GPS GLOABAL POSITIONG SYSTEM, which is built by the United States. It is mainly divided into three major blocks, ground control stations, satellites flying in the sky, and receiving machines we ta
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GPS GLOABAL POSITIONG SYSTEM, which is built by the United States. It is mainly divided into three major blocks, ground control stations, satellites flying in the sky, and receiving machines we take in our hands.
Let's talk about the device first. The satellite is prepared by the United States. As for the main control station, of course, it is in the local home, in Colorado. Three ground antennas, five monitoring stations, are distributed worldwide. It is mainly to collect data, calculate navigation information, diagnose system status, and dispatch satellites. In the sky, there are 27 satellites, 20,200 kilometers from the ground. There are 24 satellites running and 3 spares. These satellites have updated the five models of three generations. Satellite launch two signals: L1 and L2. L1: 1575.42MHz, L2: 1227.60MHz. The clock on the satellite uses the 的 atomic clock or 铷 atomic clock, and plans to use the hydrogen atom clock in the future. In your hand, it is the receiver. Large and small, with a variety of attitudes. Common handheld machine receiving L1 signals, as well as dual -frequency receiving machines for precision positioning.
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