Robust Variational-Based Kalman Filter for Outlier Rejection With Correlated Measurements
IEEE Transactions on Signal Processing(2021)
摘要
State estimation is a fundamental task in many engineering fields, and therefore robust nonlinear filtering techniques able to cope with misspecified, uncertain and/or corrupted models must be designed for real-life applicability. In this contribution we explore nonlinear Gaussian filtering problems where measurements may be corrupted by outliers, and propose a new robust variational-based filtering methodology able to detect and mitigate their impact. This method generalizes previous contributions to the case of multiple outlier indicators for both independent and dependent observation models. An illustrative example is provided to support the discussion and show the performance improvement.
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关键词
Robust filtering,variational Bayes,outliers,heavy-tailed noise,correlated measurements
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