| 基于QTM的导航星库划分方法 |
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| 引用本文： | 赵启坤,严小军.基于QTM的导航星库划分方法[J].导航与控制,2016(6):81-87. |
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| 作者姓名： | 赵启坤 严小军 |
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| 作者单位： | 北京航天控制仪器研究所,北京,100039 |
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| 摘 要： | 为了提高星敏感器观测星的检索速度,提出了一种基于球面四元三角网(Quaternary Triangular Mesh,QTM)的导航星库划分方法.该方法首先利用天球的内接正八面体把全天球划分成8个子天区,然后在每个子天区中进行与经纬度相关的剖分和编码,最后扫描恒星星表,把每颗导航星信息划归到相应的子天区内存储.利用此星库进行的局部天球星图识别仿真实验表明该星库具有很高的检索效率.
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| 关 键 词： | 星敏感器 导航星星库 球面四元三角网 星图识别 |
A Method for Guide Star Catalog Partition Based on QTM |
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| ZHAO Qi-kun and YAN Xiao-jun.A Method for Guide Star Catalog Partition Based on QTM[J].Navigation and Control,2016(6):81-87. |
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| Authors: | ZHAO Qi-kun and YAN Xiao-jun |
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| Institution: | Beijing Institute of Aerospace Control Devices;Beijing Institute of Aerospace Control Devices |
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| Abstract: | In order to improve the efficiency of star sensor during retrieving the guide star, a method for star catalog partition which based on quaternary triangular mesh was proposed. The approach first utilizes the regular inscribed regular octahedron in the celestial sphere and divided the sphere into eight sub regions, then split and encoded in each sub regions associated with the latitude and longitude, finally scanning the guide star database, each navigation information was storage in the corresponding sub region. The star identification used this star catalog shows that the designed star catalog has high retrieval efficiency |
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| Keywords: | star sensor guide star catalog quaternary triangular mesh(QTM) star identification |
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