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Iterative Smoother-Based Variance Estimation

delete2012-05-01
delete8
PRE
AI
G
Garry Einicke *
G
Gianluca Falco
M
Mark Dunn
D
D. Reid
DOI:10.1109/LSP.2012.2190278delete
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Abstract

Abstract

En 中文
The minimum-variance smoother solution for input estimation is described and it is shown that the resulting estimates are unbiased. The smoothed input and state estimates are used to iteratively identify unknown process noise variances. The use of smoothed estimates, as opposed to filtered estimates, leads to improved approximate Cramer-Rao lower bounds for the unknown parameters. It is also shown that the sequence of iterates are monotonic and asymptotically approach the actual values under prescribed conditions. A nonlinear mining navigation application is described in which unknown parameters are estimated.
Keywords:
EM algorithms
Kalman filtering
smoothing
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Journal

IEEE Signal Processing Magazine cover
IEEE Signal Processing Magazine
IF:
9.6
Papers:
1.1W
Citations:
1.7W

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Cited Papers

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