GNSS signal - Revision history

Filipe.Pelica: /* Introduction */

2014-05-30T10:14:15Z

Introduction

← Older revision		Revision as of 10:14, 30 May 2014
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	*'' Navigation data'': A binary-coded message providing information on the satellite ephemeris (Keplerian elements or satellite position and velocity), clock bias parameters, almanac (with a reduced accuracy ephemeris data set), satellite health status, and other complementary information.		*'' Navigation data'': A binary-coded message providing information on the satellite ephemeris (Keplerian elements or satellite position and velocity), clock bias parameters, almanac (with a reduced accuracy ephemeris data set), satellite health status, and other complementary information.


			As an example, the main components of GPS L1 C/A signal are represented on figure 1.
			::[[File:GPS Signals.png\|none\|thumb\|520px\|alt=GPS L1 C/A signal \|'''''Figure 1''''': Main components of GPS L1 C/A signal.]]


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	ITU has been working in the allocation of the radio-frequency bands used by the Radio Navigation Satellite Services (RNSS) where GNSS belongs to. Allocation agreements were output from the World Radio Communication Conferences in 2000 and 2003.		ITU has been working in the allocation of the radio-frequency bands used by the Radio Navigation Satellite Services (RNSS) where GNSS belongs to. Allocation agreements were output from the World Radio Communication Conferences in 2000 and 2003.

	::[[File:GNSS navigational frequency bands.png\|none\|thumb\|520px\|alt=GNSS navigational frequency bands\|'''''Figure 1''''': GPS, GLONASS and Galileo navigational frequency bands.]]		::[[File:GNSS navigational frequency bands.png\|none\|thumb\|520px\|alt=GNSS navigational frequency bands\|'''''Figure 2''''': GPS, GLONASS and Galileo navigational frequency bands.]]


	Figure 1 shows the frequency bands for the Radio Navigation Satellite System (RNSS). There are two bands in the region allocated to the Aeronautical Radio Navigation Service (ARNS) on a primary basis worldwide. These bands are especially suitable for Safety-of-Life applications because no other users are allowed to interfere with their signals. They correspond to the upper L band (1 559 - 1 610 MHz), having the GPS L1, Galileo E1 and GLONASS G1, and to the bottom of the Lower Band-L (1 151 - 1 214 MHz) where GPS L5 and Galileo E5 are located, with E5a and L5 coexisting in the same frequencies. The remaining GPS L2, GLONASS G2 and Galileo E6 signals are in the bands 1 215.6 - 1 350 MHz. These bands were allocated to Radio-location Services (ground radars) and RNSS on a primary basis, thence the signals in these bands are more vulnerable to interference than the previous ones.

			Figure 2 shows the frequency bands for the Radio Navigation Satellite System (RNSS). There are two bands in the region allocated to the Aeronautical Radio Navigation Service (ARNS) on a primary basis worldwide. These bands are especially suitable for Safety-of-Life applications because no other users are allowed to interfere with their signals. They correspond to the upper L band (1 559 - 1 610 MHz), having the GPS L1, Galileo E1 and GLONASS G1, and to the bottom of the Lower Band-L (1 151 - 1 214 MHz) where GPS L5 and Galileo E5 are located, with E5a and L5 coexisting in the same frequencies. The remaining GPS L2, GLONASS G2 and Galileo E6 signals are in the bands 1 215.6 - 1 350 MHz. These bands were allocated to Radio-location Services (ground radars) and RNSS on a primary basis, thence the signals in these bands are more vulnerable to interference than the previous ones.

	~~Figure 2 shows the frequency bands used by the different GNSS systems~~

	~~::[[File:GNSS_All_Signals.png\|none\|thumb\|520px\|alt=GNSS~~ frequency bands~~\|'''''Figure 2''''':~~ GNSS ~~frequency bands. (Source: Stefan Wallner)]]~~		Figure 3 shows the frequency bands used by the different GNSS systems

			::[[File:GNSS_All_Signals.png\|none\|thumb\|520px\|alt=GNSS frequency bands\|'''''Figure 3''''': GNSS frequency bands. (Source: Stefan Wallner)]]

	==Related articles==		==Related articles==

Carlos.Lopez at 13:38, 27 October 2011

2011-10-27T13:38:10Z

← Older revision		Revision as of 13:38, 27 October 2011
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	Figure 2 shows the frequency bands used by the different GNSS systems		Figure 2 shows the frequency bands used by the different GNSS systems

