Accession Number : AD0773830

Title :   Prediction of Optical Landing Guidance System Performance in Cat. III-a Minimum Weather.

Descriptive Note : Technical note,

Corporate Author : MASSACHUSETTS INST OF TECH LEXINGTON LINCOLN LAB

Personal Author(s) : Kocher,David G.

Report Date : 08 NOV 1973

Pagination or Media Count : 38

Abstract : NOTE,Kocher,David G. ;TN-1973-47F19628-73-C-0002AF-649LESDTR-73-258*Landing aids, Lasers, Optical equipment, Landing, Visibility, Air traffic control terminal areas, Glide path systems, Feasibility studiesThe feasibility of using a laser optical system to provide precision guidance for the final two miles of aircraft landing approaches in low visibility weather is examined. Since low visibility is caused most frequently by clouds and fog, approximate calculations of the optical signal, scattered light and noise are made as a function of range for various cloud and fog densities. It is concluded that with current laser technology, performance of an optical landing guidance system would be inadequate in the presence of Category III-a minimum visibility clouds and fogs. (Author)

Descriptors :   *LANDING AIDS, LASERS, OPTICAL EQUIPMENT, LANDING, VISIBILITY, AIR TRAFFIC CONTROL TERMINAL AREAS, GLIDE PATH SYSTEMS, FEASIBILITY STUDIES

Subject Categories : Air Navigation and Guidance

Distribution Statement : APPROVED FOR PUBLIC RELEASE