Sensing vertical and horizontal visibility

Details Sensing vertical and horizontal visibility Sensing vertical and horizontal visibility

1982-09-20

1985-05-28

Groody, James J.

Communications: electrical

Aircraft alarm or indicating systems

Land-based landing guidance

73170R, 356 4, G08G 500

Patent

active

045203601

ABSTRACT:
Unattended measurements of horizontal and vertical visibility are broadcast, along with the results of time trend analysis so as to provide for short-term prediction of visibility. A calibration mechanism is provided along with sensors to determine mis-alignment of the apparatus. Broadcast information is particularly useful to pilots approaching unattended airports for landing.

REFERENCES:
patent: Re21838 (1941-06-01), Buckley
patent: 3299769 (1967-01-01), Byers
patent: 3406387 (1968-10-01), Werme
patent: 3963347 (1976-06-01), Segre
patent: 4288158 (1981-09-01), Frungel
patent: 4289397 (1981-09-01), Itzkan
patent: 4295139 (1981-10-01), Arpino
patent: 4318076 (1982-03-01), Whitfield
patent: 4369425 (1983-01-01), Andersen
patent: 4403862 (1983-09-01), Lofgren
patent: 4419731 (1983-12-01), Puffett
patent: 4422041 (1983-12-01), Lienau
Skopograph, brochure by Impulsphysik GmbH.
Laser-Ceilograph, brochure by Impulsphysik GmbH.

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