Title
Distributed methods for synchronization of orthogonal matrices over graphs.
Abstract
This paper addresses the problem of synchronizing orthogonal matrices over directed graphs. For synchronized transformations (or matrices), composite transformations over loops equal the identity. We formulate the synchronization problem as a least-squares optimization problem with nonlinear constraints. The synchronization problem appears as one of the key components in applications ranging from 3D-localization to image registration. The main contributions of this work can be summarized as the introduction of two novel algorithms; one for symmetric graphs and one for graphs that are possibly asymmetric. Under general conditions, the former has guaranteed convergence to the solution of a spectral relaxation to the synchronization problem. The latter is stable for small step sizes when the graph is quasi-strongly connected. The proposed methods are verified in numerical simulations.
Year
DOI
Venue
2017
10.1016/j.automatica.2017.02.025
Automatica
Keywords
DocType
Volume
Multi-agent systems,Distributed optimization,Sensor networks,Consensus algorithms,Robust estimation,Measurement and instrumentation
Journal
80
Issue
ISSN
Citations 
1
0005-1098
2
PageRank 
References 
Authors
0.37
17
3
Name
Order
Citations
PageRank
Johan Thunberg113819.15
Florian Bernard220.37
Goncalves, J.340442.24