An instrument is described which produces random signals with a variable, controlled spectral distribution. The noise is generated digitally in a shift register. The spectrum shaping is digital, but supplemented by an analog filter of simple form. The instrument is used to reproduce random sea waves for model tests. Analysis of wave records shows that the movement of the sea surface has the form of Gaussian noise with a limited power frequency distribution or spectrum. The actual shape of the spectrum depends on the strength and duration of the winds which produce the waves.

  • Corporate Authors:

    International Association for Hydraulic Research

    Room 61, Box 177
    Delft,   Netherlands 
  • Authors:
    • FRYER, D K
    • Gilbert, G
    • Wilkie, M J
  • Publication Date: 1973

Media Info

  • Features: References;
  • Pagination: p. 193-204
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00054050
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Files: TRIS
  • Created Date: May 7 1974 12:00AM