| 一类适用于各种轨道类型的导航卫星广播星历研究 |
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| 引用本文： | 朱俊,文援兰,廖瑛.一类适用于各种轨道类型的导航卫星广播星历研究[J].航天控制,2005,23(6):9-11. |
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| 作者姓名： | 朱俊 文援兰 廖瑛 |
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| 作者单位： | 国防科学技术大学,长沙,410073 |
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| 摘 要： | 导航卫星广播星历是卫星导航定位的基础,要求有较高的精度和实时性。GPS和GLONASS广播星历形式适合于某一类卫星轨道,但存在一定局限性。利用切比雪夫多项式拟合导航卫星轨道,拟合系数作为广播星历的参数发布,这是一种新的广播星历形式,可作为各种轨道类型的导航卫星的广播星历参数,而且具有精度高、计算速度快等特点。
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| 关 键 词： | 卫星导航 广播星历 GPS星历 GLONASS星历 切比雪夫多项式 |
| 文章编号： | 1006-3242(2005)06-0009-03 |
| 修稿时间： | 2005年7月11日 |
Research on the Broadcast Ephemeris Adapted to All Kinds of Orbits |
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| Zhu Jun,Wen Yuanlan,Liao Ying.Research on the Broadcast Ephemeris Adapted to All Kinds of Orbits[J].Aerospace Control,2005,23(6):9-11. |
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| Authors: | Zhu Jun Wen Yuanlan Liao Ying |
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| Institution: | Zhu Jun Wen Yuanlan Liao YingNational University of Defense Technology,Changsha 410073 |
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| Abstract: | The broadcast ephemeris,which is the basic of satellite navigation,must be precise and real time.The GPS ephemeris and GLONASS ephemeris adapt to some kind of the satellite orbits while they have some shortcoming.A new form of broadcast ephemeris of satellite is developed which adopts the Chebyshev polynomial to fit the orbit of navigation satellite and then the fitted coefficients are broadcasted as broadcast ephemeris.This ephemeris suits all kinds of orbits of navigation satellites,and the position and velocity of the satellites can be calculated more precisely,easily and quickly. |
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| Keywords: | Satellite navigation Broadcast ephemeris GPS ephemeris GLONASS ephemeris Chebyshev polynomial |
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