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Design of inertial navigation systems for marine craft with adaptive wave filtering aided by triple‐redundant sensor packages
Author(s) -
Bryne Torleiv H.,
Fossen Thor I.,
Johansen Tor A.
Publication year - 2017
Publication title -
international journal of adaptive control and signal processing
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.73
H-Index - 66
eISSN - 1099-1115
pISSN - 0890-6327
DOI - 10.1002/acs.2645
Subject(s) - inertial navigation system , inertial measurement unit , observer (physics) , inertial frame of reference , control theory (sociology) , heading (navigation) , engineering , dead reckoning , computer science , control engineering , artificial intelligence , aerospace engineering , physics , telecommunications , global positioning system , control (management) , quantum mechanics
Summary Marine craft feedback control systems typically require estimates of position, velocity and heading where the wave‐induced motions should be suppressed. This paper presents a strapdown inertial navigation system with adaptive wave filtering. Wave filtering based on inertial navigation systems differ from previous vessel‐model‐based designs that require knowledge of vessel parameters and mathematical models for estimation of thruster and wind forces and moments based on auxiliary sensors. The origin of the inertial navigation system's error states is proven to be uniformly semiglobally exponentially stable. The wave‐filtering scheme uses the estimated states of the inertial navigation system to separate the low‐frequency motion of the craft from the wave‐frequency motions. The observer structure also allows for estimation of the time‐varying encounter frequency by using a signal‐based frequency tracker or an adaptive observer. Finally, properties following from the triple‐redundant sensor packages have been utilized to obtain optimal and robust sensor fusion with respect to sensor performance and faults. Copyright © 2015 John Wiley & Sons, Ltd.