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The Theory of Navigation System

Mar 22, 2018



Navigation: a way to guide aircraft or ships from one point to another along certain routes.There are two types :(1) autonomous navigation.Navigation with aircraft or ship, with inertial navigation, Doppler navigation and celestial navigation, etc.(2) non-autonomous navigation.Navigation with aircraft or ship equipment with related ground or air equipment, radio navigation, satellite navigation.In the military, it is necessary to complete the tasks of weapon projection, reconnaissance, patrol, anti-submarine and rescue.


On satellite navigation, there are receiver equipment instructions, Doppler transmitter, phase modulation encoder atomic clocks and etc. It has to do with ground control station and users can receive navigation equipment of satellite navigation system.The effect is to send a navigation signal to the ground at a fixed frequency at a fixed frequency, telling the ground user that "it" is in the sky and the sending time .The ground user receives the data with the corresponding radio receiving device and the timer. After automatic processing, it can determine his accurate position.Its advantage is that it overcomes the disadvantages of celestial navigation on meteorological conditions and radio navigation in the distance range error, and provides users with the accurate navigation data all the time.

 

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