IRNSS Signal Plan - Revision history

Gema.Cueto at 14:52, 13 April 2026

2026-04-13T14:52:43Z

← Older revision		Revision as of 14:52, 13 April 2026
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	In April 2016, with the last launch of the constellation's satellite, IRNSS was renamed Navigation Indian Constellation (NAVIC) by India’s Prime Minister Narendra Modi.<ref> [http://gpsworld.com/with-irnss-1g-launch-india-completes-and-renames-its-navigation-constellation/ With IRNSS-1G launch, India completes and renames its navigation constellation]</ref>		In April 2016, with the last launch of the constellation's satellite, IRNSS was renamed Navigation Indian Constellation (NAVIC) by India’s Prime Minister Narendra Modi.<ref> [http://gpsworld.com/with-irnss-1g-launch-india-completes-and-renames-its-navigation-constellation/ With IRNSS-1G launch, India completes and renames its navigation constellation]</ref>

	The messaging service signals from the Indian Regional Navigation Satellite System (IRNSS) are broadcast in L5 and S band frequencies. The carrier frequency and the bandwidth of transmission for the messaging service are:<ref name="IRNSS ICD">[https://www.isro.gov.in/~~sites/default/files/article-files/irnss-programme/sis_icd_irnss1a_incois_isro_v1.1_19jul2019~~.~~pdf~~ IRNSS Signal-In-Space ICD ~~v1.1~~]</ref>		The messaging service signals from the Indian Regional Navigation Satellite System (IRNSS) are broadcast in L5 and S band frequencies. The carrier frequency and the bandwidth of transmission for the messaging service are:<ref name="IRNSS ICD">[https://www.isro.gov.in/IRNSSSignal.html IRNSS Signal-In-Space ICD]</ref>

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Gema.Cueto at 05:57, 12 July 2024

2024-07-12T05:57:52Z

← Older revision		Revision as of 05:57, 12 July 2024
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	\|- align="center"		\|- align="center"
	\| S		\| S
	\| 2492.~~028MHz~~		\| 2492.028 MHz
	\| 16.5 MHz (2483.778 - 2500.278 MHz)		\| 16.5 MHz (2483.778 - 2500.278 MHz)
			\|- align="center"
			\| L1
			\| 1575,42 MHz
			\| 24 MHz (1551,42 - 1599,42 MHz)
	\|}		\|}

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	::::[[File: IRNSS_Sband.png\|none\|thumb\|280px\|'''''Figure 2:''''' Spectrum for IRNSS Signal in S Band.<ref name="IRNSS ICD"/>]]		::::[[File: IRNSS_Sband.png\|none\|thumb\|280px\|'''''Figure 2:''''' Spectrum for IRNSS Signal in S Band.<ref name="IRNSS ICD"/>]]

	Given the similarity with the Galileo signals in terms of services that IRNSS might be providing, the same convention as for Galileo was employed. That is A for the PRS and B and C for the Open Service data and pilot signals respectively. ~~Furthermore, the spectral properties of the IRNSS signal would be as follows:~~		Given the similarity with the Galileo signals in terms of services that IRNSS might be providing, the same convention as for Galileo was employed. That is A for the PRS and B and C for the Open Service data and pilot signals respectively.

	~~::::[[File: QZSS_Sig_Plan_Fig_1~~.~~png\|none\|thumb\|580px\|'''''Figure 3:''''' Spectra~~ of IRNSS ~~Signals~~ in the ~~E5b band~~.]]		Moreover, India also transmits similar signals for the S-band to those we have just described for the L5 band. The carrier frequency of S-band is at 2491.75 MHz. The modulation schemes and data rates are the same as for L5 (BPSK(1) and BOC(5,2)). In addition, India has started to transmit signals in L1 as it was announced during the second Meeting of the ICG in India, in 2007. Two L1 signals are also added on the last IRNSS satellites: one L1 MBOC and a BPSK(n) shifted from 18.414 MHz above L1. They are compatible with other L1, L5 and S GNSS Open signals. In addition, has introduced NeQuick-N model for Ionospheric delay modeling in L1-SPS signal, removing the need of having an additional SBAS channel only for Ionospheric corrections over Indian region for receiving the error correction values<ref>Update on NavIC Signal Monitoring Receiver and The Advantage of NavIC L1 SPS 2017, by Saumi S., Rohan S. Urdhwareshe, Saurabh Bhalla, Rakesh Kr. Bijarniya and Sagar Subudhi </ref>


	To conclude, it is interesting to mention that the Indian Satellite Navigation Programme has been doing much work in the past years on ionospheric and tropospheric modelling in the Region of India what could mean that IRNSS does not plan to use dual frequency at least in the first generation.

