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Distributed State Estimation for Sparse Stochastic Systems Based on Compressed Sensing
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DOI：10.1109/TCSII.2024.3372020.png)
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摘要
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This brief proposes a compressed distributed Kalman filter to cooperatively estimate the sparse state vector of a dynamic system with general stochastic coefficients. Based on the compressed sensing theory and the diffusion strategy, each sensor first compresses the original high-dimensional and sparse coefficient matrices via the sensing matrix. Then, each sensor diffuses the local innovation pairs with neighbors to obtain a distributed Kalman estimate in the compressed low-dimensional space. Subsequently, the original high-dimensional sparse state vector can be well recovered by the reconstruction technique. Under the compressed collective stochastic observability condition, the upper bound for the estimation error is established. Note that our theoretical results are established without such stringent conditions as independence or stationarity of the coefficient matrices and are thus applicable to feedback systems. Finally, a simulation example is given to illustrate our theoretical results.
Keyword:
Vectors
Sparse matrices
Kalman filters
Stochastic processes
Observability
Stability analysis
Covariance matrices
Sparse state estimation
distributed Kalman filter
compressed sensing
stochastic dynamic system
期刊
I
IF:
4.9
论文数:
8.8K
被引数:
2.5W
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Genetics
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