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. doi: 10.1049/cje.2020.01.010

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.
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