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arXiv 2201.01539math.OCcs.SYeess.SPeess.SYstat.ML
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逆扩展卡尔曼滤波器——第一部分:基本原理

Inverse Extended Kalman Filter -- Part I: Fundamentals

Himali Singh, Arpan Chattopadhyay, Kumar Vijay Mishra

AI总结:

本文提出逆扩展卡尔曼滤波器(I-EKF),在非线性前向与逆向状态空间模型下处理未知输入问题,给出稳定性与一致性理论保证,并通过数值实验验证其有效性。

摘要:

近年来,对抗博弈系统的进展使得从贝叶斯视角进行逆滤波的研究受到广泛关注。例如,为了预测对手的未来行动,需要估计对手的卡尔曼滤波器所跟踪的状态,这催生了逆卡尔曼滤波器(I-KF)的近期公式化研究。在此逆滤波背景下,我们针对前向滤波器中非线性过程动态和未知输入这两个关键挑战,提出了一种逆扩展卡尔曼滤波器(I-EKF)。本文及其姊妹篇(第二部分)旨在详细发展 I-EKF 的理论。本文假设系统模型信息完全已知,并在前向和逆向状态空间模型均为非线性的情况下,分别推导了带未知输入和不带未知输入的 I-EKF。在此过程中,还得到了带未知输入的 I-KF。随后,我们利用有界非线性方法和未知矩阵方法提供了理论稳定性保证,并证明了 I-EKF 的一致性。数值实验以递归 Cramér-Rao 下界为基准,验证了我们提出的各种逆滤波器的性能。在姊妹篇(第二部分)中,我们将这些公式进一步推广到高度非线性模型,并提出基于再生核希尔伯特空间的 EKF 以处理系统模型信息不完整的情况。

英文摘要:

Recent advances in counter-adversarial systems have garnered significant research attention to inverse filtering from a Bayesian perspective. For example, interest in estimating the adversary's Kalman filter tracked estimate with the purpose of predicting the adversary's future steps has led to recent formulations of inverse Kalman filter (I-KF). In this context of inverse filtering, we address the key challenges of non-linear process dynamics and unknown input to the forward filter by proposing an inverse extended Kalman filter (I-EKF). The purpose of this paper and the companion paper (Part II) is to develop the theory of I-EKF in detail. In this paper, we assume perfect system model information and derive I-EKF with and without an unknown input when both forward and inverse state-space models are non-linear. In the process, I-KF-with-unknown-input is also obtained. We then provide theoretical stability guarantees using both bounded non-linearity and unknown matrix approaches and prove the I-EKF's consistency. Numerical experiments validate our methods for various proposed inverse filters using the recursive Cramér-Rao lower bound as a benchmark. In the companion paper (Part II), we further generalize these formulations to highly non-linear models and propose reproducing kernel Hilbert space-based EKF to handle incomplete system model information.

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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