卫星轨道参数对LEO-LEO掩星事件切点水平漂移影响的仿真研究
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摘要
对24小时内LEO-LEO掩星事件进行仿真,分析掩星切点水平漂移的特性。研究结果表明,当卫星轨道参数满足倾角互补、升交点赤经之差为180°、卫星轨道高度接近这三个条件时,掩星切点水平漂移较小;一旦偏离这些条件,掩星切点水平漂移将会增大。文中还综合讨论了卫星轨道参数对掩星数量、分布、切点水平漂移、持续时间、相对角速度等的影响,这些分析结果对于提高LEO-LEO掩星数据反演的可靠性和卫星轨道设计具有较高的参考价值。
In this paper LEO-LEO occultation events in 24 hours are simulated. By analyzing the characters of the horizontal drift of tangent point in LEO-LEO occultation events, we find that when the following three conditions are met, which are respectively that the sum of orbital inclinations is 180°, the difference of Right Ascension of Ascending Nodes(RAAN) is 180°, and the satellites orbit altitudes are close to each other, the horizontal drift of tangent point is shorter than the other cases. We also obtain some comprehensive conclusions about the impacts of satellite orbit parameters on the number, distribution, horizontal drift of tangent point, time duration and relative angular velocity of LEO-LEO occultation events, which provide the valuable reference for the LEO-LEO occultation data inversion and orbit design.
In this paper LEO-LEO occultation events in 24 hours are simulated. By analyzing the characters of the horizontal drift of tangent point in LEO-LEO occultation events, we find that when the following three conditions are met, which are respectively that the sum of orbital inclinations is 180°, the difference of Right Ascension of Ascending Nodes(RAAN) is 180°, and the satellites orbit altitudes are close to each other, the horizontal drift of tangent point is shorter than the other cases. We also obtain some comprehensive conclusions about the impacts of satellite orbit parameters on the number, distribution, horizontal drift of tangent point, time duration and relative angular velocity of LEO-LEO occultation events, which provide the valuable reference for the LEO-LEO occultation data inversion and orbit design.
引文
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[8]杜晓勇,符养,薛震刚,等.卫星轨道参数对LEO-LEO掩星事件数量及分布影响的模拟研究[J].地球物理学报,2007,50(5):1289–1297.Du Xiaoyong,Fu Yang,Xue Zhengang,et al.Simulation of the Impacts of Satellite Orbit Parameters on the Number and Distribution of LEO-LEO Occultation Events[J].Chinese Journal of Geophysics,2007,50(5):1289–1297.
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[10]赵世军,孙学金,朱有成,等.LEO卫星轨道参数对GPS掩星数量和分布的影响[J].解放军理工大学学报(自然科学版),2002,3(2):85–89.Zhao Shijun,Sun Xuejin,Zhu Youcheng,et al.Effect of LEO Satellite’s Orbit Parameter on GPS Occultation Event’s Number and Distribution[J].Journal of PLA University of Science and Technology,2002,3(2):85–89.
[11]徐晓华,李征航,罗佳.单颗LEO卫星轨道参数对GPS掩星事件分布和数量影响的模拟研究[J].武汉大学学报(信息科学版),2005,30(7):609–612.Xu Xiaohua,Li Zhenghang,Luo Jia.Simulation of the Impacts of Single LEO Satellite Orbit Parameters on the Distribution and Number of Occultation Events[J].Geomatics and Information Science of Wuhan University,2005,30(7):609–612.
[12]孙学金,赵世军,余鹏.GPS掩星切点水平漂移规律的数值研究[J].应用气象学报,2004,15(2):174–180.Sun Xuejin,Zhao Shijun,Yu Peng.Numerical Study of the Horizontal Drift of the GPS Signal Ray’s Perigee in Occultation Event[J].Journal of Applied Meteorological Science,2004,15(2):174–180.
[13]王先毅,孙越强,白伟华,等.北斗掩星事件数量与分布的模拟研究[J].地球物理学报,2013,56(8):2522–2530.Wang Xianyi,Sun Yueqiang,Bai Weihua,et al.Simulation of Number and Distribution of Compass Occultation Events[J].Chinese Journal of Geophysics,2013,56(8):2522–2530.
[14]刘大杰,施一民,过静珺.全球定位系统(GPS)的原理与数据处理[M].上海:同济大学出版社,1996:20–70.
[15]孙立刚,吴小成,胡雄.LEO-LEO掩星事件持续时间及卫星间相对角速度的仿真分析[J].空间科学学报,2017,37(5):574–584.Sun Ligang,Wu Xiaocheng,Hu Xiong.Simulation of Duration of LEO-LEO Occultation Events and Relative Angular Velocity between Satellites[J].Chinese Journal of Space Science,2017,37(5):574–584.
