Method for determining a visual range

Details Method for determining a visual range Method for determining a visual range

1994-01-12

1996-02-06

Buczinski, Stephen C.

Optics: measuring and testing

Range or remote distance finding

With photodetection

356 407, 356 506, G01C 308

Patent

active

054899826

ABSTRACT:
A method for determining the visual range improves the visual range measurement adopted as a basis, to the end that the measurement of the visual range can take place using one emitter and using one receiver, which are disposed to be stationary. The method permits the determination of the visual range, even though an obstacle is situated within the field of view. A comparison of a measured backscatter signal with a specimen curve permits the determination of the visual range from the intensity curve obtained, without any need, for this purpose, of further information such as, for example, the direction from which the backscatter signal comes.

REFERENCES:
patent: 3519354 (1970-07-01), Brown, Jr. et al.
patent: 3782824 (1974-01-01), Stoliar et al.
patent: 4502782 (1985-03-01), Werner et al.
patent: 4605302 (1986-08-01), Lofgren et al.
patent: 4699507 (1987-10-01), Etoh
patent: 4722599 (1988-02-01), Fruengel et al.
Applied Optics, vol. 24, No. 21, pp. 3523-3525 entitled "Visibility Related To Backscatter at 1.06 .mu.m" by T. L. Barber & D. R. Larson

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