Wind shear detection

Details Wind shear detection Wind shear detection

1983-06-28

1986-04-29

Buczinski, S. C.

Optics: measuring and testing

Velocity or velocity/height measuring

With light detector

356342, G01P 336, G01N 2100

Patent

active

045853410

ABSTRACT:
An apparatus for the early detection of oncoming wind shear, without false indications arising through turbulence. A forward looking laser speed sensor (11) provides a signal (12) containing information on air velocity over a range of distances about a measurement distance (X). This is subject to spectrum analysis (15), to identify all velocities present in a time sample of the signal (12). These velocities are further processed (17) to establish the air velocity at substantially the measurement distance (X), and the highest and lowest velocities present over a distance range (L). A time sequence of results is combined to provide a wind shear hazard level for comparison with a hazard level limit computed (13) from the prevailing conditions.

REFERENCES:
patent: 3856402 (1974-12-01), Low et al.
patent: 3984685 (1976-10-01), Fletcher et al.
patent: 3984686 (1976-10-01), Fletcher et al.
patent: 4167329 (1979-09-01), Jelalian et al.
patent: 4359640 (1982-11-01), Geiger
patent: 4483614 (1984-11-01), Rogers
A. J. Hughes et al., "Long Range Anemometry Using a CO.sub.2 Laser," Opto-Electronics, vol. 4, pp. 379-384, 1972.
B. LeBoss, "News Update," Electronics, vol. 50, No. 6, p. 8.
"Effet Doppler et Laser pour Detector les Turbulences," Mesures-Regulation-Automatisme, 9/81, p. 63.

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