[2]Ware R,Exner M,Feng D,et al.GPS Sounding of the Atmosphere:Preliminary Results[R].Bulletin of the American Meteorological Society,1996,77:19–40
[3]胡雄,曾桢,张训械,等.大气GPS掩星观测反演方法[J].地球物理学报,2005,48(4):768–774.Hu Xiong,Zeng Zhen,Zhang Xunxie,et al.Atmospheric Inversion Methods of GPS Radio Occultation[J].Chinese Journal of Geophysics,2005,48(4):768–774.
[4]曾桢,胡雄,张训械,等.电离层GPS掩星观测反演技术[J].地球物理学报,2004,47(4):578–583.Zeng Zhen,Hu Xiong,Zhang Xunxie,et al.Inversion of Inonspheric GPS Occultation[J].Chinese Journal of Geophysics,2004,47(4):578–583.
[5]吴小成.电离层无线电掩星技术研究[D].北京:中国科学院研究生院(空间科学与应用研究中心),2008.Wu Xiaocheng.Radio Occultation Technique for Ionosphere Detection[D].Beijing:Chinese Academy of Sciences(Center for Space Science and Applied Research),2008.
[6]宫晓艳.大气无线电GNSS掩星探测技术研究[D].北京:中国科学院研究生院(空间科学与应用研究中心),2009.Gong Xiaoyan.Research on GNSS Atmospheric Radio Occultation Technique[D].Beijing:Chinese Academy of Sciences(Center for Space Science and Applied Research),2009.
[7]张训械,胡雄,曾桢.欧洲ACE+掩星观测计划[J].全球定位系统,2002,27(6):16–20.Zhang Xunxie,Hu Xiong,Zeng Zhen.Europe ACE+Radio Occultation Project[J].Global Positioning System,2002,27(6):16–20.
[8]杜晓勇,符养,薛震刚,等.卫星轨道参数对LEO-LEO掩星事件数量及分布影响的模拟研究[J].地球物理学报,2007,50(5):1289–1297.Du Xiaoyong,Fu Yang,Xue Zhengang,et al.Simulation of the Impacts of Satellite Orbit Parameters on the Number and Distribution of LEO-LEO Occultation Events[J].Chinese Journal of Geophysics,2007,50(5):1289–1297.
[9]胡雄,曾桢,张训械,等.无线电掩星技术及其应用[J].电波科学学报,2002,17(5):549–556.Hu Xiong,Zeng Zhen,Zhang Xunxie,et al.Radio Occultation and Its Application[J].Chinese Journal of Radio Science,2002,17(5):549–556.
[10]赵世军,孙学金,朱有成,等.LEO卫星轨道参数对GPS掩星数量和分布的影响[J].解放军理工大学学报(自然科学版),2002,3(2):85–89.Zhao Shijun,Sun Xuejin,Zhu Youcheng,et al.Effect of LEO Satellite’s Orbit Parameter on GPS Occultation Event’s Number and Distribution[J].Journal of PLA University of Science and Technology,2002,3(2):85–89.
[11]徐晓华,李征航,罗佳.单颗LEO卫星轨道参数对GPS掩星事件分布和数量影响的模拟研究[J].武汉大学学报(信息科学版),2005,30(7):609–612.Xu Xiaohua,Li Zhenghang,Luo Jia.Simulation of the Impacts of Single LEO Satellite Orbit Parameters on the Distribution and Number of Occultation Events[J].Geomatics and Information Science of Wuhan University,2005,30(7):609–612.
[12]孙学金,赵世军,余鹏.GPS掩星切点水平漂移规律的数值研究[J].应用气象学报,2004,15(2):174–180.Sun Xuejin,Zhao Shijun,Yu Peng.Numerical Study of the Horizontal Drift of the GPS Signal Ray’s Perigee in Occultation Event[J].Journal of Applied Meteorological Science,2004,15(2):174–180.
[13]王先毅,孙越强,白伟华,等.北斗掩星事件数量与分布的模拟研究[J].地球物理学报,2013,56(8):2522–2530.Wang Xianyi,Sun Yueqiang,Bai Weihua,et al.Simulation of Number and Distribution of Compass Occultation Events[J].Chinese Journal of Geophysics,2013,56(8):2522–2530.
[14]刘大杰,施一民,过静珺.全球定位系统(GPS)的原理与数据处理[M].上海:同济大学出版社,1996:20–70.
[15]孙立刚,吴小成,胡雄.LEO-LEO掩星事件持续时间及卫星间相对角速度的仿真分析[J].空间科学学报,2017,37(5):574–584.Sun Ligang,Wu Xiaocheng,Hu Xiong.Simulation of Duration of LEO-LEO Occultation Events and Relative Angular Velocity between Satellites[J].Chinese Journal of Space Science,2017,37(5):574–584.