Distributed fusion white noise deconvolution estimators |
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Authors: | Xiaojun Sun and Zili Deng |
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Affiliation: | (1) Department of Automation, University of Heilongjiang, Harbin, 150080, China |
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Abstract: | The white noise deconvolution or input white noise estimation problem has important applications in oil seismic exploration,
communication and signal processing. By combining the Kalman filtering method with the modern time series analysis method,
based on the autoregressive moving average (ARMA) innovation model, new distributed fusion white noise deconvolution estimators
are presented by weighting local input white noise estimators for general multisensor systems with different local dynamic
models and correlated noises. The new estimators can handle input white noise fused filtering, prediction and smoothing problems,
and are applicable to systems with colored measurement noise. Their accuracy is higher than that of local white noise deconvolution
estimators. To compute the optimal weights, the new formula for local estimation error cross-covariances is given. A Monte
Carlo simulation for the system with Bernoulli-Gaussian input white noise shows their effectiveness and performance. |
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Keywords: | multisensor information fusion deconvolution white noise estimator seismology modern time series analysis method Kalman filtering method |
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