A SLANT VISUAL RANGE/APPROACH LIGHT CONTACT HEIGHT SYSTEM --- AIRPORT. TRANSMISSIOMETERS FOR FOG MEASUREMENTS

A prototype slant visual range/approach light contact height (SVR/ALCH) facility was installed to determine whether or not a combination of presently off-the-shelf equipment could be used to predict slant path visibility. The primary system evaluated was a 100-foot instrumented tower located 1500 feet from each of two 160-ft towers with horizontal transmissometers mounted at six levels. The instrumented tower provided data from a forward scatter meter located at the 100-ft level and a transmissometer at the 5-ft level. Vertical fog structure measurements are described. A comparison is given of horizontal and slant visual range for advective fogs, the psychophysical aspects of SVR and ALCH are discussed, and the SVR/ALCH algorithm is explained. It is concluded that the candidate system will determine slant path transmission and adaptation luminance, but not slant path visual range.

  • Supplemental Notes:
    • From the conference on Aerospace and Aeronautical Meteorology (6th), El Paso, Texas, 12-15 November 1974.
  • Corporate Authors:

    American Meteorological Society

    45 Beacon Street
    Boston, MA  USA  02108
  • Authors:
    • Lohkamp, C W
  • Publication Date: 1974

Media Info

  • Pagination: 4 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00163482
  • Record Type: Publication
  • Source Agency: International Aerospace Abstracts
  • Report/Paper Numbers: Proceeding
  • Files: TRIS
  • Created Date: Sep 28 1977 12:00AM