Ground local station timing system based on multiple Beidou satellites

Abstract

The invention relates to a ground local station timing system based on multiple Beidou satellites. The ground local station timing system comprises a ground local station which is connected with a first Beidou satellite, a second Beidou satellite and a third Beidou satellite through a wireless signal. The ground local station comprises a receiver, a high-stability atomic clock and a timing correction module. The high-stability atomic clock is wirelessly connected with the receiver. The receiver is connected with the timing correction module. Compared with the prior art, the ground local station timing system is advantageous in that simple structure and reasonable design are realized; navigation precision can be effectively improved; effects of factors of gravitational potential change caused by earth tide and the like in navigation through the satellite signal to the atomic clock can be prevented. The ground local station timing system has high practicability.

Description

technical field [0001] The invention relates to the field of positioning and navigation systems, in particular to a time service system for ground local area stations based on Beidou multi-star. Background technique [0002] At present, the Beidou satellite has become one of the main means of time and frequency transmission for navigation in my country. Due to the continuous deepening of multi-mode navigation system research, my country's Beidou navigation satellite network is gradually improving, and the combination of multiple global navigation satellite systems has become a hot field in the future. GLONASS satellites transmit the same pseudo-random noise code, and different satellites transmit at different frequencies to distinguish different satellites, that is, frequency division multiple access. Atomic clocks (atomic time and frequency standards) are the basic conditions for human scientific and technological activities. The improvement of the accuracy and precision o...

AI Technical Summary

Problems solved by technology

Based on the research of the space cold atomic clock on the International Space Station, in addition to the European Space Agency’s ACES (Atomic Clock Ensemble in Space) project, which is planned to be launched in 2013, the United States once had projects such as PARCS (Primary Atomic Reference Clock in Space) and RACE (Rubidium Atomic Clock Experiment), but These programs are currently on hold due to changes in U.S. space strategy, but a small amount of funding continues to support them

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