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EM Algorithm State Matrix Estimation for Navigation

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3 Author(s)
Einicke, G.A. ; Commonwealth Sci. & Ind. Res. Organ. (CSIRO), Pullenvale, QLD, Australia ; Falco, G. ; Malos, J.T.

The convergence of an expectation-maximization (EM) algorithm for state matrix estimation is investigated. It is shown for the expectation step that the design and observed error covariances are monotonically dependent on the residual error variances. For the maximization step, it is established that the residual error variances are monotonically dependent on the design and observed error covariances. The state matrix estimates are observed to be unbiased when the measurement noise is negligible. A navigation application is discussed in which the use of estimated parameters improves filtering performance.

Published in:

Signal Processing Letters, IEEE  (Volume:17 ,  Issue: 5 )

Date of Publication:

May 2010

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