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全球定位系统是以人造卫星组网为基础的无线电导航定位系统。它是利用设置在地面或运动载体上的专用接收机,接收卫星发射的无线电信号,从而实现导航定位
Global Positioning System is a satellite navigation system based on satellite navigation system. It is the use of special receivers installed on the ground or on a moving carrier to receive the radio signals transmitted by the satellites to achieve navigation and positioning