Optimal Weighting Method for Reducing Digital Satellite TV Differential Timing Error

WANG Shanhe; HUA Yu; XIANG Yu; HUANG Changjiang; GAO Yuanyuan; ZHAO Xian

doi:10.1049/cje.2020.01.010

Volume 29 Issue 2

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WANG Shanhe, HUA Yu, XIANG Yu, et al., “Optimal Weighting Method for Reducing Digital Satellite TV Differential Timing Error,” Chinese Journal of Electronics, vol. 29, no. 2, pp. 322-326, 2020, doi: 10.1049/cje.2020.01.010

Citation:

WANG Shanhe, HUA Yu, XIANG Yu, et al., “Optimal Weighting Method for Reducing Digital Satellite TV Differential Timing Error,” Chinese Journal of Electronics, vol. 29, no. 2, pp. 322-326, 2020, doi: 10.1049/cje.2020.01.010

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Optimal Weighting Method for Reducing Digital Satellite TV Differential Timing Error

doi: 10.1049/cje.2020.01.010

1.
National Time Service Center, Chinese Academy of Sciences, Xi'an 710600, China;
2.
University of Chinese Academy of Sciences, Beijing 100049, China

Received Date: 2019-03-27
Rev Recd Date: 2019-12-09
Publish Date: 2020-03-10

Abstract

Abstract

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.
- Digital satellite TV differential timing (DSTVDT),
- Satellite ephemeris error,
- Timing accuracy,
- Optimal weighting method

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References(12)

References

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