	::[[File:GNSS_All_Signals.png\|none\|thumb\|520px\|alt=GNSS frequency bands\|'''''Figure 2''''': GNSS frequency bands.]]		::[[File:GNSS_All_Signals.png\|none\|thumb\|520px\|alt=GNSS frequency bands\|'''''Figure 2''''': GNSS frequency bands. (Source: Stefan Wallner)]]

Carlos.Lopez at 13:18, 27 October 2011

2011-10-27T13:18:12Z

← Older revision		Revision as of 13:18, 27 October 2011
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	==Related articles==		==Related articles==
	For further information on the the GPS, GLONASS and Galileo signals, please visit the following links:		For further information on the the GPS, GLONASS and Galileo signals, please visit the following links:
	* [[GPS ~~signal description~~]]		* [[GPS Signal Plan]]
	* [[GLONASS ~~signal description~~]]		* [[GLONASS Signal Plan]]
	* [[~~Galileo signal description~~]]		* [[GALILEO Signal Plan]]


	[[Category:Fundamentals]]		[[Category:Fundamentals]]

Carlos.Lopez at 10:13, 23 August 2011

2011-08-23T10:13:50Z

← Older revision		Revision as of 10:13, 23 August 2011
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	Figure 1 shows the frequency bands for the Radio Navigation Satellite System (RNSS). There are two bands in the region allocated to the Aeronautical Radio Navigation Service (ARNS) on a primary basis worldwide. These bands are especially suitable for Safety-of-Life applications because no other users are allowed to interfere with their signals. They correspond to the upper L band (1 559 - 1 610 MHz), having the GPS L1, Galileo E1 and GLONASS G1, and to the bottom of the Lower Band-L (1 151 - 1 214 MHz) where GPS L5 and Galileo E5 are located, with E5a and L5 coexisting in the same frequencies. The remaining GPS L2, GLONASS G2 and Galileo E6 signals are in the bands 1 215.6 - 1 350 MHz. These bands were allocated to Radio-location Services (ground radars) and RNSS on a primary basis, thence the signals in these bands are more vulnerable to interference than the previous ones.		Figure 1 shows the frequency bands for the Radio Navigation Satellite System (RNSS). There are two bands in the region allocated to the Aeronautical Radio Navigation Service (ARNS) on a primary basis worldwide. These bands are especially suitable for Safety-of-Life applications because no other users are allowed to interfere with their signals. They correspond to the upper L band (1 559 - 1 610 MHz), having the GPS L1, Galileo E1 and GLONASS G1, and to the bottom of the Lower Band-L (1 151 - 1 214 MHz) where GPS L5 and Galileo E5 are located, with E5a and L5 coexisting in the same frequencies. The remaining GPS L2, GLONASS G2 and Galileo E6 signals are in the bands 1 215.6 - 1 350 MHz. These bands were allocated to Radio-location Services (ground radars) and RNSS on a primary basis, thence the signals in these bands are more vulnerable to interference than the previous ones.


			Figure 2 shows the frequency bands used by the different GNSS systems

			::[[File:GNSS_All_Signals.png\|none\|thumb\|520px\|alt=GNSS frequency bands\|'''''Figure 2''''': GNSS frequency bands.]]


	==Related articles==		==Related articles==

Carlos.Lopez: /* Introduction */

2011-08-23T09:58:00Z

Introduction

← Older revision		Revision as of 09:58, 23 August 2011
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	'''Frequencies allocation''': The allocation of frequency bands is a complex process because multiple services and users can coexist in the same range. That is, the same frequencies can be allocated for different purposes in different countries. The International Telecommunications Union (ITU) is a United Nations agency coordinating the shared global use of the radio spectrum. It involves, for instance, television, radio, cell-phone, radar satellite broadcasting, etc., and even microwave ovens.		'''Frequencies allocation''': The allocation of frequency bands is a complex process because multiple services and users can coexist in the same range. That is, the same frequencies can be allocated for different purposes in different countries. The International Telecommunications Union (ITU) is a United Nations agency coordinating the shared global use of the radio spectrum. It involves, for instance, television, radio, cell-phone, radar satellite broadcasting, etc., and even microwave ovens.
	ITU has been working ~~to define an~~ allocation ~~plan for the different GNSS signals in~~ the radio ~~spectrum~~ bands. Allocation agreements were output from the World Radio Communication Conferences in 2000 and 2003.		ITU has been working in the allocation of the radio-frequency bands used by the Radio Navigation Satellite Services (RNSS) where GNSS belongs to. Allocation agreements were output from the World Radio Communication Conferences in 2000 and 2003.

