| 卫星电视授时系统及精度估计 |
| |
| 引用本文： | 宋金安.卫星电视授时系统及精度估计[J].时间频率学报,1994(Z1). |
| |
| 作者姓名： | 宋金安 |
| |
| 作者单位： | 中国科学院陕西天文台 |
| |
| 基金项目： | 国家自然科学基金,中国科学院天文委员会天体力学专业委员资助 |
| |
| 摘 要： | 我国已建成短波、长波授时台，进行毫秒级、微秒级的时间服务．随着现代科技和经济的发展，上述方法已不能满足国家及国际交流的需要．本文提出卫星电视授时系统，同步卫星定位精度小于１１０ｍ，卫星授时精度为亚微秒。两原子钟利用卫星进行时刻同步，其精度与两原子钟的距离有关，相距３千多公里的两钟同步精度小于３５ｎｓ，相距数百公里的两原子钟同步精度小于２０ｎｓ
|
| 关 键 词： | 同步卫星，定轨，卫星授时，精度分析 |
Standard Time Dissemination via Satellite TV Channel and Precision Analysis |
| |
| Song JinAn.Standard Time Dissemination via Satellite TV Channel and Precision Analysis[J].Journal of Time and Frequency,1994(Z1). |
| |
| Authors: | Song JinAn |
| |
| Abstract: | The short wave and long wave radio stations have been established for time service in our country. But now, it does not meet the needs of national economical development. The satellite TV time dissemination system is proposed in this paper. The precision of determining position of satellite is about 110m.The precision of the time transfer is of the order of submicrosecond. The precision of the time synchronization via broadcastting satellite is depending on the distance between the two atomic clocks. If the distance between the two clocks is several hundred kilometers, then the precision of the time synchronization is less than 20us. |
| |
| Keywords: | Synchronization Satellite Determinate Orbit Satellite Time Dissemination Precision Analyses |
| 本文献已被 CNKI 等数据库收录！ |
