THE ARTIFICIAL GENERATION OF ROAD SURFACE TOPOGRAPHY BY THE INVERSE FFT METHOD

Techniques are presented for the digital simulation of the height profiles of a number of correlated parallel tracks and of an entire two-dimensional random road surface. It is shown that the profiles of a number of correlated tracks may be generated by using the one-dimensional discrete Fourier transform, but, in order to generate a fully isotropic surface, it is necessary to use two-dimensional Fourier transform methods and these are discussed in detail. A sample two-dimensional isotropic road surface is generated from an experimentally determined one-dimensional spectral density and its one-dimensional statistics are compared with those of the original displacement data. For the covering abstract of the conference see TRIS 395019. (Author/TRRL)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/9026504616
• Supplemental Notes:
  • Papers from the Proceedings of the 8th IAVDS Symposium, the Dynamics of Vehicles of Roads and Railway Tracks, held at Massachusetts Institute of Technology, Cambridge, Massachusetts, August 15-19, 1983.
• Corporate Authors:

  Swets & Zeitlinger

  Heereweg 347B
  2161 CA Lisse,   Netherlands 
• Authors:
  • Cebon, D
  • NEWLAND, D E
• Conference:
  • Papers from the Proceedings of the 8th IAVDS Symposium, the Dynamics of Vehicles of Roads and Railway Tracks, held at Massachusetts Institute of Technology, Cambridge, Massachusetts, August 15-19, 1983.
• Publication Date: 1984

Media Info

• Features: Figures; References;
• Pagination: p. 29-42

Subject/Index Terms

• TRT Terms: Conferences; Density; Digital computers; Electromagnetic spectrum; Fourier transforms; Isotropy; Mathematical models; Rutting; Simulation; Surface course (Pavements); Surfacing; Wear
• Uncontrolled Terms: Longitudinal profile
• Geographic Terms: United Kingdom
• ITRD Terms: 8525: Conference; 5908: Density; 8673: Digital computer; 5917: Isotropic; 2825: Longitudinal profile; 6473: Mathematical model; 3081: Rutting (wheel); 9103: Simulation; 6776: Spectrum; 2972: Surfacing; 8119: United Kingdom; 5293: Wear
• Subject Areas: Highways; Pavements; I23: Properties of Road Surfaces;

Filing Info

• Accession Number: 00395020
• Record Type: Publication
• Source Agency: Institute for Road Safety Research, SWOV
• ISBN: 90-265-0461-6
• Files: ITRD, TRIS
• Created Date: Oct 31 1985 12:00AM