论文标题

liro:紧密耦合的激光乳脂范围的探针仪

LIRO: Tightly Coupled Lidar-Inertia-Ranging Odometry

论文作者

Nguyen, Thien-Minh, Cao, Muqing, Yuan, Shenghai, Lyu, Yang, Nguyen, Thien Hoang, Xie, Lihua

论文摘要

近年来,由于3D激光雷达的成本和重量不断降低,这种类型的传感器在机器人技术社区中的应用变得越来越流行。尽管有很多进展,但估计漂移和跟踪损失仍然是与这些系统相关的普遍关注点。但是,从理论上讲,这些问题可以通过使用一些观测值来解决环境中的固定地标。这促使我们研究了LIDAR和惯性测量值的超宽带(UWB)范围测量的紧密耦合传感器融合方案。首先,来自IMU,LIDAR和UWB的数据与机器人在滑动窗口上的状态相关联,基于其时间戳。然后,我们构建了一个成本函数,包括来自UWB,LIDAR和IMU前整合测量的因素。最后,进行了优化过程,以估计机器人的位置和方向。通过一些现实世界的实验,我们表明该方法可以有效地解决漂移问题,而只需要在环境中部署两个或三个锚点。

In recent years, thanks to the continuously reduced cost and weight of 3D Lidar, the applications of this type of sensor in robotics community have become increasingly popular. Despite many progresses, estimation drift and tracking loss are still prevalent concerns associated with these systems. However, in theory these issues can be resolved with the use of some observations to fixed landmarks in the environments. This motivates us to investigate a tightly coupled sensor fusion scheme of Ultra-Wideband (UWB) range measurements with Lidar and inertia measurements. First, data from IMU, Lidar and UWB are associated with the robot's states on a sliding windows based on their timestamps. Then, we construct a cost function comprising of factors from UWB, Lidar and IMU preintegration measurements. Finally an optimization process is carried out to estimate the robot's position and orientation. Via some real world experiments, we show that the method can effectively resolve the drift issue, while only requiring two or three anchors deployed in the environment.

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