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确定用于智能手机高精度定位的天线相位中心

Fei Shen^1,2,3, Qianlei Hu^1,2,3, Chengkai Gong⁴

¹School of Geography, Nanjing Normal University, Nanjing 210023, China.

Sensors (Basel, Switzerland)

|April 13, 2024

概括

确定智能手机天线相位中心 (APC) 纠正全球导航卫星系统 (GNSS) 错误. 这种方法显著提高了智能手机定位准确度,将根平均平方误差降低了高达59.6%.

科学领域:

地理学工程工程地质学
卫星导航系统卫星导航系统
移动设备技术移动设备技术

背景情况:

智能手机是主要的导航工具,但内部干扰会导致天线相中心 (APC) 错误.
在APC和几何中心之间的错位降低了全球导航卫星系统 (GNSS) 定位精度.
高精度定位要求精确的智能手机APC确定.

研究的目的:

分析智能手机中的GNSS接收机天线相位中心错误.
提出并验证智能手机APC校正的方法.
通过减轻系统错误来提高智能手机定位准确度.

主要方法:

详细分析GNSS接收机天线相位中心错误生成.
在已知的坐标列上使用小米Mi8进行智能手机定位实验.
静态相对定位,以测量级设备作为参考.
为APC确定和纠正提供权重估计.
在APC校正之前和之后的定位准确性比较.

主要成果:

在E/N/U方向中,APC校正显著减少了根平均平方误差 (RMSEs),分别为59.6%,58.5%和42.0%.
标准偏差的影响最小,但RMSE显著改善.
整数模两可的固定率在APC修正后略有提高.

结论:

智能手机APC确定有效减少GNSS定位中的平面系统错误.
拟议的方法提高了智能手机整体定位准确度.
这项研究对于推进高精度智能手机定位研究具有价值.

关键词:

在GNSS天线的相位中心.小米Mi8是小米的第一个产品.高精度定位定位 - 高精度定位定位相对定位的相对定位.

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