DocumentCode
745758
Title
Asymptotic Optimality of the Minimum-Variance Fixed-Interval Smoother
Author
Einicke, Garry A.
Author_Institution
CSIRO, Pullenvale, Qld.
Volume
55
Issue
4
fYear
2007
fDate
4/1/2007 12:00:00 AM
Firstpage
1543
Lastpage
1547
Abstract
This correspondence investigates the asymptotic performance of the discrete-time and continuous-time, time-varying, minimum-variance, fixed-interval smoothers. Comparison theorems are generalized to provide sufficient conditions for the monotonic convergence of the underlying Riccati equations. Under these conditions, the energy of the estimation errors asymptotically approach a lower bound and attain lscr2 /L2 stability
Keywords
Riccati equations; continuous time filters; discrete time filters; matrix algebra; smoothing methods; time-varying filters; Riccati equations; asymptotic optimality; continuous-time smoothers; discrete-time smoother; minimum-variance fixed-interval smoother; time-varying smoothers; Asymptotic stability; Convergence; Difference equations; Differential equations; Estimation error; Filtering; Noise measurement; Riccati equations; Smoothing methods; Sufficient conditions; Kalman filtering; Riccati equations; noncausal filtering; smoothing; stability;
fLanguage
English
Journal_Title
Signal Processing, IEEE Transactions on
Publisher
ieee
ISSN
1053-587X
Type
jour
DOI
10.1109/TSP.2006.889402
Filename
4133030
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