Algorithms for Computation of Water Level Elevation at a Fixed Location from the Water Level Elevations at a Moving Platform.

Abstract

This document provides analytical algorithms for computation of water level elevation time series at a fixed location from water level measurements made on a moving a ocean platform. The algorithms are based on geostatistical techniques, including kriging methods and conditional simulation. Wave or water elevation time histories are usually measured from a fixed reference location. Wave elevation measurements made using a wave measurement attached to a floating ocean platform need to be corrected for the motions of the platform. Most computer simulation programs, including the conditional wave model require wave input for a fixed reference location. The report presents the two basic methods (kriging and conditional simulation), develops a rapid procedure for computing the wave elevation covariance matrix for both methods, and concludes that the kriging method is the better choice. Keywords: Ocean wave kinematics; Statistical analysis estimates; Bessel functions; Fast fourier transforms; Kriging procedures; Directional wave spectra. (edc)

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1989
Accession Number
ADA207628

Entities

People

  • Leon E. Borgman

Tags

Communities of Interest

  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Abstracts
  • Algorithms
  • Bessel Functions
  • Civil Engineering
  • Computations
  • Computer Simulations
  • Contracts
  • Covariance
  • Elevation
  • Engineering
  • Equations
  • Fast Fourier Transforms
  • Frequency
  • Ocean Waves
  • Platforms
  • Simulations
  • Statistical Analysis

Readers

  • Adaptive Control and Estimation with Uncertainty in Dynamic Systems.
  • Approximation Theory.
  • Geodesy