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China's Big Dipper starts beaming navigation signals
By Wang Qingchu |
December 27, 2011, Tuesday
|
Online Edition
Online Edition
China's Beidou satellite navigation system started to provide continuous navigation and positioning services to users in China and neighboring countries on a trial basis from Tuesday.
The system, called the Big Dipper in Chinese, currently consists of 10 satellites and will eventually have 30-plus satellites. It has an accuracy of about 25 meters during the trial run, said Ran Chengqi, director of the China Satellite Navigation System Management Office, at a press conference.
The accuracy will be improved to around 10 meters by the end of next year after six more satellites are sent into orbit. By then, the service will cover most of the Asia Pacific Region, Ran added.
Beidou's services are now available in regions between 84 degrees and 160 degrees East Longitude and from 55 degrees South Latitude to 55 degrees North Latitude.
Accuracy of its time service stands at 50 nanoseconds, Ran said.
Compared with the satellite navigation systems developed by the United States (GPS), Europe (Galileo) and Russia (Glonass), Beidou is the only one that also offers telecommunication services and its cost is cheaper than GPS.
Beidou is expected to provide global service by 2020 and will be used in more areas from engineering monitoring to traffic management to rescue missions, besides navigation service.
The system, called the Big Dipper in Chinese, currently consists of 10 satellites and will eventually have 30-plus satellites. It has an accuracy of about 25 meters during the trial run, said Ran Chengqi, director of the China Satellite Navigation System Management Office, at a press conference.
The accuracy will be improved to around 10 meters by the end of next year after six more satellites are sent into orbit. By then, the service will cover most of the Asia Pacific Region, Ran added.
Beidou's services are now available in regions between 84 degrees and 160 degrees East Longitude and from 55 degrees South Latitude to 55 degrees North Latitude.
Accuracy of its time service stands at 50 nanoseconds, Ran said.
Compared with the satellite navigation systems developed by the United States (GPS), Europe (Galileo) and Russia (Glonass), Beidou is the only one that also offers telecommunication services and its cost is cheaper than GPS.
Beidou is expected to provide global service by 2020 and will be used in more areas from engineering monitoring to traffic management to rescue missions, besides navigation service.
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