Digital Simulation of Narrow-Band Ocean Systems

Truncated expansions based upon the sampling theorem but containing only a few terms can be very useful for practical interpolations of band-limited or narrow-band random signals. The major goal of this work is to find and compare efficient and "statistically accurate" algorithms for the dynamic analysis of the ocean systems. The statistical accuracy of truncated sampling interpolations is investigated, and one simple ocean system, which yields a Runge-Kutta simulation algorithm of improved accuracy with very little increase in computation, is shown with actual wave-force data.