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arXiv 1509.04072stat.MLcs.SYeess.SY
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使用伪测量的鲁棒高斯滤波

Robust Gaussian Filtering using a Pseudo Measurement

Max Planck Institute for Intelligent Systems(马克斯·普朗克智能系统研究所);University of Southern California(南加州大学)

Manuel Wüthrich, Cristina Garcia Cifuentes, Sebastian Trimpe, Franziska Meier, Jeannette Bohg, Jan Issac, Stefan Schaal

AI总结:

本文提出通过引入伪测量改进高斯滤波以应对厚尾传感器模型,通过特征函数优化实现鲁棒滤波,适用于线性和非线性系统。

摘要:

许多传感器,如测距、声纳、雷达、GPS和视觉设备,产生的测量值常受异常值污染。此问题可通过使用厚尾传感器模型解决,但所有属于高斯滤波家族的估计算法(如广泛使用的扩展卡尔曼滤波和无迹卡尔曼滤波)本质上无法与之兼容。本文的贡献是证明通过简单改变即可使任何高斯滤波器与厚尾传感器模型兼容:即不再使用物理测量进行滤波,而是使用对物理测量应用特征函数得到的伪测量进行滤波。我们推导出在某些条件下最优的特征函数。仿真结果表明,所提方法能有效处理测量异常值,并在线性和非线性系统中实现鲁棒滤波。

英文摘要:

Many sensors, such as range, sonar, radar, GPS and visual devices, produce measurements which are contaminated by outliers. This problem can be addressed by using fat-tailed sensor models, which account for the possibility of outliers. Unfortunately, all estimation algorithms belonging to the family of Gaussian filters (such as the widely-used extended Kalman filter and unscented Kalman filter) are inherently incompatible with such fat-tailed sensor models. The contribution of this paper is to show that any Gaussian filter can be made compatible with fat-tailed sensor models by applying one simple change: Instead of filtering with the physical measurement, we propose to filter with a pseudo measurement obtained by applying a feature function to the physical measurement. We derive such a feature function which is optimal under some conditions. Simulation results show that the proposed method can effectively handle measurement outliers and allows for robust filtering in both linear and nonlinear systems.

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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