems]] that re-broadcast the corrections from ground-based short-range transmitters. For instance, the [http://www.uscg.mil/ United States Coast Guard] and [http://www.ccg-gcc.gc.ca/ Canadian Coast Guard] run one such system in the US and Canada on the longwave radio frequencies between 285 kHz and 325 kHz. These frequencies are commonly used for marine radio, and are broadcast near major waterways and harbors. Australia runs two DGPS systems: one is mainly for marine navigation, run by [http://www.amsa.gov.au/Shipping_Safety/Navigation_Safety/Differential_Global_Postitioning_System/Service_Status/index.asp Australian Maritime Safety Authority], broadcasting its signal on the longwave band; the other is used for land surveys and land navigation, and has corrections broadcast on the Commercial FM radio band.<ref>[[Wikipedia:DGPS\|DGNSS in Wikipedia]]</ref>

	There are other DGNSS techniques used by high-precision navigation/surveying applications, based on the use of carrier phase measurements. These are the cases of the [[~~Work in Progress:~~Real Time Kinematics\|Real Time Kinematics (RTK)]] and the [[Wide Area RTK\|Wide Area RTK (WARTK)]].		There are other DGNSS techniques used by high-precision navigation/surveying applications, based on the use of carrier phase measurements. These are the cases of the [[Real Time Kinematics\|Real Time Kinematics (RTK)]] and the [[Wide Area RTK (WARTK)\|Wide Area RTK (WARTK)]].

	==DGNSS Related Articles==		==DGNSS Related Articles==

	The following articles include further information about different important topics related to a Differential GNSS:		The following articles include further information about different important topics related to a Differential GNSS:
	* [[~~Work in Progress:~~DGNSS Fundamentals\|DGNSS Fundamentals]] introduces the classical DGNSS technique, its functionalities and the objectives of a DGNSS system.		* [[DGNSS Fundamentals\|DGNSS Fundamentals]] introduces the classical DGNSS technique, its functionalities and the objectives of a DGNSS system.

	* The [[~~Work in Progress:~~DGNSS Standards\|DGNSS Standards]] article summarizes the international bodies in charge of the standardization of DGNSS systems, the principle applicable documents and its current status.		* The [[DGNSS Standards\|DGNSS Standards]] article summarizes the international bodies in charge of the standardization of DGNSS systems, the principle applicable documents and its current status.

	* [[~~Work in Progress:~~DGNSS Systems\|DGNSS Systems]] sections provide a brief overview of the current existing DGNSS systems.		* [[DGNSS Systems\|DGNSS Systems]] sections provide a brief overview of the current existing DGNSS systems.

	==Notes==		==Notes==