Retro-reflecting laser responser and data modulator

Details Retro-reflecting laser responser and data modulator Retro-reflecting laser responser and data modulator

1974-12-13

1976-11-02

Wilbur, Maynard R.

Radiant energy

Ionic separation or analysis

Static field-type ion path-bending selecting means

250203R, 343 18D, 356152, H04B 900

Patent

active

039899420

ABSTRACT:
A retro-reflecting laser responser for applications such as IFF and other secure data link applications. A remote (airborne for example) responser, either manually directed or with automatic search and tracking functions, orients its relatively narrow aperture toward the source (a ground laser beacon, for example) of coded interrogation laser beam signals. The remote equipment includes a telescope, preferably of the Cassegrainian type, two-coordinate tracking features, means for recognizing the received beacon coding and for enabling the telescope to reflect the ground transmission. An electro-optic modulation is provided so that the reflected laser energy may be modulated to provide a communication data link back to the source of the laser pulse transmissions.

REFERENCES:
patent: 2956472 (1960-10-01), Hildebrand
patent: 3344420 (1967-09-01), Arsove
patent: 3504182 (1970-03-01), Pizzurro et al.
patent: 3511998 (1970-05-01), Smokler
patent: 3551050 (1970-12-01), Thorlin
patent: 3863064 (1975-01-01), Doyle et al.

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