source:Industry News release time:2023-04-19 Hits: Popular:realtime gps tracker online
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????GPS refers to a radio navigation positioning system that uses GPS satellites to provide information such as three -dimensional positions and three -dimensional speeds all over the weather around the world. The predecessor of GPS was a TRANSIT satellite positioning system developed by the US military in 1958. It was officially put into use in 1964. The system works with 5-6 satellites. And it is impossible to give high information, and it is not satisfactory in terms of positioning accuracy. However, the Ziwuyi satellite positioning system allowed the R & D department to achieve preliminary experience in the positioning of satellite and verify the feasibility of the positioning of the satellite system, and paved the development of the development of GPS. Due to the huge superiority in navigation and the huge defects of submarines and ship navigation in the navigation system, the US Land, Sea, Air Force and civilian departments all feel an urgent need for a new satellite navigation system.
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