	::[[File:GNSS navigational frequency bands.png\|none\|thumb\|520px\|alt=GNSS navigational frequency bands\|'''''Figure 1''''': GPS, GLONASS and Galileo navigational frequency bands.]]		::[[File:GNSS navigational frequency bands.png\|none\|thumb\|520px\|alt=GNSS navigational frequency bands\|'''''Figure 1''''': GPS, GLONASS and Galileo navigational frequency bands.]]


	Figure 1 shows the frequency bands for the ~~Radionavigation~~ Satellite System (RNSS). There are two bands in the region allocated to the Aeronautical Radio 1 Navigation Service (ARNS) on a primary basis worldwide. These bands are especially suitable for Safety-of-Life applications because no other users are allowed to interfere with their signals. They correspond to the upper L band (1 559 - 1 610 MHz), having the GPS L1, Galileo E1 and GLONASS G1, and to the bottom of the Lower Band-L (1 151 - 1 214 MHz) where GPS L5 and Galileo E5 are located, with E5a and L5 coexisting in the same frequencies. The remaining GPS L2, GLONASS G2 and Galileo E6 signals are in the bands 1 215.6 - 1 350 MHz. These bands were allocated to Radio-location Services (ground radars) and RNSS on a primary basis, thence the signals in these bands are more vulnerable to interference than the previous ones.		Figure 1 shows the frequency bands for the Radio Navigation Satellite System (RNSS). There are two bands in the region allocated to the Aeronautical Radio Navigation Service (ARNS) on a primary basis worldwide. These bands are especially suitable for Safety-of-Life applications because no other users are allowed to interfere with their signals. They correspond to the upper L band (1 559 - 1 610 MHz), having the GPS L1, Galileo E1 and GLONASS G1, and to the bottom of the Lower Band-L (1 151 - 1 214 MHz) where GPS L5 and Galileo E5 are located, with E5a and L5 coexisting in the same frequencies. The remaining GPS L2, GLONASS G2 and Galileo E6 signals are in the bands 1 215.6 - 1 350 MHz. These bands were allocated to Radio-location Services (ground radars) and RNSS on a primary basis, thence the signals in these bands are more vulnerable to interference than the previous ones.


	==Related articles==		==Related articles==

Carlos.Lopez at 09:32, 9 August 2011

2011-08-09T09:32:07Z

← Older revision		Revision as of 09:32, 9 August 2011
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	* ''Carrier'': Radio frequency sinusoidal signal at a given frequency.		* ''Carrier'': Radio frequency sinusoidal signal at a given frequency.

	* ''Ranging code'': Sequences of 0s and 1s (zeroes and ones), which allow the receiver to determine the travel time of radio signal from satellite to receiver. They are called Pseudo-Random Noise (PRN) ~~aequences~~ or PRN codes.		* ''Ranging code'': Sequences of 0s and 1s (zeroes and ones), which allow the receiver to determine the travel time of radio signal from satellite to receiver. They are called Pseudo-Random Noise (PRN) sequences or PRN codes.

	*'' Navigation data'': A binary-coded message providing information on the satellite ephemeris (Keplerian elements or satellite position and velocity), clock bias parameters, almanac (with a reduced accuracy ephemeris data set), satellite health status, and other complementary information.		*'' Navigation data'': A binary-coded message providing information on the satellite ephemeris (Keplerian elements or satellite position and velocity), clock bias parameters, almanac (with a reduced accuracy ephemeris data set), satellite health status, and other complementary information.

Carlos.Lopez at 09:31, 9 August 2011

2011-08-09T09:31:09Z

← Older revision		Revision as of 09:31, 9 August 2011
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	'''Frequencies allocation''': The allocation of frequency bands is a complex process because multiple services and users can coexist in the same range. That is, the same frequencies can be allocated for different purposes in different countries. The International Telecommunications Union (ITU) is a United Nations agency coordinating the shared global use of the radio spectrum. It involves, for instance, television, radio, cell-phone, radar satellite broadcasting, etc., and even microwave ovens.		'''Frequencies allocation''': The allocation of frequency bands is a complex process because multiple services and users can coexist in the same range. That is, the same frequencies can be allocated for different purposes in different countries. The International Telecommunications Union (ITU) is a United Nations agency coordinating the shared global use of the radio spectrum. It involves, for instance, television, radio, cell-phone, radar satellite broadcasting, etc., and even microwave ovens.
	ITU has ~~being~~ working to define an allocation plan for the different GNSS signals in the radio spectrum bands. Allocation agreements were output from the World Radio Communication Conferences in 2000 and 2003.		ITU has been working to define an allocation plan for the different GNSS signals in the radio spectrum bands. Allocation agreements were output from the World Radio Communication Conferences in 2000 and 2003.

