WANG Shanhe, HUA Yu, XIANG Yu, HUANG Changjiang, GAO Yuanyuan, ZHAO Xian. Optimal Weighting Method for Reducing Digital Satellite TV Differential Timing Error[J]. Chinese Journal of Electronics, 2020, 29(2): 322-326. doi: 10.1049/cje.2020.01.010
 Citation: WANG Shanhe, HUA Yu, XIANG Yu, HUANG Changjiang, GAO Yuanyuan, ZHAO Xian. Optimal Weighting Method for Reducing Digital Satellite TV Differential Timing Error[J]. Chinese Journal of Electronics, 2020, 29(2): 322-326.

# Optimal Weighting Method for Reducing Digital Satellite TV Differential Timing Error

##### doi: 10.1049/cje.2020.01.010
• Received Date: 2019-03-27
• Rev Recd Date: 2019-12-09
• Publish Date: 2020-03-10
• We illustrate the principle of Digital satellite TV differential timing (DSTVDT) and propose an optimal weighting method that reduces the timing error introduced by satellite ephemeris error. A mathematical formula for the timing error introduced by satellite ephemeris error is derived and analyzed. On the basis of the derived formula, the proposed optimal weighting method based on multi-base stations is presented. The results of data simulation and experiments show that when the proposed method is applied, for a satellite ephemeris error of 10km, the ephemeris-introduced timing error is less than 10ns, which is important for improving accuracy and stability of the timing system.
•  K.X. Song, “Study on the timing technology with signal of satellite digital television broadcasting”, Ph.D.Thesis, National Time Service Center, Chinese Academy of Sciences, China, 2011. (in Chinese) Y. Xiang, Y. Hua, L.S. Xu, et al., “A method of high precision time transfer based on DVB-S”, Joint European Frequency and Time Forum & International Frequency Control Symposium, Prague, Czech Republic, pp.823-826, 2013. Y. Xiang, “Digital satellite TV and key techniques for the precision time service excogitation”, Ph.D.Thesis, National Time Service Center, Chinese Academy of Sciences, China, 2015. (in Chinese) S.H. Wang, Y. Xiang, Y. Hua, et al., “Error analysis of digital satellite TV differential timing”, Forum on Cooperation Positioning and Service, Harbin, China, pp.1-5, 2017. S.H. Wang, Y. Xiang, Y. Hua, et al., “Research of digital satellite TV differential timing method”, IEEE International Frequency Control Symposium, Olympic Valley, California, USA, pp.265-268, 2018. M. Zhang, “Research on high-precision local multi reference clock synthesis algorithm based on BP neural network”, Acta Electronica Sinica, Vol.47, No.8, pp.1618-1625, 2019.(in Chinese) H. Landau, U. Vollath and X.M. Chen, “Virtual reference station systems”, Journal of Global Positioning Systems, Vol.1, No.2, pp.137-143, 2002. G. Fotopoulos and M.E. Cannon, “An overview of multireference station methods for cm-level positioning”, GPS Solutions, Vol.4, No.3, pp.1-10, 2001. G. Retscher, “Accuracy performance of virtual reference station (VRS) networks”, Journal of Global Positioning Systems, Vol.1, No.1, pp.40-47, 2002. B.L. Chen, Optimization Theory and Algorithm, Second edition, Tsinghua University Press, Beijing, China, pp.388-426, 2005. (in Chinese) J.Y. Chen, “Research on time transfer method of virtual common-view station based on communication satellites”, Ph.D.Thesis, National Time Service Center, Chinese Academy of Sciences, China, 2018. (in Chinese) B. Hu, H.J. Peng and Z.X. Sun, “LANDMARC localization algorithm based on weight optimization”, Chinese Journal of Electronics, Vol.27, No.6, pp.1291-1296, 2018.

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###### 通讯作者: 陈斌, bchen63@163.com
• 1.

沈阳化工大学材料科学与工程学院 沈阳 110142

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