China launches two satellites as it builds GPS rival

[Hindustani78]

Last Updated: Sunday, July 26, 2015 - 06:45
China launches two satellites as it builds GPS rival | Zee News


Beijing: China launched two new satellites into space today, state media reported, as it builds a homegrown satellite navigation system to rival the US's Global Positioning System.


A rocket carrying the satellites was launched from the Xichang Satellite Launch Center in southwestern Sichuan province at 8:29 pm (1229 GMT), the official Xinhua news agency said.

The satellites are the 18th and 19th launched by China as it develops its domestic navigation system Beidou, or Compass. They take the total number launched this year to three.


Beidou is currently centred on the Asia Pacific region but is slated to cover the whole world by 2020.

"The successful launch marks another solid step in building Beidou into a navigation system with global coverage," the satellite launch centre was quoted by Xinhua as saying.


Beidou -- named after the Chinese term for the plough or Big Dipper constellation -- was announced in 2012, joining the US's GPS, Russia's GLONASS and European Union's Galileo.

It is already used by several Asian countries including Laos, Pakistan and Thailand.

The new satellites will be deployed in "testing a new type of navigation signalling and inter-satellite links" as well as providing navigation services, Xinhua said.

The Beidou system is currently used for civilian services such as navigation and messaging, as well as in the transportation and weather forecasting sectors. It also has military applications.

PTI

 

[Wolfhound]

Last Updated: Sunday, July 26, 2015 - 06:45
China launches two satellites as it builds GPS rival | Zee News


Beijing: China launched two new satellites into space today, state media reported, as it builds a homegrown satellite navigation system to rival the US's Global Positioning System.


A rocket carrying the satellites was launched from the Xichang Satellite Launch Center in southwestern Sichuan province at 8:29 pm (1229 GMT), the official Xinhua news agency said.

The satellites are the 18th and 19th launched by China as it develops its domestic navigation system Beidou, or Compass. They take the total number launched this year to three.


Beidou is currently centred on the Asia Pacific region but is slated to cover the whole world by 2020.

"The successful launch marks another solid step in building Beidou into a navigation system with global coverage," the satellite launch centre was quoted by Xinhua as saying.


Beidou -- named after the Chinese term for the plough or Big Dipper constellation -- was announced in 2012, joining the US's GPS, Russia's GLONASS and European Union's Galileo.

It is already used by several Asian countries including Laos, Pakistan and Thailand.

The new satellites will be deployed in "testing a new type of navigation signalling and inter-satellite links" as well as providing navigation services, Xinhua said.

The Beidou system is currently used for civilian services such as navigation and messaging, as well as in the transportation and weather forecasting sectors. It also has military applications.

PTI

@Beast How many have been launched as of yet and how much area is currently being covered(including new satellites) by them.

 

[TaiShang]

China's homegrown navigation system one step closer to global coverage

2015-07-27

Two navigation satellites launched by China on Saturday mark another solid step towards building a homegrown positioning system with global coverage, a lead scientist said Sunday.

Scientists put two satellites for the Beidou Navigation Satellite System (BDS), an indigenous alternative to U.S.-operated GPS, into orbit Saturday at midnight.

According to Xie Jun, chief engineer of the Beidou project, the "twin sats" are designed to be "trail blazers" as the BDS expands its coverage globally.

Named after the Chinese term for the plough or the Big Dipper constellation, the Beidou project was formally launched in 1994, some 20 years after the inception of GPS. It was not till 2000 when the first Beidou satellite was launched.

Nonetheless, by 2012, a regional network had already taken shape, and the BDS is already providing positioning, navigation, timing and short message services in China and several other Asian countries.

Beidou is currently one of the four dominating navigation systems in the world, along with the U.S. GPS, Russia's GLONASS, and the European Union's Galileo.

The plan is to set up a complete "constellation" of 35 navigation satellites and expand their coverage to the entire globe by 2020.

Saturday's launch of the "twin sats" - the 18th and 19th of the whole Beidou project and the third this year - and their mission to test navigation signaling and inter-satellite links, are a big part of that plan, said Xie. ( @Wolfhound )

"We have deployed a new type of signal format for the 'twin sats', which enable us to double the data exchanged between satellites within the same period of time," he said, "That means faster and better service for BDS clients."

Xie said scientists will examine the satellites' distance measurement and anti-jamming capabilities. They will also join the duo with the 17th Beidou satellite, launched in late March, in the mission of testing inter-satellite connectivity.

The inter-satellite links will also allow Beidou satellites to connect with their GPS and GLONASS counterparts.

"The compatibility edge allows BDS clients to use GPS data for corrections in positioning in order to improve service accuracy and convenience," Xie said.

