GPS was originally established to provide precise positioning for the military, and it is still controlled by the US military to this day. Military GPS products are mainly used to determine and track the coordinates of soldiers and equipment traveling in the field, provide navigation information for military ships in the sea, and provide location and navigation information for military aircraft. The application of GPS systems has become very widespread. We can use GPS signals to guide navigation missiles in sea, air, and land, and to transmit precise positioning time and measure speed in geodetic and engineering surveys. In the field of surveying and mapping, GPS satellite positioning technology has been used to establish a high-precision national geodetic Geodetic control network to measure the global geodynamic parameters; It is used to establish land marine geodetic Geodetic datum for high-precision island land joint survey and marine mapping; Used to monitor the movement status of the Earth's plates and crustal deformation; The engineering survey has become the main means to establish the urban and Control network. The rapid mapping of aerial photography with only a small amount of ground control or no ground control using camera positions for determining the instant of aerospace photography has led to a technological revolution in geographic information systems and global environmental remote sensing monitoring.

　　Many commercial and government agencies also use GPS devices to track the location of their vehicles, which typically requires the use of wireless communication technology. Some GPS receivers integrate radios, wireless phones and mobile data terminals to meet the needs of Fleet management. Due to the emergence of diversified spatial resource environments, systems such as GPSGLONASSINMARSAT have navigation and positioning functions, forming a diversified spatial resource environment. This diverse spatial resource environment has led to a common strategy among the international community, which is to make full use of existing systems and actively prepare for the establishment of a private GNSS system. Only by around 2010, when the GNSS pure private system is built globally, can it fundamentally break away from dependence on a single system and form an internationally shared and secure resource environment. The world can only enter the highest application realm of using satellite navigation as a single navigation method. This international civilian strategy, in turn, has had an impact and forced the United States to make more open adjustments to its GPS usage policy. In short, the establishment of a diversified spatial resource environment has created an unprecedented and favorable international environment for the development and application of GPS.

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