Research on the Technology of Calibration of Satellite Constellation Crosslink
The method of dual-way pseudo ranging is used in navigation constellation crosslink to implement precise orbit determination and time synchronization. The accuracy of dual-way pseudo ranging is directly influenced by delay variation in transceiver. Based on the illustration of the conception and estimating model of delay, a real-time on-line closed loop calibration method of transceiver absolute delay is advanced. The experiment shows that the accuracy of this method is better than 0.3 ns.
KeywordsTime Delay Time Synchronization Precise Orbit Determination Satellite Constellation Radio Frequency Signal
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