"Though we started late, the BDS now could almost rival any foreign counterparts in terms of general performance. In fact, we might even have a little edge in the fields of regional enhanced services, positioning reports, and short message services," he said.

HOME MADE

Xie said 98 percent of the "twin sats" components were domestically made.

"When we first started the Beidou project, China was not at the time technologically equipped to manufacture much-needed items of technical sophistication, so we have to buy them from other countries," he said.

Technology embargoes made it hard, and often the purchased items malfunctioned.

Scientists managed to break that barrier, gradually substituting foreign-made satellite parts with domestic ones, Xie said.

These include the rubidium atomic clocks. Dubbed the "heart" of the navigation satellites, the atomic clocks are the workhorses which send synchronized signals so sat-nav receivers can triangulate their position on Earth.

Xie said high-precision rubidium atomic clocks carried by the "twin sats" could provide more accurate positioning for BDS.

A new-generation engine, measuring only 600 grams in weight, also helps the satellites move more precisely in space and can last up to 15 years, almost doubling the life expectancy of its predecessors.

 

[Beidou2020]

Key points:

"We have deployed a new type of signal format for the 'twin sats', which enable us to double the data exchanged between satellites within the same period of time," he said, "That means faster and better service for BDS clients."

Xie said scientists will examine the satellites' distance measurement and anti-jamming capabilities. They will also join the duo with the 17th Beidou satellite, launched in late March, in the mission of testing inter-satellite connectivity.

The inter-satellite links will also allow Beidou satellites to connect with their GPS and GLONASS counterparts.

"The compatibility edge allows BDS clients to use GPS data for corrections in positioning in order to improve service accuracy and convenience," Xie said.

"Though we started late, the BDS now could almost rival any foreign counterparts in terms of general performance. In fact, we might even have a little edge in the fields of regional enhanced services, positioning reports, and short message services," he said.

HOME MADE

Xie said 98 percent of the "twin sats" components were domestically made.

"When we first started the Beidou project, China was not at the time technologically equipped to manufacture much-needed items of technical sophistication, so we have to buy them from other countries," he said.

Technology embargoes made it hard, and often the purchased items malfunctioned.

Scientists managed to break that barrier, gradually substituting foreign-made satellite parts with domestic ones, Xie said.

These include the rubidium atomic clocks. Dubbed the "heart" of the navigation satellites, the atomic clocks are the workhorses which send synchronized signals so sat-nav receivers can triangulate their position on Earth.

Xie said high-precision rubidium atomic clocks carried by the "twin sats" could provide more accurate positioning for BDS.

A new-generation engine, measuring only 600 grams in weight, also helps the satellites move more precisely in space and can last up to 15 years, almost doubling the life expectancy of its predecessors.

 

[opruh]

Better than the gps crap.

 

[TaiShang]

Key points:

"We have deployed a new type of signal format for the 'twin sats', which enable us to double the data exchanged between satellites within the same period of time," he said, "That means faster and better service for BDS clients."

Xie said scientists will examine the satellites' distance measurement and anti-jamming capabilities. They will also join the duo with the 17th Beidou satellite, launched in late March, in the mission of testing inter-satellite connectivity.

The inter-satellite links will also allow Beidou satellites to connect with their GPS and GLONASS counterparts.

"The compatibility edge allows BDS clients to use GPS data for corrections in positioning in order to improve service accuracy and convenience," Xie said.

"Though we started late, the BDS now could almost rival any foreign counterparts in terms of general performance. In fact, we might even have a little edge in the fields of regional enhanced services, positioning reports, and short message services," he said.

HOME MADE

Xie said 98 percent of the "twin sats" components were domestically made.

"When we first started the Beidou project, China was not at the time technologically equipped to manufacture much-needed items of technical sophistication, so we have to buy them from other countries," he said.

Technology embargoes made it hard, and often the purchased items malfunctioned.

Scientists managed to break that barrier, gradually substituting foreign-made satellite parts with domestic ones, Xie said.

These include the rubidium atomic clocks. Dubbed the "heart" of the navigation satellites, the atomic clocks are the workhorses which send synchronized signals so sat-nav receivers can triangulate their position on Earth.

Xie said high-precision rubidium atomic clocks carried by the "twin sats" could provide more accurate positioning for BDS.

A new-generation engine, measuring only 600 grams in weight, also helps the satellites move more precisely in space and can last up to 15 years, almost doubling the life expectancy of its predecessors.

