Browse > Article
http://dx.doi.org/10.6109/jkiice.2022.26.3.456

Deep Learning based Time Offset Estimation in GPS Time Transfer Measurement Data  

Yu, Dong-Hui (Department of Software, Catholic University of Pusan)
Kim, Min-Ho (Department of Software, Catholic University of Pusan)
Abstract
In this paper, we introduce a method of predicting time offset by applying LSTM, a deep learning model, to a precision time comparison technique based on measurement data extracted from code signals transmitted from GPS satellites to determine Universal Coordinated Time (UTC). First, we introduce a process of extracting time information from code signals received from a GPS satellite on a daily basis and constructing a daily time offset into one time series data. To apply the deep learning model to the constructed time offset time series data, LSTM, one of the recurrent neural networks, was applied to predict the time offset of a GPS satellite. Through this study, the possibility of time offset prediction by applying deep learning in the field of GNSS precise time transfer was confirmed.
Keywords
GNSS precise time transfer; LSTM; Deep learning; Time offset; UTC;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 Y. K. Lee, S. H. Yang, H. S. Lee, J. K. Lee, and S. W. Hwang, "Outlier Detection Method for Time Synchronization," Journal of Positioning, Navigation, and Timing, vol. 9, no. 4, pp. 397-403, Dec. 2020.   DOI
2 W. Fang, J. Jiang, S. Lu, Y. Gong, Y. Tao, Y. Tang, P. Yan, H. Luo, and J. Liu, "A LSTM Algorithm Estimating Pseudo Measurements for Aiding INS during GNSS Signal Outrages," Remote Sensing, vol. 12, iss. 2, 2020.
3 D. W. Allan and C. Thomas, "Technical Directives for Standardization of GPS Time Receiver Software," Metrologia, vol. 31, no. 1, 1994.
4 G. M. Lee, Artificial Intelligence, SangNeung Pub., pp. 317-334, 2019.
5 G. M. Lee, Artificial Ingelligence, Sangneung Pub, ch. 5, pp. 254-385, 2019.
6 Y. W. Lu, C. Y. Hsu, and K. C. Huang, "An autoencoder Gated Recurrent Unit for Remaining Useful Life Prediction," Processes, vol. 8, iss.9, 2020.
7 J. Azoubib and W. Lewandowski, "CGGTTS GPS/GLONASS Data format version 02," 7th CGGTTS meeting, Nov. 1998.
8 G. Petit and E. F. Arias, "Use of IGS products in TAI applications," Journal of Geodesy, vol. 83, no. 3-4, pp. 327-334, Mar. 2009.   DOI