| LPV-200下中国区域内 ARAIM 可用性评估 |
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| 引用本文： | 肖伟,刘文祥,徐博,孙广富.LPV-200下中国区域内 ARAIM 可用性评估[J].全球定位系统,2014(5):32-36. |
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| 作者姓名： | 肖伟 刘文祥 徐博 孙广富 |
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| 作者单位： | 国防科学技术大学电子科学与工程学院卫星导航定位技术工程研究中心,湖南长沙,410073 |
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| 摘 要： | 随着GNSS星座的增多以及多频技术的发展，基于解分离的高级接收机自主完好性监测算法被广泛研究。本文介绍了该算法的基本原理，并结合多星座特点，对中国区域内ARAIM算法能力进行评估，利用仿真数据分析了用户测距精度对算法可用性的影响；探讨了不同星座数据在中国区域的完好性性能。仿真结果表明：双频条件下，系统完好性性能很大程度上取决于用户测距精度，在中国区域内，仅GPS单星座不足以满足LPV-200进近对完好性的要求，GPS与Galileo双星座下，ARAIM 算法覆盖率可达100％。
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| 关 键 词： | ARAIM 算法 可用性 垂直保护级 多星座 |
The Current ARAIM Availability in China According to LPV-200 |
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| XIAO Wei,LIU Wenxiang,XU Bo,SUN Guangfu.The Current ARAIM Availability in China According to LPV-200[J].Gnss World of China,2014(5):32-36. |
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| Authors: | XIAO Wei LIU Wenxiang XU Bo SUN Guangfu |
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| Institution: | (. Satellite Navigation and Positioning Technology Engineering Center, Electronic Science and Engineering School, National University of Defense Technology, Changsha Hunan 410073, China) |
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| Abstract: | With the development of GNSS constellation and multi-frequency technol-ogy .Advanced Receiver Autonomous Integrity Monitoring （ARAIM ） approach has been widely studied ,which is an optimization of the Multiple Hypotheses Solution Separation （M HSS） method .In this study ,the basic principles of ARAIM approach are introduced , combined with multi-constellation characteristics ,the current capability of the ARAIM ap-proach in China is investigated under different constellations .The results show that under the dual-frequency conditions , the system integrity largely depends on the user accuracy （URA） .The current GPS constellation alone does not fulfil LPV-200 requirements in Chi-na .However ,using GPS and Galileo improves availably of ARAIM and its integrity per-formance ,the coverage of ARAIM is 100% . |
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| Keywords: | ARAIM availability VPL multi-constellation |
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