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智能手机MEMS加速计和陀螺仪测量错误:实验室测试和分析对定位性能影响的分析
Vincenzo Capuano1, Liangchun Xu1, Jose Estrada Benavides1
1Samsung Semiconductor, Inc., San Jose, CA 95134, USA.
Sensors (Basel, Switzerland)
|September 9, 2023
概括
这项研究分析了用于导航的智能手机中的微电机械系统 (MEMS) 传感器错误. 研究结果揭示了这些错误如何影响惯性导航系统 (INS) 的性能,无论是独立的还是与全球导航卫星系统 (GNSS) 结合使用的.
科学领域:
- 工程 工程师 工程师 工程师
- 计算机科学 计算机科学
- 地质物理学 地质物理学
背景情况:
- 智能手机越来越多地用于汽车导航,取代了传统系统.
- 它们包含微电机系统 (MEMS) 传感器,用于在全球导航卫星系统 (GNSS) 挑战的环境中导航.
- 智能手机中的基于MEMS的惯性导航系统 (INS) 由于固有的传感器错误,其性能低于高级系统.
研究的目的:
- 在五种不同的智能手机机型号中调查MEMS惯性传感器中的随机和决定性错误.
- 分析这些发现的错误对基于智能手机的导航性能的影响.
- 评估对纯INS和紧密合的INS-GNSS导航的影响.
主要方法:
- 来自五个不同的智能手机制造商的MEMS惯性传感器测量的实验室测试.
- 传感器中的随机和确定性错误源的表征.
- 使用纯INS和紧密合的INS-GNSS算法对导航性能进行模拟和分析.
主要成果:
- 详细介绍了MEMS惯性传感器错误的实验室测试结果.
- 该研究量化了这些错误对导航准确性的短期影响.
- 在独立的INS和集成的INS-GNSS解决方案中都观察到性能下降.
结论:
- 智能手机的MEMS传感器含有严重的随机和决定性错误,影响导航.
- 这些错误对基于智能手机的导航系统的性能产生了显著的影响.
- 了解和减轻这些错误对于可靠的智能手机导航至关重要,特别是在GNSS被拒绝的场景中.
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