	::[[File:GNSS navigational frequency bands.png\|none\|thumb\|520px\|alt=GNSS navigational frequency bands\|'''''Figure 1''''': GPS, GLONASS and Galileo navigational frequency bands.]]		::[[File:GNSS navigational frequency bands.png\|none\|thumb\|520px\|alt=GNSS navigational frequency bands\|'''''Figure 1''''': GPS, GLONASS and Galileo navigational frequency bands.]]

Carlos.Lopez at 13:45, 8 August 2011

2011-08-08T13:45:37Z

← Older revision		Revision as of 13:45, 8 August 2011
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	==Introduction==		==Introduction==
	The GNSS satellites continuously transmit navigation signals in two or more frequencies in L band. These signals contain ranging codes and navigation data to allow the users to compute the travelling time from satellite to receiver and the satellite coordinates at any epoch. The main signal components are described as follows:		The GNSS satellites continuously transmit navigation signals in two or more frequencies in L band. These signals contain ranging codes and navigation data to allow the users to compute the travelling time from satellite to receiver and the satellite coordinates at any epoch. The main signal components are described as follows:
	* Carrier: Radio frequency sinusoidal signal at a given frequency.
	* Ranging code: Sequences of 0s and 1s (zeroes and ones), which allow the receiver to determine the travel time of radio signal from satellite to receiver. They are called Pseudo-Random Noise (PRN) aequences or PRN codes.
	* Navigation data: A binary-coded message providing information on the satellite ephemeris (Keplerian elements or satellite position and velocity), clock bias parameters, almanac (with a reduced accuracy ephemeris data set), satellite health status, and other complementary information.

	Frequencies allocation The allocation of frequency bands is a complex process because multiple services and users can coexist in the same range. That is, the same frequencies can be allocated for different purposes in different countries. The International Telecommunications Union (ITU) is a United Nations agency coordinating the shared global use of the radio spectrum. It involves, for instance, television, radio, cell-phone, radar satellite broadcasting, etc., and even microwave ovens.		* ''Carrier'': Radio frequency sinusoidal signal at a given frequency.

			* ''Ranging code'': Sequences of 0s and 1s (zeroes and ones), which allow the receiver to determine the travel time of radio signal from satellite to receiver. They are called Pseudo-Random Noise (PRN) aequences or PRN codes.

			*'' Navigation data'': A binary-coded message providing information on the satellite ephemeris (Keplerian elements or satellite position and velocity), clock bias parameters, almanac (with a reduced accuracy ephemeris data set), satellite health status, and other complementary information.


			'''Frequencies allocation''': The allocation of frequency bands is a complex process because multiple services and users can coexist in the same range. That is, the same frequencies can be allocated for different purposes in different countries. The International Telecommunications Union (ITU) is a United Nations agency coordinating the shared global use of the radio spectrum. It involves, for instance, television, radio, cell-phone, radar satellite broadcasting, etc., and even microwave ovens.
	ITU has being working to define an allocation plan for the different GNSS signals in the radio spectrum bands. Allocation agreements were output from the World Radio Communication Conferences in 2000 and 2003.		ITU has being working to define an allocation plan for the different GNSS signals in the radio spectrum bands. Allocation agreements were output from the World Radio Communication Conferences in 2000 and 2003.
	~~[[File:GNSS navigational frequency bands.png\|none\|thumb\|400px\|alt=GNSS navigational frequency bands\|'''''Figure 1''''': GPS, GLONASS and Galileo navigational frequency bands.]]~~

	Figure 1 shows the frequency bands for the Radionavigation Satellite System (RNSS). There are two bands in the region allocated to the Aeronautical Radio 1 Navigation Service (ARNS) on a primary basis worldwide. These bands are especially suitable for Safety-of-Life applications because no other users are allowed to interfere with their signals. They correspond to the upper L band (1 559 - 1 610 MHz), having the GPS L1, Galileo E1 and GLONASS G1, and to the bottom of the Lower Band-L (1 151 - 1 214 MHz) where GPS L5 and Galileo E5 are located, with E5a and L5 coexisting in the same frequencies.		::[[File:GNSS navigational frequency bands.png\|none\|thumb\|520px\|alt=GNSS navigational frequency bands\|'''''Figure 1''''': GPS, GLONASS and Galileo navigational frequency bands.]]
	The remaining GPS L2, GLONASS G2 and Galileo E6 signals are in the bands 1 215.6 - 1 350 MHz. These bands were allocated to Radio-location Services (ground radars) and RNSS on a primary basis, thence the signals in these bands are more vulnerable to interference than the previous ones.

