| 引用本文: | 鞠冰,昌虓,谷德峰,等.CODE新光压模型对北斗混合导航星座精密轨道确定的影响.[J].国防科技大学学报,2018,40(1):86-92.[点击复制] |
| JU Bing,CHANG Xiao,GU Defeng,et al.Analysis of CODE′s new solar radiation pressure model on precise orbit determination for mixed-type BeiDou constellation[J].Journal of National University of Defense Technology,2018,40(1):86-92[点击复制] |
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| CODE新光压模型对北斗混合导航星座精密轨道确定的影响 |
| 鞠冰1,2, 昌虓1, 谷德峰1, 段晓君1, 王正明1 |
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(1. 国防科技大学 文理学院， 湖南 长沙 410073;2.
2. 北京航天飞行控制中心 航天飞行动力学技术重点实验室， 北京 100094)
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| 摘要: |
| 运用卫星定轨软件工具包NUDTTK，分析了欧洲定轨中心扩展的经验光压模型（EECOM）对北斗二代混合导航星座精密轨道确定的影响。研究表明：对地球静止轨道卫星而言，EECOM能够明显改善定轨精度，相比于传统的ECOM-9和ECOM-5模型，卫星激光测距检核精度分别提高17.4%和35.1%。对倾斜地球同步轨道卫星和中轨道卫星而言，采用ECOM-5模型的定轨精度要优于采用EECOM和ECOM-9模型的，新光压模型EECOM并不能有效改善倾斜地球同步轨道卫星和中轨道卫星的定轨精度。与IGS数据分析中心WHU、GFZ和CODE的轨道产品相互比对的结果显示：目前，国防科技大学北斗精密轨道产品中，地球静止轨道卫星的定轨精度为1~4 m，倾斜地球同步轨道卫星的定轨精度为25~30 cm，中轨道卫星的定轨精度为10~20 cm。 |
| 关键词: 经验光压模型 精密轨道确定 北斗卫星导航系统 混合星座 偏航姿态模式 |
| DOI：10.11887/j.cn.201801013 |
| 投稿日期：2016-11-07 |
| 基金项目:国家自然科学基金资助项目（61573367，61370013，91438202） |
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| Analysis of CODE′s new solar radiation pressure model on precise orbit determination for mixed-type BeiDou constellation |
| JU Bing1,2, CHANG Xiao1, GU Defeng1, DUAN Xiaojun1, WANG Zhengming1 |
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(1. College of Liberal Arts and Sciences， National University of Defense Technology, Changsha 410073, China;2.
2. Sciences and Technology on Aerospace Flight Dynamic Laboratory, Beijing Aerospace Control Center, Beijing 100094, China)
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| Abstract: |
| The performance of CODE′s new solar radiation pressure model, the EECOM (extended empirical CODE orbit model), was analyzed on precise orbit determination for mixed-type BeiDou constellation. This study is based on the NUDTTK software, which is a satellite orbit determination toolkit. The validation of satellite laser ranging reveals that the EECOM can improve orbital accuracy of geostationary earth orbit satellites by 17.4% and 35.1%, compared with traditional CODE′s ECOM-9 and ECOM-5 models, respectively. As to the inclined geosynchronous earth orbit and the medium earth orbit satellites, the ECOM-5 model performs better than EECOM as well as ECOM-9 model. It means that CODE′s new solar radiation pressure model is not able to improve the orbital accuracy of the inclined geosynchronous earth orbit and the medium earth orbit satellites. External orbit validation by IGS data analysis centers of GFZ, WHU and CODE indicates that the accuracy of our current BeiDou precision orbit is 1~4 m for geostationary earth orbit satellites, 25~30 cm for inclined geosynchronous earth orbit satellites and 10~20 cm for medium earth orbit satellites, respectively. |
| Keywords: empirical solar radiation pressure model precise orbit determination BeiDou navigation satellite system mixed-type constellation yaw attitude mode |
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