Abstract: Satellite navigation has become increasingly important in the field of national defense and national economy, and its services such as positioning, navigation and timing have gradually become familiar and dependent. With the development of Beidou satellite navigation system in the field of mobile communication, the related products have been widely used in transportation, marine fisheries, hydrological monitoring, weather forecasting, surveying and mapping geographic information, forest fire prevention, communication time system, power dispatching, disaster relief and
disaster reduction, The areas of emergency search and rescue have gradually penetrated into all aspects of human society production and people’s lives, injecting new vitality into global economic and social development. The construction of Beidou satellite navigation system has great and special significance for safeguarding national security, promoting economic and social development, and improving China’s international status.

Key words: satellite navigation, Beidou, mobile communication