| 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 |
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| 引用本文： | 杜晓勇,符养,薛震刚,郭粤宁,毛节泰.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. |
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| 作者姓名： | 杜晓勇 符养 薛震刚 郭粤宁 毛节泰 |
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| 作者单位： | 1.北京大学物理学院，北京 100871;2.北京应用气象研究所，北京 100029 |
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| 基金项目： | 国家自然科学基金(10603011)资助 |
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| 摘 要： | 文章对LEO－LEO卫星掩星事件的特性进行了深入讨论，通过仿真计算定量讨论了轨道参数对掩星事件次数及分布的影响.结果指出：1)对一年掩星事件数量及其纬度分布影响大的轨道参数依次是轨道倾角、轨道高度、升交点赤经和近地点角距；而这些参数对一年掩星事件的经度分布影响都不大；2)发射卫星和接收卫星倾角之间的相互关系对掩星事件数量和纬度分布影响最大，两卫星倾角接近互补时掩星事件最多, 两颗LEO卫星中与90°相差较大的倾角决定了LEO－LEO掩星事件的纬度分布范围；3)发射卫星和接收卫星处于同一轨道高度时，LEO－LEO掩星事件数取得极大值，发射卫星和接收卫星都采用600 km的轨道高度，一年LEO－LEO掩星事件数最多；4) 发射卫星和接收卫星升交点赤经(RAAN)的相互关系对LEO－LEO掩星事件数量影响很大，发射卫星和接收卫星升交点赤经之差为120°或240°时掩星事件数量最多，RAAN对掩星事件纬度和经度分布影响不大；5)近地点角距对掩星事件数量和分布影响都不大.该研究结果对LEO－LEO掩星探测卫星的轨道设计有一定的参考作用.
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| 关 键 词： | 卫星 LEO－LEO掩星 轨道参数 模拟 |
| 文章编号： | 0001-5733（2007）05-1289-09 |
| 收稿时间： | 2007-2-5 |
| 修稿时间： | 2007-02-05 |
Simulation of the impacts of satellite orbit parameters on the number and distribution of LEO - LEO occultation events |
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| DU Xiao-Yong,FU Yang,XUE Zhen-Gang,GUO Yue-Ning,MAO Jie-Tai.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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| Authors: | DU Xiao-Yong FU Yang XUE Zhen-Gang GUO Yue-Ning MAO Jie-Tai |
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| Institution: | 1.School of Physics, Peking University, Beijing 100871, China;2.Beijing Institute of Applied Meteorology, Beijing 100029, China |
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| Abstract: | The character of LEO-LEO satellite occultation events is well discussed in this paper.The impact of satellite orbit parameters on the number and distribution of occultation events are discussed based on simulation.The following conclusions are drawn.1) The orbit parameters that have relatively greater influence on the number and latitudinal distribution of annual occultation events are orbit inclination(I),orbit height(H),Right Ascension of Ascending Node(RAAN) and Argument of Perigee(AP) in turn.All four parameters have little impact on the longitudinal distribution of annual occultation events.2) The orbit inclination of Transmitting Satellite(TS) and Receiving Satellite(RS) impacts both LEO-LEO occultation events number and their latitudinal distribution most.The number of occultation events reaches the maximum as the sum of the two inclination angles nears 180 degrees.The one that far away from 90 degrees of the two inclination angles determines the latitude range of the occultation events.3) LEO-LEO occultation events number reaches a maximum when the heights of TS and RS are the same,and it reaches the maximum when the heights of TS and RS are 600 km.4) The RAAN of TS and RS has a great influence on the LEO-LEO occultation number,but has little influence on occultation distribution.The number of occultation events reaches the maximum as the RAAN difference is around 120 and 240 degrees.5) The AP has little influence on LEO-LEO occultation number and distribution.The results can be referenced when determining the parameters of LEO-LEO occultation satellites. |
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| Keywords: | Satellite LEO-LEO Occultation Orbit parameter Simulation |
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