Title Data Fusion Based on Subspace Decomposition for Distributed State Estimation in Multi-Hop Networks
Authors RODRÍGUEZ DEL NOZAL, ÁLVARO, MILLÁN GATA, PABLO, ORIHUELA ESPINA, DIEGO LUIS, MILLÁN GATA, PABLO, ORIHUELA ESPINA, DIEGO LUIS, RODRÍGUEZ DEL NOZAL, ÁLVARO
External publication No
Means Sensors
Scope Article
Nature Científica
JCR Quartile 1
SJR Quartile 2
JCR Impact 3.27500
Area International
Web https://www.scopus.com/inward/record.uri?eid=2-s2.0-85059016136&doi=10.3390%2fs19010009&partnerID=40&md5=d0f9ab5a6753b0669c485872d28a3d35
Publication date 01/01/2019
ISI 000458574600009
Scopus Id 2-s2.0-85059016136
DOI 10.3390/s19010009
Abstract This paper deals with the problem of estimating the distributed states of a plant using a set of interconnected agents. Each of these agents must perform a real-time monitoring of the plant state, counting on the measurements of local plant outputs and on the exchange of information with the rest of the network. These inter-agent communications take place within a multi-hop network. Therefore, the transmitted information suffers a delay that depends on the position of the sender and receiver in a communication graph. Without loss of generality, it is considered that the transmission rate and the plant sampling rate are both identical. The paper presents a novel data-fusion-based observer structure based on subspace decomposition, and addresses two main subproblems: the observer design to stabilize the estimation error, and an optimal observer design to minimize the estimation uncertainties when plant disturbances and measurements noises come into play. The performance of the proposed design is tested in simulation.
Keywords distributed estimation; LTI-systems; kalman-filtering; data fusion; multi-hop networks
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