| GPS/BDS/GLONASS/Galileo多系统融合在中国区域的仿真分析 |
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| 引用本文： | 徐炜,刘扬,严超,王涛,耿加伟.GPS/BDS/GLONASS/Galileo多系统融合在中国区域的仿真分析[J].测绘工程,2017,26(10). |
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| 作者姓名： | 徐炜 刘扬 严超 王涛 耿加伟 |
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| 作者单位： | 安徽理工大学 测绘学院,安徽 淮南,232001 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 通过STK软件对GPS、BDS、GLONASS、Galileo四个系统的星座结构进行仿真,并选择单系统与多系统组合定位的方式对中国区域内的可见卫星数、GDOP值和定位精度进行覆盖分析。结果表明,GPS/BDS/GLONASS/Galileo四系统组合定位在我国的GDOP值可达0.7~0.8,定位精度可达3~4m,优于其他方式的组合定位;同时四系统组合定位下的GDOP值降低,定位精度更好,GDOP值与定位精度的波动异常得到了抑制,导航定位的性能与稳定性也得到了相应的提升。
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| 关 键 词： | STK 可见卫星数 GDOP值 定位精度 |
Simulation analysis of GPS/BDS/GLONASS/Galileo multi-constellation satellite system in China |
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| XU Wei,LIU Yang,YAN Chao,WANG Tao,GENG Jiawei.Simulation analysis of GPS/BDS/GLONASS/Galileo multi-constellation satellite system in China[J].Engineering of Surveying and Mapping,2017,26(10). |
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| Authors: | XU Wei LIU Yang YAN Chao WANG Tao GENG Jiawei |
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| Abstract: | In this paper, the constellation structures of GPS, BDS, GLONASS and Galileo are simulated with STK software, then analysis is made on the visible satellite, GDOP value and positioning accuracy in China areas with single-system and multi-system combination positioning method.The result shows that the value of GDOP can reach 0.7~0.8 when the combination of four systems is chosen in our country, and the positioning accuracy can reach 3~4 meters, which is better than other combination systems.Meanwhile, the GDOP value decreases, the positioning accuracy is higher and the abnormal fluctuation of the GDOP value and the positioning accuracy are restrained.In addition, the performance and stability of the navigation and positioning are also improved accordingly. |
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| Keywords: | STK number of visible satellites GDOP value positioning accuracy |
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