The full English name of GPS is Navigation Satellite Timing And Ranging Global Positioning System, abbreviated as GPS, sometimes also known as NAVSTAR GPS, which means Navigation Satellite Timing And Ranging Global Positioning System, or simply Global Positioning System.

　　Before implementing GPS positioning, some preparatory work needs to be done. The first step is to establish a receiving station to receive and process satellite signals. Secondly, it is necessary to establish an antenna system for communication with GPS satellites. Finally, precise positioning is required, which requires the use of differential GPS technology to compare the time difference of satellite signals between the reference station and the mobile station to achieve more accurate positioning.

　　Overall, GPS is a highly complex technology that involves knowledge in multiple fields, including radio technology, astronomy, geography, control science, and computer science. However, with the advancement of technology and the popularization of equipment, the use of GPS has become increasingly common and widely used in various fields, such as transportation, military, aviation, and security.

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