			Figure 1 shows the frequency bands for the Radionavigation Satellite System (RNSS). There are two bands in the region allocated to the Aeronautical Radio 1 Navigation Service (ARNS) on a primary basis worldwide. These bands are especially suitable for Safety-of-Life applications because no other users are allowed to interfere with their signals. They correspond to the upper L band (1 559 - 1 610 MHz), having the GPS L1, Galileo E1 and GLONASS G1, and to the bottom of the Lower Band-L (1 151 - 1 214 MHz) where GPS L5 and Galileo E5 are located, with E5a and L5 coexisting in the same frequencies. The remaining GPS L2, GLONASS G2 and Galileo E6 signals are in the bands 1 215.6 - 1 350 MHz. These bands were allocated to Radio-location Services (ground radars) and RNSS on a primary basis, thence the signals in these bands are more vulnerable to interference than the previous ones.


	==Related articles==		==Related articles==

Timo.Kouwenhoven at 17:54, 20 January 2011

2011-01-20T17:54:14Z

← Older revision		Revision as of 17:54, 20 January 2011
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	\|YearOfPublication=2011		\|YearOfPublication=2011
	}}		}}
			==Introduction==
	The GNSS satellites continuously transmit navigation signals in two or more frequencies in L band. These signals contain ranging codes and navigation data to allow the users to compute the travelling time from satellite to receiver and the satellite coordinates at any epoch. The main signal components are described as follows:		The GNSS satellites continuously transmit navigation signals in two or more frequencies in L band. These signals contain ranging codes and navigation data to allow the users to compute the travelling time from satellite to receiver and the satellite coordinates at any epoch. The main signal components are described as follows:
	* Carrier: Radio frequency sinusoidal signal at a given frequency.		* Carrier: Radio frequency sinusoidal signal at a given frequency.

Timo.Kouwenhoven at 11:36, 19 January 2011

2011-01-19T11:36:55Z

← Older revision		Revision as of 11:36, 19 January 2011
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	[[File:GNSS navigational frequency bands.png\|none\|thumb\|400px\|alt=GNSS navigational frequency bands\|'''''Figure 1''''': GPS, GLONASS and Galileo navigational frequency bands.]]		[[File:GNSS navigational frequency bands.png\|none\|thumb\|400px\|alt=GNSS navigational frequency bands\|'''''Figure 1''''': GPS, GLONASS and Galileo navigational frequency bands.]]

	Figure 1 shows the frequency bands for the Radionavigation Satellite System (RNSS). There are two bands in the region allocated to the Aeronautical Radio 1 Navigation Service (ARNS) on a primary basis worldwide. These bands are especially suitable for Safety-of-Life applications because no other users are allowed to interfere with their signals. They correspond to the upper L band (1 559 􀀀 1 610 MHz), having the GPS L1, Galileo E1 and GLONASS G1, and to the bottom of the Lower Band-L (1 151 􀀀 1 214 MHz) where GPS L5 and Galileo E5 are located, with E5a and L5 coexisting in the same frequencies.		Figure 1 shows the frequency bands for the Radionavigation Satellite System (RNSS). There are two bands in the region allocated to the Aeronautical Radio 1 Navigation Service (ARNS) on a primary basis worldwide. These bands are especially suitable for Safety-of-Life applications because no other users are allowed to interfere with their signals. They correspond to the upper L band (1 559 - 1 610 MHz), having the GPS L1, Galileo E1 and GLONASS G1, and to the bottom of the Lower Band-L (1 151 - 1 214 MHz) where GPS L5 and Galileo E5 are located, with E5a and L5 coexisting in the same frequencies.
	The remaining GPS L2, GLONASS G2 and Galileo E6 signals are in the bands 1 215:6 􀀀 1 350 MHz. These bands were allocated to Radio-location Services (ground radars) and RNSS on a primary basis, thence the signals in these bands are more vulnerable to interference than the previous ones.		The remaining GPS L2, GLONASS G2 and Galileo E6 signals are in the bands 1 215.6 - 1 350 MHz. These bands were allocated to Radio-location Services (ground radars) and RNSS on a primary basis, thence the signals in these bands are more vulnerable to interference than the previous ones.

	==Related articles==		==Related articles==