Dynamic Positioning Systems installed in marine vessels require a filtering block to attenuate the wave frequency components captured by the position and heading sensors. In this paper a filtering algorithm based on the Empirical Mode Decomposition (EMD) is suggested. The EMD is an algorithm that claims to properly identify the time scales featuring the physical characteristics of any given system by analyzing a time series representative of the system dynamics. It can handle both non stationary and non linear signals and it requires no previous knowledge on the system dynamics. Details of the algorithm are provided and the results obtained from simulation and experimental tests are presented.

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