Title
Quantification of Mismatch Error in Randomly Switching Linear State-Space Models
Abstract
Switching Kalman Filters (SKF) are well known for solving switching linear dynamic system (SLDS), i.e., piece-wise linear estimation problems. Practical SKFs are heuristic, approximate filters and require more computational resources than a single-mode Kalman filter (KF). On the other hand, applying a single-mode mismatched KF to an SLDS results in erroneous estimation. This letter quantifies the average error an SKF can eliminate compared to a mismatched, single-mode KF before collecting measurements. Derivations of the first and second moments of the estimators' errors are provided and compared. One can use these derivations to quantify the average performance of filters beforehand and decide which filter to run in operation to have the best performance in terms of estimation error and computation complexity. We further provide simulation results that verify our mathematical derivations.
Year
DOI
Venue
2021
10.1109/LSP.2021.3116504
IEEE SIGNAL PROCESSING LETTERS
Keywords
DocType
Volume
Superluminescent diodes, Kalman filters, Switches, Trajectory, Mathematical models, Dynamical systems, State-space methods, Switching Kalman filter, recursive estimation, detection, switching linear dynamic systems, model mismatch
Journal
28
ISSN
Citations 
PageRank 
1070-9908
0
0.34
References 
Authors
0
4
Name
Order
Citations
PageRank
Parisa Karimi100.34
Zhizhen Zhao2207.12
Mark D. Butala3244.80
F. Kamalabadi483.49