Far field target designators

Details Far field target designators Far field target designators

1979-07-30

1981-03-31

Buczinski, Stephen C.

Optics: measuring and testing

Range or remote distance finding

With photodetection

244 316, 350163, 356349, 362259, G01C 300, G01C 500, G02B 2700, F41G 726

Patent

active

042590094

ABSTRACT:
A target designation system is created by use of a dual-beam illumination bsystem of coherent light. One beam is shifted a discrete frequency level from the other beam. The beams diverge from the source until they overlap on the desired target. The difference in frequency when the beams overlap creates an interference pattern composed of moving fringes which scan across the target. Various receiver systems can be used to identify the scanning fringes and mark the target. In addition, without the use of a receiver subsystem, the illuminations subsystem can still be used as a ranging device which can be tuned to identify range to an object by adjustment of the beams until a maximum intensity moving fringe pattern is observed.

REFERENCES:
patent: 3512888 (1970-05-01), Humphrey
patent: 3523732 (1970-08-01), Mary
patent: 3649125 (1972-03-01), Lehmann
patent: 3695749 (1972-10-01), Stapleton
patent: 3696248 (1972-10-01), Cunningham et al.
patent: 3741654 (1973-06-01), Brenholdt
patent: 3832059 (1974-08-01), Iten
patent: 3953128 (1976-04-01), Holly
patent: 4010689 (1977-03-01), Sochard et al.
patent: 4047117 (1977-09-01), Tuchyner et al.

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