Scholarlink

<p>To address the issue of inadequate long-term stability of the BeiDou-3 Navigation Satellite System (BDS-3) onboard clock, this paper presents a space-based autonomous time and frequency steering approach. This approach leverages existing conditions and available resources to synchronize the BDS-3 onboard clock with the space station’s frequency reference, incorporating a noise-adaptive digital compensation interpolation algorithm and an onboard clock steering technique based on the space station’s frequency reference. The experimental results obtained by combining simulation and measured data indicate that the one-day stability of the BDS-3 onboard clock improves from 7.24E-15 to 1.60E-15 after applying the method, and the ten-day stability improves from 9.05E-15 to 8.33E-17. These results demonstrate a significant enhancement in the long-term stability of the BDS onboard clock and a reduction in its dependence on the ground station. The proposed method offers a viable approach for the establishment and autonomous maintenance of space-based time and frequency references.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

A space station-based autonomous calibration method for time and frequency of the BDS onboard clock

  • 期刊论文

  • 发表日期：

    2026年1月22日

查看全文
  • Jiachen Wang,
  • Ya Liu,
  • Shaohua Shi,
  • Xiaohui Li,
  • Duosheng Fan,
  • Bo Xiao,
  • Yinhua Liu,
  • Songyue Han,
  • Haoyun Zhang,
  • Shuaihe Gao

摘要

To address the issue of inadequate long-term stability of the BeiDou-3 Navigation Satellite System (BDS-3) onboard clock, this paper presents a space-based autonomous time and frequency steering approach. This approach leverages existing conditions and available resources to synchronize the BDS-3 onboard clock with the space station’s frequency reference, incorporating a noise-adaptive digital compensation interpolation algorithm and an onboard clock steering technique based on the space station’s frequency reference. The experimental results obtained by combining simulation and measured data indicate that the one-day stability of the BDS-3 onboard clock improves from 7.24E-15 to 1.60E-15 after applying the method, and the ten-day stability improves from 9.05E-15 to 8.33E-17. These results demonstrate a significant enhancement in the long-term stability of the BDS onboard clock and a reduction in its dependence on the ground station. The proposed method offers a viable approach for the establishment and autonomous maintenance of space-based time and frequency references.