Author Topic: BeiDou Deployment  (Read 16873 times)

Offline beidou

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BeiDou Deployment
« on: 02/03/2016 09:13 pm »
In an interview after successful launch of M3-S satellites, the Director of CSNO (China Satellite Navigation Office) told that 18 more Beidou satellites will be launched by end of 2018 to serve President Xi's "One Belt One Road" strategy and a total number of 40 navigation satellites will be launched for the next 5 years, i.e. during the 13th five-year plan.
« Last Edit: 06/16/2016 08:13 pm by beidou »

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Offline beidou

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Re: Beidou Deployment
« Reply #3 on: 06/15/2016 06:09 pm »
Quote
In related news, the State Council Information Office of the People's Republic of China is due to hold a news conference  tomorrow (June 16, 2016) regarding an upcomning release of  a white paper about BDS.

According to China Radio International, a state-run radio service, during the conference, the information Office will be giving further details of the white paper and the BeiDou satellite navigation system.

http://insidegnss.com/node/5002

Offline beidou

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Re: Beidou Deployment
« Reply #4 on: 06/16/2016 07:09 pm »
The whitepaper released earlier today is attached.

Offline baldusi

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Re: Beidou Deployment
« Reply #5 on: 06/16/2016 07:43 pm »
Is it me or it is just a statement of good intentions with little actual data? I feel like they have a lot of people that really want to show all the details, but the old communist party information denial by default gets in the way.

Offline beidou

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Re: Beidou Deployment
« Reply #6 on: 06/16/2016 08:13 pm »
Is it me or it is just a statement of good intentions with little actual data? I feel like they have a lot of people that really want to show all the details, but the old communist party information denial by default gets in the way.

You are certainly correct. Lack of transparency is a common problem among all Chinese space related projects - might they just don't know how to present information to the general public.

Offline beidou

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Re: BeiDou Deployment
« Reply #7 on: 03/05/2017 01:29 pm »
A beidou satellites launch plan was disclosed by unnamed source.

Offline Steven Pietrobon

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Re: BeiDou Deployment
« Reply #8 on: 03/06/2017 07:43 am »
Here's the list in case it ever disappears.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline input~2

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Re: BeiDou Deployment
« Reply #9 on: 03/06/2017 11:24 am »
At least one misprint:
the line "Beidou-2 I4 retires in Nov 2019"
should read
"Beidou-2 I5 retires in Nov 2019"

Offline schenkus

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Re: BeiDou Deployment
« Reply #10 on: 03/06/2017 12:36 pm »
Do I understand this list correctly that they will keep replacing all the GEO and IGSO satellites even after the MEO satellites are in place ?

Has anyone any information on how big a difference the availabilty of these satellites will make to the quality of Beidou derived positions at that time ?

Offline input~2

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Re: BeiDou Deployment
« Reply #11 on: 03/06/2017 08:08 pm »
Do I understand this list correctly that they will keep replacing all the GEO and IGSO satellites even after the MEO satellites are in place ?
Yes, 10 years ago the final Beidou constellation was planned to include by 2020 35 satellites: 5GEO 3 IGSO and 27 MEO

Offline input~2

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Re: BeiDou Deployment
« Reply #12 on: 03/06/2017 08:09 pm »
A beidou satellites launch plan was disclosed by unnamed source.
@beidou: any hint on where this document come from?

Offline beidou

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Re: BeiDou Deployment
« Reply #13 on: 03/06/2017 08:43 pm »
A beidou satellites launch plan was disclosed by unnamed source.
@beidou: any hint on where this document come from?

I found it on the above link. No idea how this (confidential information, at least in the eyes of Chinese government) leaked out. I think the information is credible except the misprint you have pointed out.

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Re: BeiDou Deployment
« Reply #14 on: 04/02/2017 03:47 pm »

Offline Stan Black

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Re: BeiDou Deployment
« Reply #15 on: 07/23/2017 03:45 pm »
Quote
Keep improving the continuous stability and service accuracy of the BeiDou System, and will launch 2 BeiDou-2 backup satellites in 2018, ensuring its regional service performance maintain stable and grow better.
2 Push forward the research, development and construction of BeiDou-3 system.
In 2017, it is planned to launch 6 to 8 BeiDou-3 MEO satellites
In 2018, about 10 BeiDou-3 MEO satellites and 1 BeiDou-3 GEO satellite will be launched
From 2019 to 2020, 6 BeiDou-3 MEO satellites, 3 BeiDou-3 IGSO satellites and 2 BeiDou-3 GEO satellites will be launched
http://www.unoosa.org/documents/pdf/copuos/2017/copuos2017tech06E.pdf

