| 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. doi: 10.11728/cjss2017.02.207 |
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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 |
| 修稿时间： | 2016-04-07 |
Simulation Study on GRO and LRO Events |
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| WANG Shuzhi, LIU Congliang, ZHU Guangwu, BAI Weihua, DU Qifei, SUN Yueqiang, XIA Junming, MENG Xiangguang, WANG Xianyi, ZHAO Danyang, WANG Dongwei, CAI Yuerong, WU Di. Simulation Study on GRO and LRO Events[J]. Chinese Journal of Space Science, 2017, 37(2): 207-213. doi: 10.11728/cjss2017.02.207 |
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| Authors: | WANG Shuzhi LIU Congliang ZHU Guangwu BAI Weihua DU Qifei SUN Yueqiang XIA Junming MENG Xiangguang WANG Xianyi ZHAO Danyang WANG Dongwei CAI Yuerong WU Di |
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| Affiliation: | 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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| Keywords: | Radio occultation event Global Navigation Satellite System Radio Occultation (GRO) Low Earth Orbit Radio Occultation (LRO) Low Earth Orbit (LEO) Orbit parameter |
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