Chirp and Doppler optical gauge

Details Chirp and Doppler optical gauge Chirp and Doppler optical gauge

1987-09-30

1989-08-29

Buczinski, Stephen C.

Optics: measuring and testing

Range or remote distance finding

With photodetection

342 83, 342 84, 342 99, 342132, 356 285, G01C 308

Patent

active

048611581

ABSTRACT:
A laser distance gauge measures the distance and shape of a target by alternately performing (a) a Doppler shift measurement during optical scanning of the target's surface and/or motion of the target and (b) a chirp measurement with a chirp frequency laser signal. To ascertain changes in radial distance from the gauge to the target, the Doppler shift information is integrated and the result is combined with absolute distance measurements made in the chirp mode. A single CW laser, which operates single frequency, serves for both types of measurement. A computer changes the gauge from Doppler mode to chirp mode when the Doppler shift reaches a predetermined amount. When a chirp measurement of absolute distance is completed it reverts to Doppler mode.

REFERENCES:
patent: 4167329 (1979-09-01), Jelalian et al.
patent: 4721385 (1988-01-01), Jelalian et al.

Affiliated with

Also associated with

Rating

Chirp and Doppler optical gauge does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Chirp and Doppler optical gauge, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Chirp and Doppler optical gauge will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2233972