A Comprehensive Frequency Domain Identification of a Coastal Patrol Vessel

A Comprehensive Frequency Domain Identification of a Coastal Patrol Vessel

In This paper detailed frequency-domain system identification method is applied to identify steering dynamics of a naval coastal patrol vessel using a data analysis software tool,called CIFER. Advanced features such as Chirp-Z transform and composite windowing techniques are used to extract high qualityfrequency responses. An accurate, linear and robust transfer function models are derived for yaw and roll dynamics of the vessel. In addition, to evaluate the accuracy of the identifiedmodel, time-domain responses from a 45-45 zig-zag test are compared with the responses predicted by the identified model.The model shows excellent predictive capability that is well suited for simulation applications as well as control design