| 多星座GNSS卫星轨道模型简化方法研究 |
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| 引用本文： | 蔡熙,许承东,宋丹. 多星座GNSS卫星轨道模型简化方法研究[J]. 北京理工大学学报, 2014, 34(8): 819-823 |
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| 作者姓名： | 蔡熙 许承东 宋丹 |
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| 作者单位： | 北京理工大学宇航学院,飞行器动力学与控制教育部重点实验室,北京100081;北京理工大学宇航学院,飞行器动力学与控制教育部重点实验室,北京100081;北京理工大学宇航学院,飞行器动力学与控制教育部重点实验室,北京100081 |
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| 基金项目： | 国家自然科学基金资助项目（61173077）；国家“八六三”计划项目（2011AA120505） |
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| 摘 要： | 为提高多星座GNSS卫星轨道模型的可视化效率，从卫星椭圆轨道的近似，统一同一星座卫星轨道半长轴长度，基于K-means算法对升交点赤经数据进行聚类划分与重新赋值这3个方面对模型进行了简化，并进行了仿真计算. 仿真结果表明，该方法的采用显著减少了需要显示的轨道数量，减少了完成模型渲染所需的时间，提高了每秒显示帧数. 多星座GNSS卫星轨道模型的可视化效率得到明显提高.
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| 关 键 词： | 全球导航卫星系统(GNSS) 卫星轨道模型 可视化 K-means |
| 收稿时间： | 2013-01-31 |
Research on Simplified Method of Multi-GNSS Satellite Orbit Model |
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| CAI Xi,XU Cheng-dong and SONG Dan. Research on Simplified Method of Multi-GNSS Satellite Orbit Model[J]. Journal of Beijing Institute of Technology(Natural Science Edition), 2014, 34(8): 819-823 |
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| Authors: | CAI Xi XU Cheng-dong SONG Dan |
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| Affiliation: | Key Laboratory of Dynamics and Control of Flight Vehicle, Ministry of Education, School of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081, China |
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| Abstract: | In order to improve the visualization efficiency of multi-GNSS satellite orbit model, a new simplified method was demonstrated and a simulation was conducted. This method includes the following three aspects: the orbit shape of satellites was altered from ellipse to circle; in the same constellation, different values of orbit semi-major axes were unified into one mean value; the values of right ascension of ascending node were clustered and renewed based on K-means algorithm. In conclusion, simulation results show that the new method can radically decrease the required number of displayed orbits, and decrease the render time of the model while the frames per second are increased. The visualization efficiency of multi-GNSS satellite orbit model is significantly improved. |
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| Keywords: | global navigation satellite systems (GNSS) satellite orbit model visualization K-means |
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