BeiDou Signal Plan - Revision history

Gema.Cueto: Updated reference ICD/SDD links

2026-04-17T14:27:46Z

Updated reference ICD/SDD links

← Older revision		Revision as of 14:27, 17 April 2026
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	\|Title={{PAGENAME}}		\|Title={{PAGENAME}}
	}}		}}
	Presently, the in-orbit operational BDS satellites providing open services include 5 GEO satellites, 7 IGSO satellites and 21 MEO satellites, which can be further divided as 15 BDS-2 satellites ( 5 BDS-2G, 7 BDS-2I, 3 BDS-2M) and 18 BDS-3 satellites (BDS-3M). In addition to B1I and B2I signals, the B1C and B2a ones have started broadcasting by the BDS-3M satellites<ref name="BeiDou Navigation Satellite System Open Service Performance Standard ">[http://en.beidou.gov.cn/SYSTEMS/Officialdocument/~~201812~~/~~P020181227424526837905~~.pdf] BeiDou Navigation Satellite System Open Service Performance ~~Standard（Version 2.0)~~</ref>.		Presently, the in-orbit operational BDS satellites providing open services include 5 GEO satellites, 7 IGSO satellites and 21 MEO satellites, which can be further divided as 15 BDS-2 satellites ( 5 BDS-2G, 7 BDS-2I, 3 BDS-2M) and 18 BDS-3 satellites (BDS-3M). In addition to B1I and B2I signals, the B1C and B2a ones have started broadcasting by the BDS-3M satellites<ref name="BeiDou Navigation Satellite System Open Service Performance Standard ">[http://en.beidou.gov.cn/SYSTEMS/Officialdocument/202110/P020211014595952404052.pdf] BeiDou Navigation Satellite System Open Service Performance Standard</ref>.

Gema.Cueto: Changed the previous edit to keep the same format as other tables in the page

2025-09-03T11:59:02Z

Changed the previous edit to keep the same format as other tables in the page

← Older revision		Revision as of 11:59, 3 September 2025
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	\| Carrier Phase Noise \|\| Third-order phase locked loop with 10 Hz one-sided noise bandwidth		\| Carrier Phase Noise \|\| Third-order phase locked loop with 10 Hz one-sided noise bandwidth
	\|-		\|-
	\| Received Power Levels on Ground \|\| -156 dBW and -158 dBW for ~~a MEO and~~ IGSO ~~satellite respectively~~ (measured at the output of a 0 dBi RHCP user receiving antenna when the satellites are above a 5-degree elevation angle)		\| Received Power Levels on Ground \|\| -156 dBW for MEO and -158 dBW for IGSO satellites (measured at the output of a 0 dBi RHCP user receiving antenna when the satellites are above a 5-degree elevation angle)
	\|-		\|-
	\| Signal Multiplexing Mode \|\| Code Division Multiple Access (CDMA)		\| Signal Multiplexing Mode \|\| Code Division Multiple Access (CDMA)

Gema.Cueto: Minimum received power levels on ground for B2a Band corrected based on values in: BeiDou Navigation Satellite System Signal In Space Interface Control Document, Open Service Signal B2a (Version 1.0)

2025-09-03T11:52:42Z

Minimum received power levels on ground for B2a Band corrected based on values in: BeiDou Navigation Satellite System Signal In Space Interface Control Document, Open Service Signal B2a (Version 1.0)

← Older revision		Revision as of 11:52, 3 September 2025
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	\| Carrier Phase Noise \|\| Third-order phase locked loop with 10 Hz one-sided noise bandwidth		\| Carrier Phase Noise \|\| Third-order phase locked loop with 10 Hz one-sided noise bandwidth
	\|-		\|-
	\| Received Power Levels on Ground \|\| -~~163~~ dBW (measured at the output of a 0 dBi RHCP user receiving antenna when the satellites are above a 5-degree elevation angle)		\| Received Power Levels on Ground \|\| -156 dBW and -158 dBW for a MEO and IGSO satellite respectively (measured at the output of a 0 dBi RHCP user receiving antenna when the satellites are above a 5-degree elevation angle)
	\|-		\|-
	\| Signal Multiplexing Mode \|\| Code Division Multiple Access (CDMA)		\| Signal Multiplexing Mode \|\| Code Division Multiple Access (CDMA)

