一个强大的单天线GNSS/MEMS融合结构,用于在具有挑战性的环境中可靠的态度确定
Jiaji Wu1,2, Yuying Li1,2, Tianci Tang3
1GNSS Research Center, Wuhan University, Wuhan, 430079, China.
Scientific reports
|July 8, 2025
概括
这项研究介绍了一种新型的单一天线全球导航卫星系统 (GNSS) /微电机系统 (MEMS) 态度系统. 它在具有挑战性的城市环境中实现了高精度和稳定性,优于现有方法.
科学领域:
- 导航系统 导航系统
- 传感器融合式传感器
- 态度的决定 态度的决定
背景情况:
- 城市环境对传统的多天线GNSS和独立的MEMS构成挑战,原因是信号阻塞和漂移.
- 现有的系统在复杂的场景中存在低准确度和低稳定性问题.
研究的目的:
- 开发一个创新的单天线GNSS/MEMS集成态度测定系统.
- 为了提高城市环境中导航的准确性和稳定性.
主要方法:
- 实施了混合时差载波阶段/伪距离 (TDCP/TDPR) 技术,以改进GNSS距离和航向估计.
- 整合了多策略的质量控制框架,包括零速度检测 (ZVD),磁性干扰检测 (MDD) 和故障检测和排除 (FDE).
- 采用了适应性噪声参数调机制,以优化波器.
主要成果:
- 与传统的SPP/MEMS,独立的MEMS和基线GNSS/MEMS融合相比,拟的系统表现出更高的性能.
- 实现的圆形误差可能95 (CEP95) 态度误差为1.2785° (滚动),0.9412° (俯冲) 和1.1991° ().
- 报告了城市环境中单天线GNSS/MEMS系统的最高准确度和稳定性.
结论:
- 开发的单天线GNSS/MEMS系统有效地解决了城市航行中的精度和稳定性限制.
- 混合TDCP/TDPR技术和多策略质量控制显著提高了数据利用和测量可靠性.
- 该系统提供了一个有希望的解决方案,用于在具有挑战性的环境中可靠地确定态度.
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