On April 5, according to media reports, the fifty-fifth Beidou navigation satellite, the last Beidou-3 satellite, arrived at the Xichang Satellite Launch Center on schedule, which marked the final stage of the Beidou Global Constellation Network. The satellite is a geostationary orbit satellite and will be tested, assembled and refilled at the Xichang Satellite Launch Center, and is scheduled for launch in May.
It is understood that China Beidou Satellite Navigation System is a global satellite navigation system developed by China itself, and it is also the third mature satellite navigation system after GPS and GLONASS. Beidou Satellite Navigation System (BDS), US GPS, Russian GLONASS, and EU GALILEO are recognized suppliers of the United Nations Satellite Navigation Commission.
The Beidou satellite navigation system is composed of three parts: space segment, ground segment and user segment. It can provide high-precision, high-reliability positioning, navigation, and timing services for all types of users around the world and around the clock, and has short message communication Capability, has initially possessed regional navigation, positioning and timing capabilities, positioning accuracy of 10 meters, speed measurement accuracy of 0.2 meters / second, and timing accuracy of 10 nanoseconds.