Natalia.Castrillo at 07:46, 26 August 2025

2025-08-26T07:46:11Z

← Older revision		Revision as of 07:46, 26 August 2025
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	\| Signal Multiplexing Mode \|\| Code Division Multiple Access (CDMA)		\| Signal Multiplexing Mode \|\| Code Division Multiple Access (CDMA)
	\|-		\|-
	\| Signal Bandwidth \|\| ~~4092~~ MHz (centered at the carrier frequency)		\| Signal Bandwidth \|\| 4.092 MHz (centered at the carrier frequency)
	\|-		\|-
	\| Spurious \|\| Shall not exceed -50dBc		\| Spurious \|\| Shall not exceed -50dBc

Gema.Cueto: /* BeiDou B1C Band */

2020-01-13T07:25:00Z

BeiDou B1C Band

← Older revision		Revision as of 07:25, 13 January 2020
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	\| Signal Multiplexing Mode \|\| Code Division Multiple Access (CDMA)		\| Signal Multiplexing Mode \|\| Code Division Multiple Access (CDMA)
	\|-		\|-
	\| Signal Bandwidth \|\| 37.736 MHz (centered at the carrier frequency)		\| Signal Bandwidth \|\| 32.736 MHz (centered at the carrier frequency)
	\|-		\|-
	\| Spurious \|\| Shall not exceed -50dBc		\| Spurious \|\| Shall not exceed -50dBc

Gema.Cueto: /* BeiDou B1C Band */

2020-01-13T06:56:02Z

BeiDou B1C Band

← Older revision		Revision as of 06:56, 13 January 2020
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	== BeiDou B1C Band ==		== BeiDou B1C Band ==
	This section defines the characteristics of the open service signal B1C transmitted by the Medium Earth Orbit (MEO) satellites and the Inclined GeoSynchronous Orbit (IGSO) satellites of BDS-3 for providing open service, and shall not be transmitted by the Geostationary Earth Orbit (GEO) satellites.		This section defines the characteristics of the open service signal B1C transmitted by the Medium Earth Orbit (MEO) satellites and the Inclined GeoSynchronous Orbit (IGSO) satellites of BDS-3 for providing open service, and shall not be transmitted by the Geostationary Earth Orbit (GEO) satellites.
	The signal characteristics described in this chapter pertain to the B1C signal contained within the 37.736 MHz bandwidth with a center frequency of 1575.42MHz.		The signal characteristics described in this chapter pertain to the B1C signal contained within the 32.736 MHz bandwidth with a center frequency of 1575.42MHz.
	The carrier frequencies, modulations and symbol rates of the B1C signal are shown in the following table.<ref>[http://en.beidou.gov.cn/SYSTEMS/Officialdocument/201806/P020180608525871869457.pdf] BeiDou Navigation Satellite System Signal In Space Interface Control Document Open Service Signal B1C (Version 1.0) </ref>		The carrier frequencies, modulations and symbol rates of the B1C signal are shown in the following table.<ref>[http://en.beidou.gov.cn/SYSTEMS/Officialdocument/201806/P020180608525871869457.pdf] BeiDou Navigation Satellite System Signal In Space Interface Control Document Open Service Signal B1C (Version 1.0) </ref>

