| LEO广播星历参数设计的无奇点根数法 |
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| 引用本文： | 王鼎蔚,杜兰,郑勇,宋世泽,范华.LEO广播星历参数设计的无奇点根数法[J].测绘科学技术学报,2017,34(1). |
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| 作者姓名： | 王鼎蔚 杜兰 郑勇 宋世泽 范华 |
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| 作者单位： | 1. 信息工程大学,河南 郑州 450001;北斗导航应用技术河南省协同创新中心,河南 郑州 450001;2. 郑州市公共交通总公司,河南 郑州,450000 |
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| 摘 要： | 针对LEO卫星的广播星历参数设计,在分析低地球轨道(LEO)卫星轨道根数变化特征的基础上,从第二类无奇点根数出发,对标准GPS广播星历的轨道及其摄动表征进行改造,提出一套专用于LEO卫星的23参数星历表示法,并推导了相应的用户卫星位置计算公式。拟合试验表明,20 min星历拟合的用户距离误差(URE)的均方根优于0.05 m。
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| 关 键 词： | LEO卫星 广播星历参数 无奇点根数 轨道变化特征 拟合精度 |
Parameter Design of LEO Broadcast Ephemeris Based on the Nonsingular Orbital Elements |
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| WANG Dingwei,DU Lan,ZHENG Yong,SONG Shize,FAN Hua.Parameter Design of LEO Broadcast Ephemeris Based on the Nonsingular Orbital Elements[J].Journal of Zhengzhou Institute of Surveying and Mapping,2017,34(1). |
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| Authors: | WANG Dingwei DU Lan ZHENG Yong SONG Shize FAN Hua |
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| Abstract: | Based on characteristics analysis of LEO satellite orbit elements,the representations of both the standard broadcast ephemerides' orbit and its perturbation were revised according to the second class of nonsingular orbital elements.A 23-parameter broadcast ephemeris was presented specifically for LEOs.The user satellite position computation formulas were derived correspondingly.Fit simulations show that the root of mean squares (RMS) of user range error (URE) with 20 min data set is better than 0.05 m. |
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| Keywords: | LEO satellite broadcast ephemeris parameter nonsingular orbital elements orbit characteristics fitting accuracy |
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