| Android智能手机GNSS数据质量分析 |
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| 引用本文： | 张垠,涂锐,洪菊,李芳馨,侯福荣.Android智能手机GNSS数据质量分析[J].全球定位系统,2021,46(4):85-92. |
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| 作者姓名： | 张垠 涂锐 洪菊 李芳馨 侯福荣 |
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| 作者单位： | 1.中国科学院国家授时中心，西安 710600 |
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| 基金项目： | 国家自然科学基金项目（41674034，41974032）；中组部、中科院高层次青年人才项目及王宽诚教育基金会 |
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| 摘 要： | 随着全球卫星导航系统(GNSS)的不断建设，智能手机基于移动位置服务 (LBS)得到了迅猛发展. 文中选取市面上常见的3种手机机型，包括:三星S9+(Exynos)、华为Mate30和华为P40 Pro作为研究对象，并使用北斗星通UR4B0-D高性能GNSS接收机进行同步静态观测实验，从卫星可见数、载噪比(CNR)、卫星高度角和多路径误差等方面，对手机GNSS数据质量进行分析. 结果表明:不同型号手机在观测能力和数据质量方面存在明显差异. Android智能手机的GNSS数据质量较差，CNR较小，且CNR与卫星高度角无明显关系. 此外，多路径误差是影响Android智能手机高精度定位的主要误差项之一.
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| 关 键 词： | Android智能手机 GNSS原始观测值 数据质量评估 多路径误差 静态数据分析 |
| 收稿时间： | 2021-04-25 |
Quality assessment of Android smartphone with GNSS raw observations |
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| Institution: | 1.National Time Service Center, Chinese Academy of Sciences, Xi’an 710600, China2.University of Chinese Academy of Sciences, Beijing 100049, China3.Key laboratory of precision navigation and timing technology, Chinese Academy of Sciences, Xi’an 710600, China |
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| Abstract: | With the continuous construction of Global Navigation Satellite System (GNSS), the location-based service (LBS) of smart phones has rapidly developed. In this paper, several commonly used smartphone are selected as research objects, such as Samsung S9+(Exynos), Huawei Mate30, Huawei P40 Pro. the measurement receiver UR4B0-D from BDStar Navigation is used for synchronous static observation experiment. the GNSS raw data quality of Android smartphone is analyzed from the aspects of satellite visibility, carrier-to-noise ratio (CNR), satellite altitude angle, multipath error and so on. The results show that there are obvious differences in observation capabilities and data quality among different smartphones. Android smartphones have poor data quality and low CNR. The CNR of Android smartphones has no obvious relationships with the satellite altitude angle. In addition, multipath error is one of the main errors that affect the high-precision positioning of Android smartphones. |
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