Decentralized Fixed-Interval Smoothing Algorithms

[+] Author and Article Information
Keigo Watanabe

Department of Aeronautical Engineering, Kyushu University 36, Hakozaki 6-10-1, Fukuoka 812, Japan

J. Dyn. Sys., Meas., Control 108(1), 86-89 (Mar 01, 1986) (4 pages) doi:10.1115/1.3143748 History: Received November 22, 1985; Online July 21, 2009


The Weineret-Desai smoother formula is applied to derive new decentralized fixed-interval smoothing algorithms for a decentralized estimation structure consisting of a central processor and of M local processors. Such algorithms are based on decentralizing the estimates of global backward information filter and obtained from the use of the superposition principle in scattering framework. The smoothing update problem is also investigated to illustrate the application of the proposed algorithms. The emphasis is on computational efficiency, independence of local a priori statistics, and flexibility of implementation.

Copyright © 1986 by ASME
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