Timing for the Loran-C signal by Beidou satellite and error correction for the transmission time

The capability of positioning of Beidou/Loran-C integrated navigation system is restricted by the transmitting precision of Loran-C signal. In this paper, the wavelet shrinkage de-noising method of correction for the transmission time error of Loran-C signal, which is timed by the Beidou satellite, is discussed. Getting the random offset from the time difference, and then, adopting the soft-threshold function and the SUREShrink estimation in the de-noising. The results demonstrated that the transmission time error was decreased about 30 ns, and the performance of three dimension positioning was improved evidently through the method in the experiment.