Indeed. 98% of domestic content is good. Hope it will become 100% soon. The more, the better

 

[Beidou2020]

Indeed. 98% of domestic content is good. Hope it will become 100% soon. The more, the better

So much for the US export ban on satellites and satellite components to China

When someone denies technology to China, China takes it as a maths challenge and does whatever it takes to solve the problems and become self-sufficient. It's the sheer determination of China and the desire to give the middle finger to the people trying to hold China down.

China always finds a way to become self-sufficient. China has the money, the talent, the political will and the determination to succeed. Impossible to stop such a driven country like China.

 

[55100864]

Key points:

"We have deployed a new type of signal format for the 'twin sats', which enable us to double the data exchanged between satellites within the same period of time," he said, "That means faster and better service for BDS clients."

It also means beidou can play a datalink terminal role in war time, as far as i know, GPS satellites can only send date, but can't receive data.

 

[Arsalan]

@Beast How many have been launched as of yet and how much area is currently being covered(including new satellites) by them.

You never bothered to read the post that you were quoting?
READ that post, it have answer to all the questions you ask. I am surprised that you just went it, never read the post and the quoted it asking questions that were answered in that very post!!

 

[Shotgunner51]

Good progress!

 

[Beast]

@Beast How many have been launched as of yet and how much area is currently being covered(including new satellites) by them.

Whole asian continent and half of Asian pacific. 19 Satelite in place.

 

[Wolfhound]

You never bothered to read the post that you were quoting?
READ that post, it have answer to all the questions you ask. I am surprised that you just went it, never read the post and the quoted it asking questions that were answered in that very post!!

It mentions Asia Pacific which is region wise i wanted to know the exact number of countries it covered. As for the number of satellites, some times number 3 and 4 are launched before 2 and 1, i wanted confirmation of its number.

 

[Arsalan]

It mentions Asia Pacific which is region wise i wanted to know the exact number of countries it covered. As for the number of satellites, some times number 3 and 4 are launched before 2 and 1, i wanted confirmation of its number.

I am sorry dear but i still have to refer you to the same post and still insist it have answer to both your questions. here i have marked it in red, hope that will clear things up.

Last Updated: Sunday, July 26, 2015 - 06:45
China launches two satellites as it builds GPS rival | Zee News


Beijing: China launched two new satellites into space today, state media reported, as it builds a homegrown satellite navigation system to rival the US's Global Positioning System.


A rocket carrying the satellites was launched from the Xichang Satellite Launch Center in southwestern Sichuan province at 8:29 pm (1229 GMT), the official Xinhua news agency said.

The satellites are the 18th and 19th launched by China as it develops its domestic navigation system Beidou, or Compass. They take the total number launched this year to three.


Beidou is currently centred on the Asia Pacific region but is slated to cover the whole world by 2020.

"The successful launch marks another solid step in building Beidou into a navigation system with global coverage," the satellite launch centre was quoted by Xinhua as saying.


Beidou -- named after the Chinese term for the plough or Big Dipper constellation -- was announced in 2012, joining the US's GPS, Russia's GLONASS and European Union's Galileo.

It is already used by several Asian countries including Laos, Pakistan and Thailand.

The new satellites will be deployed in "testing a new type of navigation signalling and inter-satellite links" as well as providing navigation services, Xinhua said.

The Beidou system is currently used for civilian services such as navigation and messaging, as well as in the transportation and weather forecasting sectors. It also has military applications.

PTI

There is no way to count how many countries it COVERS, the satelliates are not bound by borders so it may be covering some parts of one country while leaving the others. That is the reasons it will always be mentioned in REGION and not NUMBER of countries. If you want to ask WHO MANY COUNTRIES ARE USING this that is a different question.

Again, i will request you that it will be helpful if you can look for the things you want to learn about, if not on open internet at least in the post you are quoting to ask the question.

 

[Wolfhound]

I am sorry dear but i still have to refer you to the same post and still insist it have answer to both your questions. here i have marked it in red, hope that will clear things up.

There is no way to count how many countries it COVERS, the satelliates are not bound by borders so it may be covering some parts of one country while leaving the others. That is the reasons it will always be mentioned in REGION and not NUMBER of countries. If you want to ask WHO MANY COUNTRIES ARE USING this that is a different question.

Again, i will request you that it will be helpful if you can look for the things you want to learn about, if not on open internet at least in the post you are quoting to ask the question.

You didnt understand what i was trying to ask, i should have been clearer in asking the question. I wanted something like this to see the coverage of the system and how much it increased with the two additional satellites. I knew that a diagram like this was difficult to be provided thats why i asked for the names of the countries it was covering instead.

 

[cirr]

Extremely busy schedule for the Chinese space programme from the recent Beidou twin-satellite launch to the end of 2017.