System and method for measuring velocity using frequency...

Optics: measuring and testing – Velocity or velocity/height measuring – With light detector

Reexamination Certificate

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C356S005090, C356S028000

Reexamination Certificate

active

06885438

ABSTRACT:
The invention relates to a system for measuring velocity. In one aspect of the invention, the system comprises a laser emitting device, an optics assembly, a combiner and a signal processor. The laser emitting device generates a frequency-modulated laser signal. The optics assembly splits the frequency modulated signal into a plurality of laser signals, and directs the split signals to a target and receives at least one signal reflected from the target. The combiner receives one of the split signals transmitted via one signal path and the at least one reflected signal transmitted via another signal path, and multiplies the received signals. The signal processor extracts velocity information from the multiplied signal.

REFERENCES:
patent: 3915572 (1975-10-01), Orloff
patent: 4594000 (1986-06-01), Falk et al.
patent: 4611912 (1986-09-01), Falk et al.
patent: 4846571 (1989-07-01), Jelalian et al.
patent: 4902125 (1990-02-01), Keene et al.
patent: 5029999 (1991-07-01), Kremer et al.
patent: 5088815 (1992-02-01), Garnier et al.
patent: 5164784 (1992-11-01), Waggoner
patent: 5170218 (1992-12-01), Keene
patent: 5216477 (1993-06-01), Korb
patent: 5267010 (1993-11-01), Kremer et al.
patent: 5274361 (1993-12-01), Snow
patent: 5394233 (1995-02-01), Wang
patent: 5500729 (1996-03-01), Redman et al.
patent: 5587785 (1996-12-01), Kato et al.
patent: 5610705 (1997-03-01), Brosnan et al.
patent: 5838439 (1998-11-01), Zang et al.
patent: 6040898 (2000-03-01), Mrosik et al.
patent: 6100965 (2000-08-01), Nerin
patent: 6133993 (2000-10-01), Labaar
patent: 6141086 (2000-10-01), Vahala et al.
patent: 6147747 (2000-11-01), Kavaya et al.
patent: 6181412 (2001-01-01), Popescu et al.
patent: 6212951 (2001-04-01), Derevyagin
patent: 6301968 (2001-10-01), Maruyama et al.
patent: 6311121 (2001-10-01), Kuragaki et al.
patent: 6317073 (2001-11-01), Tamatsu et al.
patent: 6320651 (2001-11-01), Manhart et al.
patent: 6608669 (2003-08-01), Holton
Koelink et al. (1994) Fiber-coupled self-mixing diode-laser Doppler velocimeter: technical aspects and flow velocity profile disturbances in water and blood flows. Applied Optics. 33:5628-5641.
Koelink et al. (1992) Laser Doppler velocimeter based on the self-mixing effect in a fiber-coupled semiconductor laser: theory. Applied Optics. 31:3401-3408.
Rudd (1968) A laser Doppler velocimeter employing the laser as a mixer-oscillator. Journal of Physics E. 1:723-726.
Shimizu (1987) Directional discrimination in the self-mixing type laser Doppler velocimeter. Applied Optics. 26:4541-4544.
Shinohara et al. (1986) Laser Doppler velocimeter using the self-mixing effect of a semiconductor laser diode. Applied Optics. 25:1417-1419.
Kenneth Miller, (1972) A Covariance Approach to Spectral Moment Estimation. IEEE Transactions on Information Theory. vol. It-18, No. 5 pp. 588-596.
Pan et al. (1996) Measuravle-Range Extension of Range-Finding Speedometer Using Self-Mixing Laser Diode, IEEE Industry Applications Conference, vol. 3, Meeting 31, pp. 1640-1644.
Hara et al., (1997) New Digital Vibrometer with High Accuracy Using Self-Mixing Type LDV, IEEE Instrumentation/Measurement Technology Conference, vol. 2, Conf. 14, pp. 860-864.

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