The difference between manufacturers compare the Beidou satellite navigation system and GPS navigation

　　1. Covering range: Beidou navigation system is a regional navigation system covering China. The coverage is about 70 ° -140 ° east and 5 ° -55 ° north latitude. GPS is a global all-weather navigation system that can ensure that 6-9 satellites can be observed at the same time on the planet and at any time.

　　2. Number of satellites and rail characteristics: Beidou navigation systems set two global synchronous satellites on the earth equatorial plane, and the equatorial angle distance of the satellite is about 60 °. GPS is set up 24 satellites on the 6 rail planes. The orbital equatorial angle is 55 °, and the equatorial angle of the orbit surface is 60 °. The GPS navigation satellite track is aimed at synchronous orbit, 11 hours and 58 minutes around the earth.

　　3. Positioning principle: Beidou navigation system is active two -way ranging two -dimensional navigation, ground center control system solution, providing user three -dimensional positioning data. GPS is a passive pseudo -code one -way ranging three -dimensional navigation, which is independently solved by user equipment to solve its own three -dimensional positioning data. The working principle of the Beidou navigation system brings two aspects of the problem. One is that the user positioning loses the concealment of radio, which is very unfavorable in the military. On the other hand The price and power consumption are in an unfavorable position.

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