Gema.Cueto: /* BeiDou B3 Band */

2019-10-15T13:28:56Z

BeiDou B3 Band

← Older revision		Revision as of 13:28, 15 October 2019
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	Where:<br />		Where:<br />
	• Superscript j: satellite number <br />		• Superscript j: satellite number <br />
	• ~~AB1I~~ : amplitude of B3I <br />		• A<sub>B3I</sub> : amplitude of B3I <br />
	• ~~CB1I~~ : ranging code of B3I <br />		• C<sub>B3I</sub> : ranging code of B3I <br />
	• ~~DB1I~~ : data modulated on ranging code of B3I <br />		• D<sub>B3I</sub> : data modulated on ranging code of B3I <br />
	• f3 : carrier initial frequency of B3I <br />		• f<sub>3</sub> : carrier initial frequency of B3I <br />
	• ~~ѰB3I~~ : carrier initial phase of B3I <br />		• Ѱ<sub>B3I</sub> : carrier initial phase of B3I <br />

	To conclude, some technical characteristics on the BeiDou B3 signals are provided next.		To conclude, some technical characteristics on the BeiDou B3 signals are provided next.
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	\| Equipment Group Delay Differential \|\| T<sub>ref</sub> (less than 0.5ns)		\| Equipment Group Delay Differential \|\| T<sub>ref</sub> (less than 0.5ns)
	\|}		\|}


	==References==		==References==

Gema.Cueto at 12:37, 15 October 2019

2019-10-15T12:37:02Z

← Older revision		Revision as of 12:37, 15 October 2019
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	To conclude some technical characteristics of the BeiDou B1C signals are given bellow: <br />		To conclude some technical characteristics of the BeiDou B1C signals are given bellow: <br />
	{\| class="wikitable" style="text-align: left; width: 600px; height: 200px;"		{\| class="wikitable" style="text-align: left; width: 600px; height: 200px;"
	\|+ Beidou B1C signal characteristics ~~<ref>[http://en.beidou.gov.cn/SYSTEMS/Officialdocument/201902/P020190227601370045731.pdf] Beidou B1I signal characteristics</ref>~~		\|+ Beidou B1C signal characteristics
	\|-		\|-
	! Technical KPI		! Technical KPI
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	To conclude, some technical characteristics on the BeiDou B2a signals are presented more in detail in the next table:		To conclude, some technical characteristics on the BeiDou B2a signals are presented more in detail in the next table:
	{\| class="wikitable" style="text-align: left; width: 600px; height: 200px;"		{\| class="wikitable" style="text-align: left; width: 600px; height: 200px;"
	\|+ Beidou B2a signal characteristics ~~<ref>[http://en.beidou.gov.cn/SYSTEMS/Officialdocument/201902/P020190227601370045731.pdf] Beidou B1I signal characteristics</ref>~~		\|+ Beidou B2a signal characteristics
	\|-		\|-
	! Technical KPI		! Technical KPI
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	{\| class="wikitable" style="text-align: left; width: 600px; height: 200px;"		{\| class="wikitable" style="text-align: left; width: 600px; height: 200px;"
	\|+ Beidou B3I signal characteristics ~~<ref>[http://en.beidou.gov.cn/SYSTEMS/Officialdocument/201902/P020190227601370045731.pdf] Beidou B1I signal characteristics</ref>~~		\|+ Beidou B3I signal characteristics
	\|-		\|-
	! Technical KPI		! Technical KPI

Gema.Cueto: /* Credits */

2019-10-15T12:32:09Z

Credits

← Older revision		Revision as of 12:32, 15 October 2019
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	== 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)

Gema.Cueto at 12:22, 15 October 2019

2019-10-15T12:22:11Z

← Older revision		Revision as of 12:22, 15 October 2019
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	• ѰB3I : carrier initial phase of B3I <br />		• ѰB3I : carrier initial phase of B3I <br />

	To conclude, some technical characteristics on the BeiDou B3 signals are provided next ~~[Compass ITU Filing] <ref name="COMPASS_ITU"/>~~.		To conclude, some technical characteristics on the BeiDou B3 signals are provided next.

	{\| class="wikitable" style="text-align: left; width: 600px; height: 200px;"		{\| class="wikitable" style="text-align: left; width: 600px; height: 200px;"