arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2003.03908cs.RO
收藏

IMU误差传播的数学框架及其在预积分中的应用

A Mathematical Framework for IMU Error Propagation with Applications to Preintegration

SAFRAN TECH, Groupe Safran(赛峰集团赛峰技术中心);MINES ParisTech, PSL Research University(巴黎文理研究大学巴黎国立高等矿业学院);ISEA, University of New Caledonia(新喀里多尼亚大学环境与空间物理研究所)

Axel Barrau, Silvere Bonnabel

摘要:

为了将来自惯性测量单元(IMU)的信息与其他传感器融合,需要在位置、速度和方向方面对IMU误差传播(我们称之为扩展姿态的三元组)进行精确的模型。在本文中,我们利用一个非平凡的结果,即对数线性的惯性导航方程的基础上,最近推出的李群$SE_2(3)$,转置最近的方法Barfoot和Furgale相关联的不确定性与姿态(位置,方向)的$SE(3)$使用嘈杂的车轮速度时,扩展姿态(位置,速度,方向)的情况下,$SE_2(3)$使用嘈杂的IMU。此外,我们的方法扩展姿态结合对数线性性质允许重新审视流形上的预积分理论,并达到在这一领域的进一步理论水平。我们显示精确的预积分公式,占旋转地球,即离心力和科里奥利效应,可能会导致作为一个副产品。

英文摘要:

To fuse information from inertial measurement units (IMU) with other sensors one needs an accurate model for IMU error propagation in terms of position, velocity and orientation, a triplet we call extended pose. In this paper we leverage a nontrivial result, namely log-linearity of inertial navigation equations based on the recently introduced Lie group $SE_2(3)$, to transpose the recent methodology of Barfoot and Furgale for associating uncertainty with poses (position, orientation) of $SE(3)$ when using noisy wheel speeds, to the case of extended poses (position, velocity, orientation) of $SE_2(3)$ when using noisy IMUs. Besides, our approach to extended poses combined with log-linearity property allows revisiting the theory of preintegration on manifolds and reaching a further theoretic level in this field. We show exact preintegration formulas that account for rotating Earth, that is, centrifugal force and Coriolis effect, may be derived as a byproduct.

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。

↑