Linear Prediction Theory for Digital Simulation of Sea Waves

[+] Author and Article Information
P.-T. D. Spanos, J. E. Hansen

The University of Texas at Austin, Austin, Tex. 78712

J. Energy Resour. Technol 103(3), 243-249 (Sep 01, 1981) (7 pages) doi:10.1115/1.3230845 History: Received October 17, 1980; Revised June 01, 1981; Online October 22, 2009


Most of the currently used algorithms for numerical generation of sea wave records which are compatible with a specified power spectrum are based on the super-position of several harmonic waves. This article presents an alternative method of simulation. The basis of the method is the Linear Prediction Theory (LPT) which has been extensively used in processing digital data in other technical fields. Specifically, records of sea waves which are compatible with the target spectrum are obtained as the output of a recursive digital filter to a white noise input. A procedure for determining the filter parameters is discussed. Several numerical examples are presented.

Copyright © 1981 by ASME
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