Communications: directive radio wave systems and devices (e.g. – Combined with diverse type radiant energy system – With laser
Patent
1992-01-29
1992-11-17
Sotomayor, John B.
Communications: directive radio wave systems and devices (e.g.,
Combined with diverse type radiant energy system
With laser
356 5, 356 285, 342129, G01S 1324, G01C 308
Patent
active
051647338
ABSTRACT:
A laser beam is frequency shifted for use in a laser radar ranging system driving a single optical modulator with multiple drivers to produce several frequency shifted drive frequencies. The shifted beam is transmitted to and from a target via an afocal lens. The return reflected beam, which includes phase shifted information is mixed in a detector with the local oscillator frequency to remove the local oscillator frequency. The electrical output from the detector is filtered by bandpass filters and phase detected in a signal processor to obtain range information.
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Barr Dallas N.
Nettleton John E.
Bashore Alain L.
Lane Anthony T.
Lee Milton W.
Sotomayor John B.
The United States of America as represented by the Secretary of
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