LASER DIODE RADAR WITH EXTENDED RANGE
Assignee
PERKIN-ELMER CORPORATION, THE, A CORP. OF NEW YORK
Filed
Jan 16, 1990
Granted
Jan 14, 1997
Location
BETHEL CT US
Abstract
An optical radar system includes a laser diode and an external cavity formed by a partial reflector for reflecting a first portion of the laser beam back into the diode. A second portion of the beam is passed out of the external cavity for backscatter thereof from a target back into the diode. The emission thereby has a beat frequency related to the velocity of the target. A frequency chirp is introduced by mechanically oscillating the partial reflector longitudinally resulting in a modulation frequency in the emission corresponding to the range of the target. A photodetector and processor are used to determine the velocity and range.
Source: Google Patents
35 USC §181 Secrecy Order
Imposed
Aug 23, 1990
Rescinded
Apr 19, 1996
Duration
5 years, 8 months
Inventor
- 1PETER DE GROOT
Technology Domains
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Record Details
- Patent number
- US 5594543
- Application
- 07464797
- Aerospace match
- Yes
- Dataset source
- 35 USC §181 SO records
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