Offline SmallKing

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Re: BeiDou Deployment
« Reply #16 on: 09/18/2017 04:35 am »
China's navigation system gets powerful chip to improve positioning
Quote
BEIJING: A new powerful chip technology has been introduced in China's national satellite navigation system to provide high-precision positioning.
The chip, which will be attached to the satellites of BeiDou Navigation Satellite System, was unveiled by the Global Navigation Satellite System and Location Based Service (GNSS & LBS) Association of China (GLAC).
The positioning accuracy of the chip reaches at sub-metre level without ground-based augmentation, state-run Xinhua news agency reported.
The chip, developed by Shenzhen-based Allystar Technology, has been earlier used in unmanned driving systems, wearable devices, precision agriculture and smart logistics.
The chip supports the new generation of BDS-3 satellites for high-precision navigation and positioning, the report said.
Besides navigation, China also uses BDS for its military applications to avoid dependence on America's Global Positioning System (GPS).
...
http://economictimes.indiatimes.com/news/science/chinas-navigation-system-gets-powerful-chip-to-improve-positioning/articleshow/60712232.cms
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Offline SmallKing

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Re: BeiDou Deployment
« Reply #17 on: 10/26/2017 05:04 am »
Lei Fanpei said at the 19th National Congress, the BD3 system would reach IOC by the end of next year
« Last Edit: 10/26/2017 05:38 am by SmallKing »
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Offline Moon Rabbit

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Re: BeiDou Deployment
« Reply #18 on: 10/26/2017 05:22 am »
Lei Fanpei said at the 19th National Congress, the BD3 system would reach IOC capacity by the end of next year
IOC capacity?
The Mercury Seven - Carpenter, Cooper, Glenn, Grissom, Schirra, Shepard, Slayton. “Somewhere, something incredible is waiting to be known.” - Carl Sagan

Offline SmallKing

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Re: BeiDou Deployment
« Reply #19 on: 10/26/2017 05:39 am »
Lei Fanpei said at the 19th National Congress, the BD3 system would reach IOC capacity by the end of next year
IOC capacity?
just IOC
https://en.m.wikipedia.org/wiki/Initial_operating_capability
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Offline SmallKing

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Re: BeiDou Deployment
« Reply #20 on: 10/26/2017 05:55 am »
Which means at least 18 sats in operation?

I could be wrong, please correct me if necessary
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Offline Galactic Penguin SST

Re: BeiDou Deployment
« Reply #21 on: 11/04/2017 03:06 pm »
Do we actually know who's who for the production of the phase 3 (a.k.a. "global phase") satellites? It looks like that both CAST and CAS' Shanghai Micro-satellite Center are building satellites for the operational global system, with the two scheduled for launch this month coming from CAST and the two launching next month or so coming from CAS.

How many will the two build respectively, and of what type?
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Offline GELORD

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Re: BeiDou Deployment
« Reply #22 on: 11/04/2017 05:21 pm »
与战士站岗、炊事员做饭一样,航天员是一种职业,工作就是飞行。

Offline GELORD

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Re: BeiDou Deployment
« Reply #23 on: 11/04/2017 05:28 pm »
BEIDOU ALMANAC, 04.11.17
与战士站岗、炊事员做饭一样,航天员是一种职业,工作就是飞行。

Offline GELORD

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Offline beidou

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Re: BeiDou Deployment
« Reply #25 on: 11/04/2017 11:17 pm »


It's ridiculous that the BeiDou constellation status is posted on the Glonass official website, while not on the official BeiDou webportal...

Offline Moon Rabbit

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Re: BeiDou Deployment
« Reply #26 on: 11/05/2017 04:34 am »


It's ridiculous that the BeiDou constellation status is posted on the Glonass official website, while not on the official BeiDou webportal...

That was what i thought too :P
It looks like the official page (English version) was last updated in 2015
http://en.beidou.gov.cn/index.html

Nevertheless, the Chinese version looks to be up to date.
http://www.beidou.gov.cn/
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Offline Moon Rabbit

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Re: BeiDou Deployment
« Reply #27 on: 11/05/2017 04:40 am »
From the GLONASS page, a chart (attached) seems to attribute CAST to the production of all (GEO, MEO and IGSO) phase 3 satellites??? (https://www.glonass-iac.ru/en/guide/beidou.php)

 
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Offline Moon Rabbit

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Re: BeiDou Deployment
« Reply #28 on: 11/05/2017 05:22 am »
...CAS' Shanghai Micro-satellite Center...

