低成本IMU的偏差估计 包括在INS/GPS/Gyrocompass中的X轴和Y轴加速度计
1Department of Maritime Systems Engineering, Tokyo University of Marine Science and Technology, Tokyo 135-8533, Japan.
Sensors (Basel, Switzerland)
|March 17, 2025
概括
本研究引入了一种新的偏差估计方法,用于使用微电子机械系统 (MEMS) 的低成本惯性导航系统 (INS). 改进的准确性提供了一个具有成本效益的海上导航解决方案.
科学领域:
- 导航和定位系统 导航和定位系统
- 传感器技术 传感器技术
- 海事工程是海事工程.
背景情况:
- 惯性导航系统 (INS) 提供自主定位,但传统的高成本传感器限制了采用.
- 基于低成本的微电机系统 (MEMS) 的惯性测量单元 (IMU) 存在精度和偏差问题,特别是在海上环境中.
- 准确的INS对于可靠的海上导航至关重要,特别是当全球导航卫星系统 (GNSS) 不存在时.
研究的目的:
- 在INS中为低成本IMU开发一个改进的偏差估计方法.
- 为了提高海上航行位置和态度估计的准确性.
- 为传统的高成本INS传感器提供一个具有成本效益的替代品.
主要方法:
- 通过将轨迹生成器 (TG) 估计与实际测量进行比较,提出了一种改进的偏差估计技术.
- 引入了使用INS/GNSS/陀螺仪 (IGG) 数据进行X轴和Y轴加速偏差估计的高度差异相关性方法.
- 使用模拟数据集与统计分析的验证方法,包括用于角速度偏差的FFT和Butterworth波器.
主要成果:
- 巴特沃斯波器显示了最小的角度速度偏差估计误差.
- 基于高度的X轴和Y轴加速偏差估计结果分别为1.2 × 10−2 m/s2和1.0 × 10−4 m/s2,使用30分钟的数据.
- 拟议的方法显著提高了海上航行低成本IMU的准确性.
结论:
- 开发的偏差估计技术有效地提高了低成本IMU的性能.
- 这项研究为准确的海上航行提供了一个可行的,具有成本效益的解决方案.
- 使用MEMS IMU提高INS准确性为在海洋应用中更广泛采用开辟了可能性.
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