| GRO和LRO掩星事件模拟研究 |
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| 引用本文： | 王树志,柳聪亮,朱光武,白伟华,杜起飞,孙越强,夏俊明,孟祥广,王先毅,赵丹阳,王东伟,蔡跃荣,吴迪.GRO和LRO掩星事件模拟研究[J].空间科学学报,2017,37(2):207-213. |
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| 作者姓名： | 王树志 柳聪亮 朱光武 白伟华 杜起飞 孙越强 夏俊明 孟祥广 王先毅 赵丹阳 王东伟 蔡跃荣 吴迪 |
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| 作者单位： | 中国科学院国家空间科学中心 北京 100190 |
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| 基金项目： | 国家自然科学基金项目（41405039，41405040，41505030）和中国科学院科研装备研制项目（YZ201129）共同资助 |
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| 摘 要： | GRO（Global Navigation Satellite System Radio Occultation）和LRO（Low Earth Orbit Radio Occultation）联合组网探测地球大气是无线电掩星探测技术的主要发展方向.本文根据掩星事件的数学判据，仿真分析了LEO卫星主要轨道参数对GRO和LRO掩星事件数量和全球分布情况的影响.研究表明:卫星轨道越低GRO掩星事件越多；轨道倾角在30°和75°之间时，GRO掩星事件较多，全球覆盖率也较大；利用极轨卫星进行LRO掩星探测时，LRO掩星事件较均匀地分布在各纬度带.研究成果对GRO和LRO联合星座设计具有参考价值.
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| 关 键 词： | 掩星事件 GRO LRO LEO 轨道参数 |
| 收稿时间： | 2016-03-24 |
Simulation Study on GRO and LRO Events |
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| Institution: | National Space Science Center, Chinese Academy of Sciences, Beijing 100190 |
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| Abstract: | Combining the GRO (Global Navigation Satellite System Radio Occultation) and LRO (Low Earth Orbit Radio Occultation) techniques to probe the Earth's atmosphere is a main development direction of RO (Radio Occultation). In this study, the mathematical criteria of a RO event have been described. Then the effects of the main orbit parameters of LEO satellite on the RO events amount and their global distribution have been discussed by a simulation study. The results showed that:the lower the LEO satellite orbit is, the more GRO events are; when the inclination is between 30° and 75°, there are more GRO events and their Earth coverage is higher. The LRO events distribute on the Earth evenly when the LEO-LEO RO satellite set in the polar orbits. This study can provide a scientific reference for GRO and LRO satellite constellation design. |
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