| 多类用户的混合星座导航系统定位性能分析 |
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| 引用本文： | 聂鹏程,姚静,易东云.多类用户的混合星座导航系统定位性能分析[J].测绘科学,2011,36(3):62-64. |
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| 作者姓名： | 聂鹏程 姚静 易东云 |
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| 作者单位： | 国防科技大学理学院,长沙,410073 |
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| 基金项目： | 国家自然科学基金项目(60902089); 航天支撑技术基金项目 |
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| 摘 要： | 本文针对地面用户与空间用户在测量环境与观测几何动态性等方面的不同,基于导航卫星可见性与加权精度因子(WDOP)对混合星座导航系统的定位性能进行了分析.给出了不同用户的星座天空视图与可视时长;从理论上讨论了权值选取对WDOP的影响.仿真表明,地面静态用户对不同类型导航卫星的可见性差异很大;而低轨卫星用户的可视时长更短,观...
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| 关 键 词： | 混合星座 用户类型 天空视图 可视时长 加权精度因子 |
Positioning performance analysis of mixed constellation navigation system for multi-type users |
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| NIE Peng-cheng,YAO Jing,YI Dong-yun.Positioning performance analysis of mixed constellation navigation system for multi-type users[J].Science of Surveying and Mapping,2011,36(3):62-64. |
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| Authors: | NIE Peng-cheng YAO Jing YI Dong-yun |
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| Affiliation: | NIE Peng-cheng,YAO Jing,YI Dong-yun(College of Science,National University of Defense Technology,Changsha 410073,China) |
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| Abstract: | Aiming at the different features of users on the ground and in the space in the aspects of measurement environment and observation geometry dynamics,the positioning performance of mixed constellation navigation systems was analyzed based on the navigation satellite visibility and the weighted dilution of precision(WDOP).The constellation sky view and visible time intervals were presented.The influence of weight selection on the WDOP was also discussed theoretically.Simulations showed that the static users o... |
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| Keywords: | mixed constellation user type sky view visible time interval weighted dilution of precision |
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