Two Steps Time Synchronizing Method for AutoNav with Crosslink Ranging Measurement

To maintain the positioning and navigation function of our navigation system,the crosslink ranging measurement is used to calculate the ephemeris and clock error. The simulating method of clock error is presented. A two-step time synchronizing algorithm is introduced. The validation of the algorithm was verified by the simulating data. The results show that the two-step algorithm is slightly better than one-step algorithm.