China completes core network of GPS rival Beidou with latest satellite launch
- Beidou is one of only four global navigation satellite systems, along with America's GPS, Russia's Glonass and Europe's Galileo
China sent two new satellites into space on Monday, bringing the country another step closer to the full deployment of the Beidou navigation system, its rival to the US-owned GPS.
After a flight time of over three hours, the two satellites made their way into orbit, joining 22 others at an altitude of 20,000 kilometres (12,427 miles), according to Beidou’s website. With eight satellites evenly distributed on each of the three-plane deployment, each location on earth can now be covered by five or six satellites of the entire system at any one time, a precondition for global service, the official Xinhua news agency reported, citing Wang Ping, the chief designer of the third-generation Beidou satellites.
Beijing started in 1994 to develop Beidou, the Chinese name for the seven stars that make up the Big Dipper, to cut the People's Liberation Army’s reliance on the American-built GPS.
The first-generation Beidou was completed in 2000 and worked as an experiment for domestic service. The second generation went into full operation in 2012, providing positioning, navigation, timing and messaging services to China and other parts of Asia-Pacific.
The current third-generation, with two more satellites scheduled for launch, is expected to be fully built in the first half of 2020.