arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2005.10648cs.RO
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使用单个UWB锚点进行精确位置跟踪

Accurate position tracking with a single UWB anchor

École Polytechnique de Montréal(蒙特利尔理工学院);University of Tübingen(图宾根大学);Chongqing University(重庆大学);Technical University of Munich(慕尼黑工业大学)

Yanjun Cao, Chenhao Yang, Rui Li, Alois Knoll, Giovanni Beltrame

摘要:

精确定位和跟踪是机器人应用的基本要求。定位系统如GPS、光学跟踪、同时定位与地图构建(SLAM)用于日常生活活动、研究和商业应用。超宽带(UWB)技术提供了另一种在室内和室外精确定位设备的方法。在本文中,我们研究了一个单一的UWB锚定位解决方案,而不是传统的多锚设置。除了单个UWB测距源的挑战外,我们唯一需要的其他传感器是低成本的9 DoF惯性测量单元(IMU)。在这种配置下,我们建议连续监测UWB范围变化,以估计机器人在线移动时的速度。将速度估计与来自IMU传感器的方位估计相结合,系统变得时间可观测。我们使用扩展的卡尔曼滤波器(EKF)来估计机器人的位姿。通过我们的解决方案,我们可以有效地纠正累积误差,并保持准确的跟踪移动机器人。

英文摘要:

Accurate localization and tracking are a fundamental requirement for robotic applications. Localization systems like GPS, optical tracking, simultaneous localization and mapping (SLAM) are used for daily life activities, research, and commercial applications. Ultra-wideband (UWB) technology provides another venue to accurately locate devices both indoors and outdoors. In this paper, we study a localization solution with a single UWB anchor, instead of the traditional multi-anchor setup. Besides the challenge of a single UWB ranging source, the only other sensor we require is a low-cost 9 DoF inertial measurement unit (IMU). Under such a configuration, we propose continuous monitoring of UWB range changes to estimate the robot speed when moving on a line. Combining speed estimation with orientation estimation from the IMU sensor, the system becomes temporally observable. We use an Extended Kalman Filter (EKF) to estimate the pose of a robot. With our solution, we can effectively correct the accumulated error and maintain accurate tracking of a moving robot.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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