At the 8th China Satellite Navigation Academic Annual Conference held on May 23, China's satellite navigation system management office director Ran Cheng said that China has started the third step of the Beidou system construction, namely Beidou III system, launched in the second half of this year 6 ~ 8 global network satellite.
This means that from the second half of this year, China's Beidou satellite will officially start the global network, opened the Beidou system for global service curtain.
Next, will be staged 2018 years ago 18 Beidou satellite launch drama. Ran Cheng said that this will take the lead for the "one way" along the country to provide basic services, until 2020, China built a world-class global satellite navigation system, and ultimately the formation of global service capabilities.
In contrast, China's Beidou system, as well as the European Galileo (Galileo) system is still in the "catch" position. In fact, there is a global satellite navigation system (GNSS) club, only four members, namely the United States GPS, the European Galileo GALILEO, the Russian GLONASS GLONASS and China's Big Dipper.
Among them, China's Big Dipper started the latest. Ran Cheng told reporters that China in the late 20th century began to explore suitable for the national conditions of the satellite navigation system development path, and gradually form a "three-step" development strategy -
The first step is to build the Beidou satellite navigation test system at the end of 2000, namely "Beidou No.1" to provide services to China;
The second step is the completion of the end of 2012 by the 14 network satellite and 32 ground station heaven and earth collaborative network operation of the satellite navigation system, the "Beidou II" to provide services to the Asia-Pacific region;
The third step is to build a global satellite navigation system consisting of five geostationary satellites and 30 non-geostationary orbit satellites by 2020, namely "Beidou III" to provide services to the world.
At present, the first two steps have been achieved, which also makes our country following the United States (GPS), Russia (GLONASS) after the world's third country with independent satellite navigation system. So what is the level of China's Big Dipper at present?
At the annual meeting, China Satellite Navigation Systems Committee Chairman Wang Li said that at present, the Big Dipper system for the Asia-Pacific region users to provide stable and reliable space-time information services, 15 satellites in orbit stable operation, five new generation of Beidou satellite has been completed in orbit debugging , Is about to work.
Ran Cheng it revealed more detailed, he said, compared to the Big Dipper,Silver Wing Beidou II system performance steadily, in 2016 launched two on-orbit satellite backup, positioning accuracy from 10 meters to 8 meters. With China's independent development of the "rice-level fast positioning Beidou chip" officially launched, Beidou system applications have officially entered the "rice-oriented era."
China Compass satellite navigation system chief architect Yang Changfeng said that the Beidou III system in the Beidou II system based on the increase of better performance, and other systems compatible with a higher degree of interoperability, user experience better service signal, to achieve A more accurate satellite-borne atomic clock and inter-satellite link technology, high-precision space-time information service capabilities will be greatly improved.
Ran Cheng also mentioned that the second phase of the Beidou Foundation Enhancement System will be completed in 2018 to carry out the meter-level, decimeter-level positioning accuracy of the major areas of the country, and the coverage of the centimeter-level and post-processing millimeter-level corrections , Which are expected to further improve the accuracy of the Beidou system.
It is worth mentioning that the international identity of China's Big Dipper "legalization" speed is also accelerating. Ran Cheng said that since last year, following the Beidou system to obtain international maritime applications after the legal status of the Beidou international maritime standards in the field has made significant progress. This year in March, compatible with GPS, Beidou, GLONASS multi-system shipborne receiver standards were adopted.
This means that from the second half of this year, China's Beidou satellite will officially start the global network, opened the Beidou system for global service curtain.
Next, will be staged 2018 years ago 18 Beidou satellite launch drama. Ran Cheng said that this will take the lead for the "one way" along the country to provide basic services, until 2020, China built a world-class global satellite navigation system, and ultimately the formation of global service capabilities.
At the annual academic conference, the United States national space-based PNT coordination office director Harold Martin mentioned that GPS has developed to the fifth generation of satellites, satellite network, including 36 satellites, of which 31 per day to provide navigation signals, Its signal accuracy has reached 45.3 cm to 70.3 cm between.
In contrast, China's Beidou system, as well as the European Galileo (Galileo) system is still in the "catch" position. In fact, there is a global satellite navigation system (GNSS) club, only four members, namely the United States GPS, the European Galileo GALILEO, the Russian GLONASS GLONASS and China's Big Dipper.
Among them, China's Big Dipper started the latest. Ran Cheng told reporters that China in the late 20th century began to explore suitable for the national conditions of the satellite navigation system development path, and gradually form a "three-step" development strategy -
The first step is to build the Beidou satellite navigation test system at the end of 2000, namely "Beidou No.1" to provide services to China;
The second step is the completion of the end of 2012 by the 14 network satellite and 32 ground station heaven and earth collaborative network operation of the satellite navigation system, the "Beidou II" to provide services to the Asia-Pacific region;
The third step is to build a global satellite navigation system consisting of five geostationary satellites and 30 non-geostationary orbit satellites by 2020, namely "Beidou III" to provide services to the world.
At present, the first two steps have been achieved, which also makes our country following the United States (GPS), Russia (GLONASS) after the world's third country with independent satellite navigation system. So what is the level of China's Big Dipper at present?
At the annual meeting, China Satellite Navigation Systems Committee Chairman Wang Li said that at present, the Big Dipper system for the Asia-Pacific region users to provide stable and reliable space-time information services, 15 satellites in orbit stable operation, five new generation of Beidou satellite has been completed in orbit debugging , Is about to work.
Ran Cheng it revealed more detailed, he said, compared to the Big Dipper,Silver Wing Beidou II system performance steadily, in 2016 launched two on-orbit satellite backup, positioning accuracy from 10 meters to 8 meters. With China's independent development of the "rice-level fast positioning Beidou chip" officially launched, Beidou system applications have officially entered the "rice-oriented era."
China Compass satellite navigation system chief architect Yang Changfeng said that the Beidou III system in the Beidou II system based on the increase of better performance, and other systems compatible with a higher degree of interoperability, user experience better service signal, to achieve A more accurate satellite-borne atomic clock and inter-satellite link technology, high-precision space-time information service capabilities will be greatly improved.
Ran Cheng also mentioned that the second phase of the Beidou Foundation Enhancement System will be completed in 2018 to carry out the meter-level, decimeter-level positioning accuracy of the major areas of the country, and the coverage of the centimeter-level and post-processing millimeter-level corrections , Which are expected to further improve the accuracy of the Beidou system.
It is worth mentioning that the international identity of China's Big Dipper "legalization" speed is also accelerating. Ran Cheng said that since last year, following the Beidou system to obtain international maritime applications after the legal status of the Beidou international maritime standards in the field has made significant progress. This year in March, compatible with GPS, Beidou, GLONASS multi-system shipborne receiver standards were adopted.
Ran Cheng said that at present, the Beidou system in the field of mobile communications has completed 26 international standards development work, in its lead, the Beidou in China's mobile communications penetration rate has reached 25%. "With the development of the Beidou global system, the Beidou will be infinitely possible in the era of all things," he said.
