In the late 0th century, China began to explore the development path of satellite navigation system suitable for national conditions, and gradually formed a three -step development strategy:

　　The first step, in 1994, launched the construction of the Beidou -1 system engineering; in 2000, the launch of two Earth Static track satellites was launched and began to provide services to our users.

　　In the second step, in 2004, the construction of the Beidou II system project was launched; at the end of 2012, 14 satellite launch group network was completed. Based on the technical system of Beidou II, the Beidou II system increases the passive positioning system to provide users with positioning, speed measuring, time -granting, wide -regional differential and short news communication services for users in the Asia -Pacific region.

　　The third step, in 2009, launched the construction of the Beidou III system; it is planned to provide basic services to the "Belt and Road" and neighboring countries along the "Belt and Road" in 2018; it is planned System to provide services for global users.

　　Beidou satellite navigation systems can provide high -precision, high reliability positioning, navigation and time -seeking services, which have the characteristics of combining navigation and communication. The Beidou system consists of three parts: space section, ground section and user section. With the continuous improvement of the construction and service capabilities of the Beidou system, related products have been widely used in the fields of transportation, marine fishery, hydrological monitoring, meteorological forecasting, surveying and mapping geographical information, disaster relief and disaster reduction, emergency search and rescue, etc. All aspects of life have injected new vitality into global economic and social development.

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