Visibility Measurement for Aircraft Landing Operations.

Abstract

An experimental pulsed neodymium lidar system was modified and calibrated to obtain accurate data on atmospheric extinction properties in fog and low cloud conditions. The objective was to establish the theoretical and practical basis of a system for measuring slant visibility conditions for aircraft landing operations. To operate in conditions of fog and low cloud the lidar system's dynamic range was extended to 50 dB by using a two-stage receiver system. In addition, the transmitter and receiver beams were made coaxial to make close-range observations. (Author)

Document Details

Document Type
Technical Report
Publication Date
Sep 30, 1970
Accession Number
AD0716483

Entities

People

  • Edward E. Uthe
  • John Oblanas
  • Ronald T. H. Collis
  • William Viezee

Organizations

  • SRI International

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Aircraft Landings
  • Aircrafts
  • Dynamic Range
  • Extinction
  • Landing
  • Measurement
  • Military Aircraft
  • Neodymium
  • Observation
  • Observation Aircraft
  • Transmitters
  • Vehicles
  • Visibility

Fields of Study

  • Physics

Readers

  • Atmospheric Remote Sensing.
  • Aviation Safety and Air Traffic Management
  • Optical Physics and Photonics.