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| 脉冲星导航中最优脉冲星组合选取方法 | |
| 引用本文： | 褚永辉,王大轶,黄翔宇. 脉冲星导航中最优脉冲星组合选取方法[J]. 中国空间科学技术, 2011, 31(5). DOI: 10.3780/j.issn.1000-758X.2011.05.009 |
| 作者姓名： | 褚永辉 王大轶 黄翔宇 |
| 作者单位： | 北京控制工程研究所,北京100190;空间智能控制技术重点实验室,北京100190 |
| 基金项目： | 国家863计划，基础科研 |
| 摘 要： | 分析了X射线脉冲星导航原理,发现脉冲星的位置和脉冲到达时间(Time of Arrival,TOA)的测量误差直接影响导航精度.为优选导航脉冲星组合,在误差协方差分析的基础上,提出了一种导航脉冲星组合优选方法.该方法分别定义了优选指标位置精度因子(Positioning Dilution of Precision,PDOP)和脉冲星优选指标(Pulsars Select Criteria,PSC),不仅考虑了脉冲星空间位置分布,还考虑了测量噪声差异对导航误差的影响.最后以25颗信号品质较好的脉冲星为例,仿真验证了所提方法的有效性. |
| 关 键 词： | X射线脉冲星 位置精度因子 测量噪声 脉冲星导航 |
Selection of the Beacon Pulsars in Pulsars Navigation |
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| Chu Yonghui,Wang Dayi,Huang Xiangyu. Selection of the Beacon Pulsars in Pulsars Navigation[J]. Chinese Space Science and Technology, 2011, 31(5). DOI: 10.3780/j.issn.1000-758X.2011.05.009 | |
| Authors: | Chu Yonghui Wang Dayi Huang Xiangyu |
| Affiliation: | Chu Yonghui1,2 Wang Dayi1,2 Huang Xiangyu1,2(1 Beijing Institute of Control Engineering,Beijing 100190)(2 Science and Technology on Space Intelligent Control Laboratory,Beijing 100190) |
| Abstract: | The analysis of X-ray pulsars principle shows that the beacon pulsars position and measurement error directly affect the navigation performance.To select the best beacon pulsars group,a selection method was developed based on the error covariance analysis.This method defines the criteria of PDOP(Positioning Dilution of Precision)and PSC(Pulsars Select Criteria),considering the effect of pulsars distribution and the measurement errors.Taking the circle phase of the Mars as an example,the method is validated ... |
| Keywords: | X-ray pulsars Positioning dilution of precision Measurement error Pulsars navigation |
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