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Proceedings Paper

Laser centerline localizer and laser glideslope indicator for visual guidance on approach to landing
Author(s): David M. Shemwell; Alan A. Vetter; R. I. Gellert
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Paper Abstract

The Laser Centerline Localizer (LCL) and the laser Glideslope Indicator (LGI) use a series of low power, but highly visible laser beams to illuminate approach corridors for carrier flight operations. By taking advantage of the ability to precisely shape and direct visible laser beams and by encoding the illuminated paths using color and temporal frequency, direct visual signals which provide a positive on course signal as well as an indication of the direction and degree of deviation from the proper approach are seen by the pilot. The LCL provides centerline guidance and the LGI provides descent guidance. This laser visual landing aid (LVLA) system provides the pilot with significantly improved visual cues to aid in the safe landing of the aircraft. The LCL and LGI units have been constructed and field tested. The ability to guide pilots from a range of over 15 miles has been demonstrated.

Paper Details

Date Published: 1 July 1992
PDF: 8 pages
Proc. SPIE 1694, Sensors and Sensor Systems for Guidance and Navigation II, (1 July 1992); doi: 10.1117/12.138131
Show Author Affiliations
David M. Shemwell, Humbug Mountain Research Labs. (United States)
Alan A. Vetter, Humbug Mountain Research Labs. (United States)
R. I. Gellert, Humbug Mountain Research Labs. (United States)


Published in SPIE Proceedings Vol. 1694:
Sensors and Sensor Systems for Guidance and Navigation II
Sharon S. Welch, Editor(s)

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