	Moreover, India also plans to transmit similar signals for the S-band to those we have just described for the L5 band. The carrier frequency of S-band is at 2491.75 MHz. The modulation schemes and data rates would be the same as for L5 but no final decision on the other parameters has been made yet. In addition, it seems that India also plans to transmit signals in L1 as announced during the second Meeting of the ICG in India, in 2007.

	~~As a summary of the studied regional satellite systems so far, the signal plan IRNSS is shown in the next figure<ref name="IRNSS ICD"/>:~~

	~~::::[[File: QZSS_Sig_Plan_Fig_4.png\|none\|thumb\|580px\|'''''Figure 1:''''' IRNSS planned signals.]]~~

	==References==		==References==
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	== Credits ==		== Credits ==
	The initial information presented in this NAVIPEDIA’s article was an extract of the PhD work performed by Dr. Jose Ángel Ávila Rodríguez in the FAF University of Munich as part of his Doctoral Thesis “On Generalized Signal Waveforms for Satellite Navigation” presented in June 2008, Munich (Germany)		The initial information presented in this NAVIPEDIA’s article was an extract of the PhD work performed by Dr. Jose Ángel Ávila Rodríguez in the FAF University of Munich as part of his Doctoral Thesis “On Generalized Signal Waveforms for Satellite Navigation” presented in June 2008, Munich (Germany)


	This article has been updated by GMV considering the information stated in the latest IRNSS Signal Interface Specification.		This article has been updated by GMV considering the information stated in the latest IRNSS Signal Interface Specification.

Gema.Cueto at 05:43, 22 April 2021

2021-04-22T05:43:16Z

← Older revision		Revision as of 05:43, 22 April 2021
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	Moreover, India also plans to transmit similar signals for the S-band to those we have just described for the L5 band. The carrier frequency of S-band is at 2491.75 MHz. The modulation schemes and data rates would be the same as for L5 but no final decision on the other parameters has been made yet. In addition, it seems that India also plans to transmit signals in L1 as announced during the second Meeting of the ICG in India, in 2007.		Moreover, India also plans to transmit similar signals for the S-band to those we have just described for the L5 band. The carrier frequency of S-band is at 2491.75 MHz. The modulation schemes and data rates would be the same as for L5 but no final decision on the other parameters has been made yet. In addition, it seems that India also plans to transmit signals in L1 as announced during the second Meeting of the ICG in India, in 2007.

	As a summary of the studied regional satellite systems so far, the signal plan IRNSS is shown in the next figure:		As a summary of the studied regional satellite systems so far, the signal plan IRNSS is shown in the next figure<ref name="IRNSS ICD"/>:

	::::[[File: QZSS_Sig_Plan_Fig_4.png\|none\|thumb\|580px\|'''''Figure 1:''''' IRNSS planned signals.]]		::::[[File: QZSS_Sig_Plan_Fig_4.png\|none\|thumb\|580px\|'''''Figure 1:''''' IRNSS planned signals.]]

Gema.Cueto: /* Credits */

2021-04-21T10:12:28Z

Credits

← Older revision		Revision as of 10:12, 21 April 2021
Line 54:		Line 54:
	The initial information presented in this NAVIPEDIA’s article was an extract of the PhD work performed by Dr. Jose Ángel Ávila Rodríguez in the FAF University of Munich as part of his Doctoral Thesis “On Generalized Signal Waveforms for Satellite Navigation” presented in June 2008, Munich (Germany)		The initial information presented in this NAVIPEDIA’s article was an extract of the PhD work performed by Dr. Jose Ángel Ávila Rodríguez in the FAF University of Munich as part of his Doctoral Thesis “On Generalized Signal Waveforms for Satellite Navigation” presented in June 2008, Munich (Germany)

	This article has been updated by GMV considering the information stated in the latest IRNSS Signal Interface Specification.~~<ref name="IRNSS ICD"/>~~		This article has been updated by GMV considering the information stated in the latest IRNSS Signal Interface Specification.

