| X射线脉冲星导航可见性分析 |
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| 引用本文： | 毛悦, 宋小勇, 冯来平. X射线脉冲星导航可见性分析[J]. 武汉大学学报 ( 信息科学版), 2009, 34(2): 222-225. |
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| 作者姓名： | 毛悦 宋小勇 冯来平 |
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| 作者单位： | 1信息工程大学测绘学院,郑州市陇海中路66号450052;2西安测绘研究所,西安市雁塔路中段1号,710054 |
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| 摘 要： | 概述了X射线脉冲星可见性分析需要考虑的影响因素,给出了脉冲星高度角以及第三天体遮挡的计算公式。根据导航需要,按照脉冲星优选准则,选取50颗X射线脉冲星进行了仿真计算。分析了可见脉冲星个数随位置、时间、高度的变化规律,单颗脉冲星在1 d时间内可见性的变化情况,以及日月对脉冲星的遮挡情况。
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| 关 键 词： | X射线脉冲星 银道坐标系 可见性 |
| 收稿时间： | 2008-12-20 |
| 修稿时间： | 2008-12-20 |
Visibility Analysis of X-ray Pulsar Navigation |
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| MAO Yue, SONG Xiaoyong, FENG Laiping. Visibility Analysis of X-ray Pulsar Navigation[J]. Geomatics and Information Science of Wuhan University, 2009, 34(2): 222-225. |
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| Authors: | MAO Yue SONG Xiao-yong FENG Lai-ping |
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| Affiliation: | 1Institute of Surveying and Mapping,Information Engineering University,66 Middle Longhai Road,Zhengzhou 450052,China;2Xi'an Research Institute of Surveying and Mapping,1 Middle Section,Yanta Road,Xi'an 710054,China |
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| Abstract: | The influent factors,which should be considered in the analysis of X-ray pulsar visibility,were summarized.The calculation formulas of pulsar elevation angle and the shelter from the three-body were also presented.According to the requirement of navigation,fifty X-ray pulsars were selected based on the rules of pulsar selection.The change of visible pulsar number with position,time,height were analyzed through calculations.The change of visibility of a single pulsar in a single day and the shelter from sun and moon were studied.Finally,conclusion is drawn. |
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| Keywords: | X-ray pulsar galactic coordinate system visibility |
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