| 一种同步卫星授时方法的再探讨 |
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| 引用本文： | 徐劲.一种同步卫星授时方法的再探讨[J].空间科学学报,2000,20(2):165-171. |
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| 作者姓名： | 徐劲 |
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| 作者单位： | 中国科学院紫金山天文台, 南京 210008 |
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| 摘 要： | 通过对原有测轨和预报方案的改善,对共视时差法时刻比对的进一步研究.实验结果表明: 采用现在的测轨和预报方案,时刻比对的事后处理精度与以前相当,优于1,但预报精度比以前有了较大提高,对卫星轨道预报1星期,相应的时刻比对精度也基本可保持在1μs以内.
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| 关 键 词： | 同步卫星 轨道确定 时刻比对 |
| 收稿时间： | 1998-10-13 |
| 修稿时间： | 1998年10月13 |
SOME FURTHER DISCUSSIONS FOR A METHOD OF TIME SERVICE WITH SYNCHRONOUS SATELLITE |
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| XU Jin.SOME FURTHER DISCUSSIONS FOR A METHOD OF TIME SERVICE WITH SYNCHRONOUS SATELLITE[J].Chinese Journal of Space Science,2000,20(2):165-171. |
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| Authors: | XU Jin |
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| Affiliation: | Purple Mountain Observatory, The Chinese Academy of Sciences, Nanjing 210008 |
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| Abstract: | The time comparison with by means of synchronous satellite is a commonmethod, which has the advalltages of low cost, simple operation and wide scopeof service. The key technique for raising the precision of time comparison withthe method is to determine and predict the orbit of synchronous satellite moreaccurately Based on the improvement of the previous program for orbit determination and prediction, further in vestigations concerning time comparison using thismethod is conducted in this paPer. The experimental results show that the post-processing precision of time comparison obtained with the new program is aboutthe same as that obtained with the previous program, which is better than 1 ps,but the pre-processing precision has been raised greatly as compared to that olytained previously With the new program of orbit determination and prediction, thepre-processing precision of time comparison can keep better than 1 ps in one week. |
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| Keywords: | Synchronous satellite Orbit determination Time comparison |
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