	[[Category:Fundamentals]]		[[Category:Fundamentals]]
	[[Category:GNSS Signals]]		[[Category:GNSS Signals]]
	[[Category:IRNSS]]		[[Category:IRNSS]]

Gema.Cueto at 10:12, 21 April 2021

2021-04-21T10:12:08Z

← Older revision		Revision as of 10:12, 21 April 2021
Line 54:		Line 54:
	The initial information presented in this NAVIPEDIA’s article was an extract of the PhD work performed by Dr. Jose Ángel Ávila Rodríguez in the FAF University of Munich as part of his Doctoral Thesis “On Generalized Signal Waveforms for Satellite Navigation” presented in June 2008, Munich (Germany)		The initial information presented in this NAVIPEDIA’s article was an extract of the PhD work performed by Dr. Jose Ángel Ávila Rodríguez in the FAF University of Munich as part of his Doctoral Thesis “On Generalized Signal Waveforms for Satellite Navigation” presented in June 2008, Munich (Germany)

	This article has been updated by GMV considering the information stated in the latest IRNSS Signal Interface Specification.<ref name="IRNSS ICD"~~>[https:~~/~~/www.isro.gov.in/sites/default/files/article-files/irnss-programme/sis_icd_irnss1a_incois_isro_v1.1_19jul2019.pdf IRNSS Signal-In-Space ICD v1.1]</ref~~>		This article has been updated by GMV considering the information stated in the latest IRNSS Signal Interface Specification.<ref name="IRNSS ICD"/>

	[[Category:Fundamentals]]		[[Category:Fundamentals]]
	[[Category:GNSS Signals]]		[[Category:GNSS Signals]]
	[[Category:IRNSS]]		[[Category:IRNSS]]

Gema.Cueto at 10:10, 21 April 2021

2021-04-21T10:10:49Z

← Older revision		Revision as of 10:10, 21 April 2021
Line 54:		Line 54:
	The initial information presented in this NAVIPEDIA’s article was an extract of the PhD work performed by Dr. Jose Ángel Ávila Rodríguez in the FAF University of Munich as part of his Doctoral Thesis “On Generalized Signal Waveforms for Satellite Navigation” presented in June 2008, Munich (Germany)		The initial information presented in this NAVIPEDIA’s article was an extract of the PhD work performed by Dr. Jose Ángel Ávila Rodríguez in the FAF University of Munich as part of his Doctoral Thesis “On Generalized Signal Waveforms for Satellite Navigation” presented in June 2008, Munich (Germany)

	This article has been updated by GMV considering the information stated in the latest IRNSS Signal Interface Specification.		This article has been updated by GMV considering the information stated in the latest IRNSS Signal Interface Specification.<ref name="IRNSS ICD">[https://www.isro.gov.in/sites/default/files/article-files/irnss-programme/sis_icd_irnss1a_incois_isro_v1.1_19jul2019.pdf IRNSS Signal-In-Space ICD v1.1]</ref>

	[[Category:Fundamentals]]		[[Category:Fundamentals]]
	[[Category:GNSS Signals]]		[[Category:GNSS Signals]]
	[[Category:IRNSS]]		[[Category:IRNSS]]

Gema.Cueto: /* Credits */

2021-04-21T10:09:51Z

Credits

← Older revision		Revision as of 10:09, 21 April 2021
Line 52:		Line 52:

	== Credits ==		== Credits ==
	The information presented in this NAVIPEDIA’s article is an extract of the PhD work performed by Dr. Jose Ángel Ávila Rodríguez in the FAF University of Munich as part of his Doctoral Thesis “On Generalized Signal Waveforms for Satellite Navigation” presented in June 2008, Munich (Germany)		The initial information presented in this NAVIPEDIA’s article was an extract of the PhD work performed by Dr. Jose Ángel Ávila Rodríguez in the FAF University of Munich as part of his Doctoral Thesis “On Generalized Signal Waveforms for Satellite Navigation” presented in June 2008, Munich (Germany)

			This article has been updated by GMV considering the information stated in the latest IRNSS Signal Interface Specification.

	[[Category:Fundamentals]]		[[Category:Fundamentals]]
	[[Category:GNSS Signals]]		[[Category:GNSS Signals]]
	[[Category:IRNSS]]		[[Category:IRNSS]]

Gema.Cueto at 10:06, 21 April 2021

2021-04-21T10:06:26Z

← Older revision		Revision as of 10:06, 21 April 2021
Line 10:		Line 10:
	In April 2016, with the last launch of the constellation's satellite, IRNSS was renamed Navigation Indian Constellation (NAVIC) by India’s Prime Minister Narendra Modi.<ref> [http://gpsworld.com/with-irnss-1g-launch-india-completes-and-renames-its-navigation-constellation/ With IRNSS-1G launch, India completes and renames its navigation constellation]</ref>		In April 2016, with the last launch of the constellation's satellite, IRNSS was renamed Navigation Indian Constellation (NAVIC) by India’s Prime Minister Narendra Modi.<ref> [http://gpsworld.com/with-irnss-1g-launch-india-completes-and-renames-its-navigation-constellation/ With IRNSS-1G launch, India completes and renames its navigation constellation]</ref>

