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- W4287707986 abstract "Many state estimation and control algorithms require knowledge of how probability distributions propagate through dynamical systems. However, despite hybrid dynamical systems becoming increasingly important in many fields, there has been little work on utilizing the knowledge of how probability distributions map through hybrid transitions. Here, we make use of a propagation law that employs the saltation matrix (a first-order update to the sensitivity equation) to create the Salted Kalman Filter (SKF), a natural extension of the Kalman Filter and Extended Kalman Filter to hybrid dynamical systems. Away from hybrid events, the SKF is a standard Kalman filter. When a hybrid event occurs, the saltation matrix plays an analogous role as that of the system dynamics, subsequently inducing a discrete modification to both the prediction and update steps. The SKF outperforms a naive variational update - the Jacobian of the reset map - by having a reduced mean squared error in state estimation, especially immediately after a hybrid transition event. Compared a hybrid particle filter, the particle filter outperforms the SKF in mean squared error only when a large number of particles are used, likely due to a more accurate accounting of the split distribution near a hybrid transition." @default.
- W4287707986 created "2022-07-26" @default.
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- W4287707986 date "2020-07-23" @default.
- W4287707986 modified "2023-09-25" @default.
- W4287707986 title "The Salted Kalman Filter: Kalman Filtering on Hybrid Dynamical Systems" @default.
- W4287707986 doi "https://doi.org/10.48550/arxiv.2007.12233" @default.
- W4287707986 hasPublicationYear "2020" @default.
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