Accession Number:

AD0744688

Title:

Visibility Concepts and Measurement Techniques for Aviation Purposes

Descriptive Note:

Final rept.

Corporate Author:

TRANSPORTATION SYSTEMS CENTER CAMBRIDGE MA

Personal Author(s):

• Schappert, G. T.

Report Date:

1971-07-01

Pagination or Media Count:

110.0

Abstract:

The report reviews present techniques for measuring atmospheric transmittance and its conversion to runway visual range. The response of the pilot to visual cues used in determining the visibility is discussed as a function of his cockpit environment. The lights used by the FAA as targets for visibility determinations are discussed and used in the computations. New techniques for visibility measurements and new concepts and definitions are discussed and analyzed. The emphasis is on techniques for measuring slant visual range by means of optical remote sensing devices. Various problems relating to atmospheric modeling, signal processing, and eye safety aspects are discussed.

Descriptors:

• *VISIBILITY
• *AVIATION SAFETY
• *RUNWAYS
• OPTICAL RADAR
• MEASUREMENT
• OPTICAL EQUIPMENT
• SCATTERING
• DETECTORS
• REMOTE CONTROL
• HAZE
• AIRPORTS
• LIGHT TRANSMISSION
• PROCESSING
• ILLUMINATION
• BRIGHTNESS
• FOG
• SIGNALS

Subject Categories:

• Meteorology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE