Author Topic: BeiDou Deployment  (Read 16859 times)

Online Satori

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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/
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 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 »
I've always been crazy but it's kept me from going insane - WJ.

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
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 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.