Beidou satellite and GPS satellite are representatives of satellite navigation systems, but they have some differences. The main service targets of Beidou satellite are China and neighboring countries, while GPS satellite services cover the world. In addition, Beidou satellites have dual-use functions for both military and civilian use, while GPS is more commonly used in civilian fields. In addition, the navigation system of Beidou satellite also supports other functions, such as meteorology, geology, ocean, etc., while GPS satellites mainly serve aviation, rail transit, autonomous driving and other fields.

　　The technology of GPS is very mature, but there are also some shortcomings. In addition to the signal being easily cut off by the United States, it is also very easy to be interfered with. Not to mention a few military powers, even Middle Eastern countries like Iran can easily block the US GPS signal, causing related ships and planes to get lost. The current combat system of the US military relies heavily on satellite navigation systems, especially the US Tomahawk cruise missile, It is even more necessary to use GPS to achieve precise guidance.

　　Compared with GPS, the BeiDou system has many obvious advantages. With the advantage of latecomers, the positioning accuracy of the BeiDou system is significantly better than GPS, and it also has richer functions. Previously, if fishing or ocean going vessels were to go out to sea, they often needed to be equipped with maritime telephones and GPS terminals for safety, and the cost of these devices was very expensive, which ordinary fishermen could not afford. However, using BeiDou terminals is different, A Beidou device can simultaneously meet both positioning and communication functions, and the procurement cost is also very cheap, which fishermen are willing to use.

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