Undersea ranging-communications from altitude via laser

Details Undersea ranging-communications from altitude via laser Undersea ranging-communications from altitude via laser

1976-07-02

1977-09-27

Corbin, John K.

Optics: measuring and testing

Infrared and ultraviolet

250199, 356 5, H04B 900, G01C 308

Patent

active

040508196

ABSTRACT:
An optical means for detecting and/or communicating with underwater objects rom airborne platforms wherein a number of laser sources are collimated so as to illuminate a particular portion of the ocean surface from the airborne platform. Thereafter, use is made of the non-linear optical phenomena resulting from the interaction of the various source characteristics (power and wavelength) with the water media to detect modulation of the specularly reflected energy to provide indications of the presence of submerged objects.

REFERENCES:
patent: 3446555 (1969-05-01), Kahn
patent: 3604803 (1971-09-01), Kahn
patent: 3869618 (1975-03-01), Lax et al.

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