China Beidou Satellite Navigation System (BDS) is a global satellite navigation system developed by China. On June 23, 2020, the 55th satellite was launched, and the global network was completed. So far, the five permanent members of the United Nations have their own navigation system, which is the third mature satellite navigation system after GPS and GLONASS. Beidou Satellite Navigation System (BDS), GPS in the United States, GLONASS in Russia, and GALILEO in the European Union are the recognized suppliers of the United Nations Satellite Navigation Committee.

　　The Beidou satellite navigation system consists of three parts: the space segment, the ground segment and the user segment. The space segment consists of several geostationary orbit satellites, inclined geosynchronous orbit satellites and medium earth orbit satellites. It can provide high-precision and high-reliability positioning, navigation, and timing services for all kinds of users around the world, and it has the ability to communicate with short messages.

　　At the beginning of 2020, the new crown pneumonia epidemic broke out. In times of crisis, the Beidou system's line of fire assisted in the construction of the Huoshenshan and Leishenshan hospitals in Wuhan. By using Beidou's high-precision technology, most of the measurement work can be completed at one time, saving a lot of time for hospital construction, ensuring the rapid completion of the construction of the "main position" in the fight against the epidemic, and contributing Beidou's wisdom and strength to the fight against the epidemic.

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