| 卫星导航定位方程的病态条件 |
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| 引用本文： | 帅平,曲广吉.卫星导航定位方程的病态条件[J].飞行器测控学报,2006,25(1):1-5. |
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| 作者姓名： | 帅平 曲广吉 |
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| 作者单位： | 中国空间技术研究院总体部 北京.100094 |
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| 摘 要： | 定位精度因子(PDOP)上限取值是导航星座设计及其性能评价的基本依据。本文系统地论述卫星导航定位方程及其精度评定算法以及线性方程病态条件,通过实测和仿真数值试验结果对比分析,详细论证PDOP与卫星导航定位方程病态条件的关系,进而确定PDOP上限取值,以满足实际工程应用需求。
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| 关 键 词： | 卫星导航定位方程 病态条件 定位精度因子 数值试验 |
| 收稿时间： | 2005-09-22 |
| 修稿时间： | 2005-10-17 |
Ill Conditions of Satellite Navigation Positioning Equations |
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| SHUAI Ping, QU Guang-ji.Ill Conditions of Satellite Navigation Positioning Equations[J].Journal of Spacecraft TT&C Technology,2006,25(1):1-5. |
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| Authors: | SHUAI Ping QU Guang-ji |
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| Institution: | System Design Department, China Academy of Space Technology, Beijing 100094 |
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| Abstract: | The upper-limit of the positioning dilution of precision(PDOP) is an important index to design of a navigation constellation and evaluation of its performance.The satellite navigation positioning equations,algorithms of their precision evaluation and ill conditions of linear equations are described systematically in this paper.Then,the relationship between ill conditions of the satellite navigation positioning equations and PDOP is illustrated in detail by comparing and analyzing the results from the actual and simulated numerical tests.As a result,the upper-limit of PDOP can be determined and applied to the actual navigation constellation design and its performance evaluation. |
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| Keywords: | Satellite Navigation Positioning Equations Ill Conditions Positioning Dilution of Precision(PDOP) Numerical Test |
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