| 考虑脉冲星角位置误差修正的XNAV算法研究 |
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| 引用本文： | 邓新坪,郑建华,高东.考虑脉冲星角位置误差修正的XNAV算法研究[J].空间科学学报,2012,32(3):435-439. |
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| 作者姓名： | 邓新坪 郑建华 高东 |
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| 作者单位： | 1. 中国科学院空间科学与应用研究中心,北京100190／中国科学院研究生院,北京100049
2. 中国科学院空间科学与应用研究中心,北京,100190 |
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| 基金项目： | 中国科学院空间科学预先研究项目资助 |
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| 摘 要： | 航天器X射线脉冲星自主导航(XNAV)依赖于精确的时间测量与转换,而脉冲星角位置误差会影响时间转换精度从而对导航精度产生不可忽视的影响.本文在对XNAV算法的研究中,采用了真实的脉冲星角位置误差.通过将脉冲星角位置加入滤波器状态进行滤波处理来降低脉冲星角位置误差,从而降低其对导航精度的影响.仿真结果表明,该方法能够有效抑制脉冲星角位置误差对导航精度的影响,保证了导航精度,研究结果对于XNAV的工程应用具有一定理论参考价值.
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| 关 键 词： | X射线脉冲星导航 脉冲星角位置误差 导航精度 |
Research on XNAV Algorithm With Correction of Pulsars Position Error |
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| DENG Xinping,ZHENG Jianhua,GAO Dong.Research on XNAV Algorithm With Correction of Pulsars Position Error[J].Chinese Journal of Space Science,2012,32(3):435-439. |
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| Authors: | DENG Xinping ZHENG Jianhua GAO Dong |
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| Institution: | 1(Center for Space Science and Applied Research,Chinese Academy of Sciences,Beijing 100190) 2(Graduate University of Chinese Academy of Sciences,Beijing 100049) |
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| Abstract: | The essential of the X-ray pulsar navigation(XNAV) is the accurate measurement and transfer of time.Pulsars position error is one of the most important factors affecting the precision of time transfer,so it is one of the most important factors which affect the precision of XNAV. By combining pulsars position with spacecraft position and velocity,a new navigation algorithm is proposed.Results show that the effect of the pulsars position error in XNAV is well dealt by this algorithm,so the new algorithm is referable to the application of XNAV. |
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| Keywords: | X-Ray pulsar navigation Pulsars position error Navigation precision |
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