| 差分X射线脉冲星自主导航研究 |
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| 引用本文： | 邓新坪,郑建华,高东.差分X射线脉冲星自主导航研究[J].北京理工大学学报,2013,33(9):896-900. |
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| 作者姓名： | 邓新坪 郑建华 高东 |
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| 作者单位： | 中国科学院 国家空间科学中心,北京100190;中国科学院大学,北京100190;中国科学院 国家空间科学中心,北京,100190 |
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| 基金项目： | 中国科学院空间科学预研项目(XDA04074300) |
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| 摘 要： | X射线脉冲星自主导航(XNAV)中,时间测量与转换误差会对导航精度产生不可忽视的影响. 本文在对XNAV算法研究的基础上,进一步研究了利用差分抑制时间测量与转换误差对导航精度的影响. 研究结果表明:双差能有效抑制时间测量误差对导航精度的影响,但是无法抑制时间转换误差对导航精度的影响;三差既能有效抑制时间测量误差对导航精度的影响,也能有效抑制时间转换误差对导航精度的影响.
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| 关 键 词： | X射线脉冲星导航 双差 三差 导航精度 |
| 收稿时间： | 2012/3/15 0:00:00 |
Study of Difference X-Ray Pulsar Navigation |
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| DENG Xin-ping,ZHENG Jian-hua and GAO Dong.Study of Difference X-Ray Pulsar Navigation[J].Journal of Beijing Institute of Technology(Natural Science Edition),2013,33(9):896-900. |
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| Authors: | DENG Xin-ping ZHENG Jian-hua and GAO Dong |
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| Institution: | 1.National Space Science Center, Chinese Academy of Sciences, Beijing 100190, China;University of Chinese Academy of Sciences, Beijing 100190, China2.National Space Science Center, Chinese Academy of Sciences, Beijing 100190, China |
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| Abstract: | Because the essence of the traditional X-ray pulsar navigation (XNAV) is to measure and convert the time accurately, the errors of time measurement and conversion can affect the navigation precision. In the paper, measurement difference is adopted to reduce the effect of time measurement and conversion errors to navigation precision. Results demonstrate that double differences can reduce the effect of time measurement error to navigation precision, but can not reduce the effect of time conversion error to navigation precision, meanwhile, triple differences can reduce both the effect of time measurement and conversion errors to navigation precision. The research results are referable to the application of XNAV. |
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| Keywords: | X-ray pulsar navigation double difference triple difference navigation precision |
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