How many will the two build respectively, and of what type?

Is the 'Shanghai Micro-satellite Center' the same 'Shanghai Engineering Center for Microsatellite' http://www.microsate.com/
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Offline Galactic Penguin SST

Re: BeiDou Deployment
« Reply #29 on: 11/05/2017 06:32 am »
...CAS' Shanghai Micro-satellite Center...

How many will the two build respectively, and of what type?

Is the 'Shanghai Micro-satellite Center' the same 'Shanghai Engineering Center for Microsatellite' http://www.microsate.com/

Yes.
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Offline SmallKing

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Re: BeiDou Deployment
« Reply #30 on: 11/05/2017 01:04 pm »
Do we actually know who's who for the production of the phase 3 (a.k.a. "global phase") satellites? It looks like that both CAST and CAS' Shanghai Micro-satellite Center are building satellites for the operational global system, with the two scheduled for launch this month coming from CAST and the two launching next month or so coming from CAS.

How many will the two build respectively, and of what type?
Did some searching work, it seemed the first batch of CAS is 6, maybe all MEO sats? And two are waiting for launch, two are undergoing testing

http://bbs.9ifly.cn/forum.php?mod=redirect&goto=findpost&ptid=6292&pid=543283&fromuid=35435
http://www.chinanews.com/gn/2017/11-02/8367174.shtml
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Offline SmallKing

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Re: BeiDou Deployment
« Reply #31 on: 11/06/2017 03:15 am »
Lei Fanpei said at the 19th National Congress, the BD3 system would reach IOC by the end of next year
CCTV just reported 18 Beidou-3 sats would be on orbit by the end of 2018
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Offline VR2

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Re: BeiDou Deployment
« Reply #32 on: 11/13/2017 07:46 pm »

It's ridiculous that the BeiDou constellation status is posted on the Glonass official website, while not on the official BeiDou webportal...

That was what i thought too :P

Mainly at least somewhere. Here is a source of information: По данным Исследовательского центра тестирования и оценки при Китайской канцелярии по спутниковой навигации.

Additional information here: http://gpsworld.com/the-almanac/

But there is no information about the operation of each satellite. :(

Offline VR2

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Re: BeiDou Deployment
« Reply #33 on: 03/17/2018 07:44 pm »
Staus report from 12.3.2018 (last oldest version - to PRN C17)

Offline VR2

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Re: BeiDou Deployment
« Reply #34 on: 03/17/2018 07:47 pm »
And status report from today (version with 37 (!) satellites)

Offline Galactic Penguin SST

Re: BeiDou Deployment
« Reply #35 on: 03/18/2018 05:56 am »
Is there a source where these graphs can be found, or are they your own work?
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Offline VR2

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Re: BeiDou Deployment
« Reply #36 on: 03/18/2018 07:44 pm »
Is there a source where these graphs can be found, or are they your own work?
Source exists. I've been looking for him for a long time. :P
http://www.csno-tarc.cn/system/fitness

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Re: BeiDou Deployment
« Reply #39 on: 06/09/2018 05:21 pm »
Progress and performance evaluation of BeiDou global navigation satellite system: Data analysis based on BDS-3 demonstration system
http://engine.scichina.com/publisher/scp/journal/SCES/61/5/10.1007/s11430-017-9186-9?slug=full%20text


Quote
The first two Medium Earth Orbit (MEO) satellites of the third generation of BeiDou satellite navigation System (BDS-3) were successfully launched on November 5, 2017. This historical launch starts the new era of the global navigation satellite system of BeiDou. Before the first two satellites of BDS-3, a demonstration system for BDS-3 with five satellites, including two Inclined Geosynchronous Orbit satellites (IGSO) and three MEO satellites, was established between 2015 and 2016 for testing the new payloads, new designed signals and new techniques. In the demonstration system, the new S frequency signal and satellite hydrogen clock as well as inter-satellite link (ISL) based on Ka-band signals with time-division multiple addresses (TDMA) were tested. This paper mainly analyzes the performances of the demonstration system, including the signal-to-noise ratios, pseudorange errors and the multipath errors of the civilian signals of BDS-3. The qualities of signals in space, time synchronization and timing precision were tested as well. Most of the performances were compared with those of the regional BeiDou satellite navigation system (BDS-2). At last, the performances of positioning, navigation and timing (PNT) of the future BeiDou global system (BDS-3) were evaluated based on the signal quality of the present demonstration satellite system.

