What is the working principle of EU Galileo satellite positioning system? Urgent, urgent, online, etc.

Galileo system has the following characteristics:

(1) system is not directly involved in the process of development and establishment. The system is a commercial civil satellite navigation and positioning system, and non-military users are less affected by political factors when using the system.

(2) In view of the defects of GPS in reliability (users may face system failures and errors without any warning), Galileo system has been reformed in the structural design of the system to ensure the reliability of the system to the greatest extent and provide complete information of the system to designated users in time.

(3) Take measures to further improve the accuracy, such as using atomic clocks with better performance on satellites; The number of ground monitoring stations is about 30, with more and better distribution; The receiver adopts noise suppression technology, users can obtain better navigation and positioning accuracy, and the service surface and application field of the system are wider.

(4) Independent and compatible with GPS, with interoperability. Mutual independence can prevent or reduce the possibility of simultaneous failure of two systems. Galileo adopted an independent satellite constellation and ground control system, and adopted different signal design schemes and basically independent signal frequencies. Compatibility means that neither system will affect the independent work of the other and interfere with the normal operation of the other. Interoperability means that one receiver can conveniently use two navigation systems at the same time to improve the accuracy, availability and integrity of navigation and positioning.