	The messaging service signals from the Indian Regional Navigation Satellite System (IRNSS) are broadcast in L5 and S band ~~frequenciesy~~. The carrier frequency and the bandwidth of transmission for the messaging service are:<ref name="IRNSS ICD">[https://www.isro.gov.in/sites/default/files/article-files/irnss-programme/sis_icd_irnss1a_incois_isro_v1.1_19jul2019.pdf IRNSS Signal-In-Space ICD v1.1]</ref>		The messaging service signals from the Indian Regional Navigation Satellite System (IRNSS) are broadcast in L5 and S band frequencies. The carrier frequency and the bandwidth of transmission for the messaging service are:<ref name="IRNSS ICD">[https://www.isro.gov.in/sites/default/files/article-files/irnss-programme/sis_icd_irnss1a_incois_isro_v1.1_19jul2019.pdf IRNSS Signal-In-Space ICD v1.1]</ref>

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Gema.Cueto at 07:44, 21 April 2021

2021-04-21T07:44:48Z

← Older revision		Revision as of 07:44, 21 April 2021
Line 33:		Line 33:

	::::[[File: IRNSS_Sband.png\|none\|thumb\|280px\|'''''Figure 2:''''' Spectrum for IRNSS Signal in S Band.<ref name="IRNSS ICD"/>]]		::::[[File: IRNSS_Sband.png\|none\|thumb\|280px\|'''''Figure 2:''''' Spectrum for IRNSS Signal in S Band.<ref name="IRNSS ICD"/>]]

	~~::::[[File: QZSS_Sig_Plan_Table_2.png\|none\|thumb\|580px\|'''''Table 1:''''' IRNSS L5 Band technical characteristics.]]~~

	Given the similarity with the Galileo signals in terms of services that IRNSS might be providing, the same convention as for Galileo was employed. That is A for the PRS and B and C for the Open Service data and pilot signals respectively. Furthermore, the spectral properties of the IRNSS signal would be as follows:		Given the similarity with the Galileo signals in terms of services that IRNSS might be providing, the same convention as for Galileo was employed. That is A for the PRS and B and C for the Open Service data and pilot signals respectively. Furthermore, the spectral properties of the IRNSS signal would be as follows:

Gema.Cueto at 07:42, 21 April 2021

2021-04-21T07:42:00Z

← Older revision		Revision as of 07:42, 21 April 2021
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	::::[[File: IRNSS_L5band.png\|none\|thumb\|580px\|'''''Figure 1:''''' Spectrum for Radio Navigation Satellite Services in L Band.<ref name="IRNSS ICD"/>]]		::::[[File: IRNSS_L5band.png\|none\|thumb\|580px\|'''''Figure 1:''''' Spectrum for Radio Navigation Satellite Services in L Band.<ref name="IRNSS ICD"/>]]

	::::[[File: IRNSS_Sband.png\|none\|thumb\|~~480px~~\|'''''Figure 2:''''' Spectrum for IRNSS Signal in S Band.<ref name="IRNSS ICD"/>]]		::::[[File: IRNSS_Sband.png\|none\|thumb\|280px\|'''''Figure 2:''''' Spectrum for IRNSS Signal in S Band.<ref name="IRNSS ICD"/>]]

	::::[[File: QZSS_Sig_Plan_Table_2.png\|none\|thumb\|580px\|'''''Table 1:''''' IRNSS L5 Band technical characteristics.]]		::::[[File: QZSS_Sig_Plan_Table_2.png\|none\|thumb\|580px\|'''''Table 1:''''' IRNSS L5 Band technical characteristics.]]

← Older revision		Revision as of 07:42, 21 April 2021
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	::::[[File: IRNSS_L5band.png\|none\|thumb\|580px\|'''''Figure 1:''''' Spectrum for Radio Navigation Satellite Services in L Band.<ref name="IRNSS ICD"/>]]		::::[[File: IRNSS_L5band.png\|none\|thumb\|580px\|'''''Figure 1:''''' Spectrum for Radio Navigation Satellite Services in L Band.<ref name="IRNSS ICD"/>]]

	::::[[File: IRNSS_Sband.png\|none\|thumb\|~~480px~~\|'''''Figure 2:''''' Spectrum for IRNSS Signal in S Band.<ref name="IRNSS ICD"/>]]		::::[[File: IRNSS_Sband.png\|none\|thumb\|280px\|'''''Figure 2:''''' Spectrum for IRNSS Signal in S Band.<ref name="IRNSS ICD"/>]]

	::::[[File: QZSS_Sig_Plan_Table_2.png\|none\|thumb\|580px\|'''''Table 1:''''' IRNSS L5 Band technical characteristics.]]		::::[[File: QZSS_Sig_Plan_Table_2.png\|none\|thumb\|580px\|'''''Table 1:''''' IRNSS L5 Band technical characteristics.]]