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Re: BeiDou Deployment
« Reply #40 on: 07/12/2018 12:06 pm »

Offline beidou

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Offline zubenelgenubi

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Re: BeiDou Deployment
« Reply #42 on: 08/24/2018 02:45 pm »
« Last Edit: 08/24/2018 02:47 pm by zubenelgenubi »
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Offline input~2

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Re: BeiDou Deployment
« Reply #43 on: 08/26/2018 08:10 am »
Ground tracks of BDS satellites as of August 21, 2018 16:00:00 UTC

Offline input~2

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Re: BeiDou Deployment
« Reply #44 on: 08/26/2018 08:20 am »
Updated launch list

Offline GELORD

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Re: BeiDou Deployment
« Reply #45 on: 08/31/2018 12:28 am »

BEIDOU CONSTELLATION STATUS 30.08.18

Total satellites in constellation-33
SV is included in operational orbital constellation-15
SV is not included in operational orbital constellation-18

https://www.glonass-iac.ru/en/BEIDOU/
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Offline nzguy

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Re: BeiDou Deployment
« Reply #46 on: 09/21/2018 02:38 am »
I see the latest reports are for another 4 MEO sats by the end of the year. How many more sats are needed to finish the BDS-3 MEO constellation?

Will we see any more launches of MEO in November and December?

Offline russianhalo117

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Re: BeiDou Deployment
« Reply #47 on: 09/21/2018 06:52 am »
I see the latest reports are for another 4 MEO sats by the end of the year. How many more sats are needed to finish the BDS-3 MEO constellation?

Will we see any more launches of MEO in November and December?
Last 4 MEO sats of 2018 are launching on 2 flights next month. GEO birds are launching in November and potentially December but later not confirmed.

Online Phillip Clark

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Re: BeiDou Deployment
« Reply #48 on: 09/21/2018 07:16 am »
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Offline GELORD

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Re: BeiDou Deployment
« Reply #49 on: 09/21/2018 06:24 pm »
BEIDOU CONSTELLATION STATUS 21.09.18

Total satellites in constellation-33
SV is included in operational orbital constellation-15
SV is not included in operational orbital constellation-18

https://www.glonass-iac.ru/en/BEIDOU/index.php
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Offline nzguy

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Re: BeiDou Deployment
« Reply #50 on: 10/03/2018 04:08 am »
Looks like BDS-3 is starting to come to life according to http://www.csno-tarc.cn/system/health&ce=english

The GLONASS site has also moved C19 and C28 into the operational constellation https://www.glonass-iac.ru/en/BEIDOU/

I review the RINEX files from IGS and C28 did indeed send healthy flag yesterday.

Offline nzguy

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Re: BeiDou Deployment
« Reply #51 on: 10/03/2018 07:19 am »
The official page has now been updated.

Now BDS 2 IGSO7 (C16), as well as BDS3 MEO1-S (C19) and MEO2-S (C28) are operational.

BDS 3 MEO1 and MEO8 have also reappeared at C47 and C48. Previously they had disappeared back in June when MEO1-S and MEO2-S replaced their PRNs.

Offline nzguy

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Re: BeiDou Deployment
« Reply #52 on: 10/03/2018 08:44 am »
Confirmed that a Septentrio receiver in San Francisco is tracking a healthy C19 satellite on B1 only. Receiver will need firmware update to receive the new B2 and B3 signals.

Offline nzguy

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Re: BeiDou Deployment
« Reply #53 on: 10/03/2018 09:27 am »
It look like this is the official annoucement? http://www.beidou.gov.cn/yw/xwzx/201810/t20181001_16229.html

Offline SciNews

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Re: BeiDou Deployment
« Reply #54 on: 12/28/2018 02:06 pm »
China's BeiDou navigation system starts global service http://www.xinhuanet.com/english/2018-12/27/c_137702707.htm
Quote
China's BeiDou Navigation Satellite System (BDS) has started to provide global service, said BDS Spokesperson Ran Chengqi on Thursday.
At a press conference of the State Council Information Office, Ran said the construction of the BDS-3 primary system had been completed.
"This signifies that BDS has officially entered the global era as the BDS expands from a regional system to a global navigation system," Ran said.
"From now on, no matter where you go, BDS will always be with you," said Ran.
The positioning accuracy of the system has reached 10 meters globally and five meters in the Asia-Pacific region. Its velocity accuracy is 0.2 meters per second, while its timing accuracy stands at 20 nanoseconds, according to Ran.
By the end of 2018, there were a total of 33 BDS satellites operating in orbit, including 15 BDS-2 satellites and 18 BDS-3 satellites.
China plans to launch another 11 BDS-3 satellites and one BDS-2 satellite in the coming two years to form the complete global network, which will further enhance the global service performance, Ran said.

