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Adaptive second-order Volterra filtering and its application to second-order drift phenomena

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5 Author(s)
Kiho Kim ; Offshore Technol. Center, Texas Univ., Austin, TX, USA ; Sung Bae Kim ; Powers, E.J. ; Miksad, R.W.
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This paper presents an adaptive second-order Volterra filter and its application to model-test data of a prototype tension leg platform (TLP). The least-squares approach of a second-order Volterra model and its adaptive filtering algorithm based on recursive least-squares are introduced. The second-order Volterra filter is applied to identify the linear and quadratically nonlinear relationship between irregular sea wave excitation and the surge response of a tension leg platform. Next, a deconvolution technique, based on the impulse invariance standard Z-transform, is utilized to recover the linear and quadratic forces exerted on the TLP

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Oceanic Engineering, IEEE Journal of  (Volume:19 ,  Issue: 2 )