| Study of an optimal algorithm for combing TWSTFT and GPS CV comparisons | |
| Li Gun; Hu Yong hui; Zhong Chong-xia; Zhou Wei | |
| 2006 | |
| 会议名称 | IEEE International Frequency Control Symposium and Exposition |
| 会议录名称 | Proceedings of the 2006 IEEE International Frequency Control Symposium and Exposition, Vols 1 and 2 |
| 会议日期 | JUN 04-07, 2006 |
| 会议地点 | Miami, FL |
| 产权排序 | 1 |
| ISBN | 978-1-4244-0073-7 |
| 摘要 | Two-Way Satellite Time and Frequency Transfer (TWSTFT) and GPS C/A code based common view (GPS CV) are the two primary methods for international time and frequency transfer. TWSTFT technique has been made significant improvement in the last several years, and demonstrated to show a higher precision of T&F transfer than that of GPS CV. So it has been utilized for in the computation of TAI (International Atomic Time) and the GPS CV link is regarded as a back up if the links have both TWSTFT and GPS CV time transfer links. Actually, the TWSTFT is unavailable frequently for some unknown reasons or failure of instrument. More Important, in some links, the comparison result of GPS CV has valuable information for in the calculation of TAI and UTC (Coordinated Universal Time). Considering these two cases, we have been used GPS CV C/A code and TWSTFT observations in attempt to form a more stable and reliable composite time transfer links. In this study we have focused on the unavailability when the system has malfunction or abnormality, in this case, the GPS CV data will be used in TAI computation which will cause a systematic error that should be deduct in some links. Finally, to avoid the above mentioned shortcomings, a new optimal algorithm for combining the two types time transfer data is given, the details of the optimal algorithm has been presented in this paper. A more stable and reliable time comparison result has been achieved in time comparison between some national time laboratories. The UTC(USNO)-UTC(PTB) and the UTC(ROA)-UTC(PTB) are given as a example. |
| 部门归属 | 时间用户系统研究室 |
| 主办者 | IEEE |
| 收录类别 | CPCI |
| 语种 | 英语 |
| 文献类型 | 会议论文 |
| 条目标识符 | http://210.72.145.45/handle/361003/5258 |
| 专题 | 时间用户系统研究室 |
| 推荐引用方式 GB/T 7714 | Li Gun,Hu Yong hui,Zhong Chong-xia,et al. Study of an optimal algorithm for combing TWSTFT and GPS CV comparisons[C],2006. |
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