Edit: the official announcement
The BDS-3 Preliminary System Is Completed to Provide Global Services http://en.beidou.gov.cn/WHATSNEWS/201812/t20181227_16837.html
Quote
Today, together with other documents, we are releasing the new BDS Open Service Performance Standard (version 2.0). After being tested and evaluated globally, the BDS service performance standards are as follows:
 
System service coverage: global 
Positioning accuracy: 10 meters horizontal and 10 meters vertical (95% confidence level);
Velocity accuracy: 0.2 meters per second (95% confidence level);
Timing accuracy: 20 nanoseconds (95% confidence level);
System service availability: better than 95%.
 
of which in the Asia-Pacific region, the positioning accuracies are 5 meters horizontally and 5 meters vertically (95% confidence level). The BDS services are available worldwide, including the “Belt and Road” countries and regions.
« Last Edit: 12/28/2018 02:48 pm by SciNews »

Online Liss

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Re: BeiDou Deployment
« Reply #55 on: 12/28/2018 03:15 pm »
All the 18 Beidou 3 medium orbit satellites are turned on according to http://www.csno-tarc.cn/system/constellation
This message reflects my personal opinion based on open sources of information.

Online Liss

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Re: BeiDou Deployment
« Reply #56 on: 01/03/2019 02:18 pm »
Strange enough only five newest BD3 MEO satellites (C25 through C29, all from the Shanghai academy of microsatellites) have been included into almanac accessible via https://www.glonass-iac.ru/en/BEIDOU/ephemeris.php or directly from http://www.csno-tarc.cn/system/almanac .
This message reflects my personal opinion based on open sources of information.

Offline nzguy

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Re: BeiDou Deployment
« Reply #57 on: 01/08/2019 03:19 am »
Why are the next MEO launches so late in the year? Did the rapid launches catch up with the satellite production?

Curious why they would launch the IGSOs before the rest of the MEOs.

Online Liss

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Re: BeiDou Deployment
« Reply #58 on: 01/08/2019 04:15 pm »
Beidou 3 MEO satellites with PRN C19 through C24 has been added to the almanac. C22 is unhealthy and 13 MEO birds are healthy: three Beidou 2 and ten Beidou 3.
This message reflects my personal opinion based on open sources of information.

Offline nzguy

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Re: BeiDou Deployment
« Reply #59 on: 01/09/2019 01:58 am »
Worth noting that the old 2016 Beidou 2 ICD for B1 and B2 signal does not support PRNs above 30 in the almanac. However the 2018 B3 ICD expanded the PRN range and the almanac size.

So it will be interesting to see how long it takes for them to add PRN 31-37 to the almanac as they might be having to modify software and GNSS receivers to support it. I also expect they will need to release revision to the B1/B2 ICD.

Offline Josh_from_Canada

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Re: BeiDou Deployment
« Reply #60 on: 01/12/2019 08:56 pm »
It looks like the whole constellation has went offline.

http://www.csno-tarc.cn/system/health&ce=english
« Last Edit: 01/13/2019 12:25 am by Josh_from_Canada »

Offline russianhalo117

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Re: BeiDou Deployment
« Reply #61 on: 01/14/2019 05:52 am »
It looks like the whole constellation has went offline.

http://www.csno-tarc.cn/system/health&ce=english
Could be data server to the website is offline/crashed.  This has happened before. Otherwise update underway. Some are planned as the constellation furthers completion.

Offline nzguy

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Re: BeiDou Deployment
« Reply #62 on: 01/14/2019 09:00 am »
All my GPS receivers are still tracking them. Also the time stamp at bottom indicates the graph hasn't been updated in 2 days
« Last Edit: 01/14/2019 09:02 am by nzguy »

Offline Josh_from_Canada

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Re: BeiDou Deployment
« Reply #63 on: 01/14/2019 09:02 pm »
It looks like the system was down from 04:00 UTC on the 12th till 00:00 UTC on the 14th.