Optics: measuring and testing – Velocity or velocity/height measuring – With light detector
Patent
1990-01-24
1991-03-19
Tarcza, Thomas H.
Optics: measuring and testing
Velocity or velocity/height measuring
With light detector
356 4, G01P 336
Patent
active
050005677
ABSTRACT:
A laser radar system for detecting objects transmits a laser beam which is frequency modulated by the motion of scanning mirrors, which scan the beam across an object to be imaged. The return beam, reflected by the object, is combined with the local oscillator beam, and the frequency difference is detected. This frequency difference is obtained by the Doppler induced frequency modulation which results from the motion of the scanning mirrors. A signal corresponding to this frequency difference may be provided to the x axis of an oscilloscope for displaying the image. The x and y axis outputs of the oscilloscope are supplied with signals used to control the scanning of the x and y-scanning mirrors, to synchronize display with the scanning of the object.
REFERENCES:
patent: 3615135 (1971-10-01), Frazer
patent: 3897150 (1975-07-01), Bridges et al.
patent: 3968362 (1976-07-01), Mocker
patent: 4042822 (1977-08-01), Brandewie et al.
patent: 4201468 (1980-05-01), Margolis et al.
patent: 4209253 (1980-06-01), Hughes
patent: 4236819 (1980-12-01), Green
patent: 4311384 (1982-01-01), Keene
patent: 4340299 (1982-07-01), Mongeon
patent: 4655588 (1987-04-01), Chenausky et al.
patent: 4666295 (1987-05-01), Duvall, III et al.
patent: 4721385 (1988-01-01), Jelalian et al.
patent: 4743110 (1988-05-01), Arnaud et al.
patent: 4810088 (1989-03-01), Karning et al.
patent: 4830486 (1989-05-01), Goodwin
patent: 4846571 (1989-07-01), Jelalian et al.
patent: 4850041 (1989-07-01), Roberts et al.
M. C. Teich, "Three-Frequency Heterodyne System for Acquisition and Tracking of Radar and Communications Signals", APL, vol. 15, Dec., 1969.
Mark L. Fleshner and Shelly S. Eucker, "Construction of a Three-Frequency CO2 Laser Radar Breadboard Using FM Chirped Pulse Compression", IRIS Active Systems National Conference, Boulder, CO, Oct. 1988.
C. G. Bachman, "Laser Radar Systems and Techniques", Artech House, Inc., Dedham, Mass., 1979.
Hellner Mark
Tarcza Thomas H.
The Boeing Company
LandOfFree
Laser radar system for detecting an object does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Laser radar system for detecting an object, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Laser radar system for detecting an object will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2005548