Analog visibility computer

Details Analog visibility computer Analog visibility computer

1975-12-08

1977-03-01

Atkinson, Charles E.

Registers

Transfer mechanism

Traveling pawl

356103, G01V 128, G01N 2100

Patent

active

040103579

ABSTRACT:
The computation of visual range is performed by a compact and comparatively inexpensive analog circuit which receives, as primary input information, a signal corresponding to atmosphere extinction coefficient. The circuit simultaneously solves Allard's and Koshmieder's equations and provides an output voltage, corresponding to the instantaneous visual range, by sampling the output of a ramp voltage generator upon solution of both equations.

REFERENCES:
patent: 3501239 (1970-03-01), Rouet
patent: 3510225 (1970-05-01), Collis
patent: 3519354 (1970-07-01), Brown, Jr. et al.
patent: 3651252 (1972-03-01), Land et al.
patent: 3668674 (1972-06-01), Westendorf
patent: 3745350 (1973-07-01), Hill et al.
patent: 3746452 (1973-07-01), Teboul et al.
patent: 3758211 (1973-09-01), Bateman et al.
patent: 3782824 (1974-01-01), Stoliar et al.
patent: 3788745 (1974-01-01), Menke
Instruments for the Measurement of the Visual Range; Beuttell et al; Journal of Scientific Instruments; Nov. 1949; vol. 26 pp. 357-359.
Harrower; Runway Visual Range, Slant Visual Range and Meteorological Visibility; Meteorological Magazine (British); Jan, 1963 pp. 26-34.

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