Measurement of visibility at airports
Abstract
The parameters which determine the visibility of a target are the photometric and dimensional characteristics of the target, the conditions of visual perception, and light transmission through the atmosphere between target and observer. A visibility meter (transmission meter) called LYNX is described. It measures the atmospheric attenuation coefficient of light, and consists of a light source, an optical fiber waveguide, and two control loops. The visibility meter HELIOS is also described. Airport and non-airport applications of visibility meters are discussed, with the primary airport application being the measurement of fog conditions at landing.
- Publication:
-
La Meteorologie
- Pub Date:
- November 1975
- Bibcode:
- 1975Meteo.......23B
- Keywords:
-
- Airports;
- Atmospheric Attenuation;
- Light Transmission;
- Target Acquisition;
- Transmissometers;
- Visibility;
- Fog;
- Optical Measuring Instruments;
- Technology Utilization;
- Transmissivity;
- Visual Perception;
- Instrumentation and Photography