Chirp pulse echo ranging apparatus

Details Chirp pulse echo ranging apparatus Chirp pulse echo ranging apparatus

1988-08-15

1990-10-02

Buczinski, Stephen C.

Optics: measuring and testing

Range or remote distance finding

With photodetection

333151, 333152, 342111, 342132, 356 285, 367101, 367102, G01C 308, G01P 336

Patent

active

049603299

ABSTRACT:
The difficulty of making Doppler shift velocity measurements in a chirp pulse echo ranging system is overcome by employing a pulse frequency compression filter, suitably a SAW compressor 45, having individual outputs 64, 65, 66, 67 respectively relating to adjacent contiguous frequency bands A, B, C, D, (FIG. 3) each having a bandwidth approximately equal to the chirp frequency swing. Signal detection and processing means 70 senses the occurrence of a compressed pulse on any of the outputs and measures the amplitudes of signals on all the outputs. A computer then computes the Doppler shift from the amplitude ratio of the sensed signals to adjacent frequency bands, determines the target velocity therefrom and uses the result also to correct the range measured by the counter 5.

REFERENCES:
patent: 3800247 (1974-03-01), Tancrell et al.
patent: 4005417 (1977-01-01), Collins
patent: 4666295 (1987-05-01), Duvall, III et al.
patent: 4743110 (1988-05-01), Arnaud et al.
Hulme et al., "A CO.sub.2 Laser Rangefinder Using Heterodyne Detection and Chirp Pulse Compression," Optical and Quantum Electronics, 1981, pp. 35 & 36.

Affiliated with

Also associated with

Rating

Chirp pulse echo ranging apparatus 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 pulse echo ranging apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Chirp pulse echo ranging apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-289507