Laser doppler velocimeter

Details Laser doppler velocimeter Laser doppler velocimeter

1991-12-06

1993-12-21

Hellner, Mark

Optics: measuring and testing

Velocity or velocity/height measuring

With light detector

356 28, G01S 308

Patent

active

052725138

ABSTRACT:
A laser Doppler velocimeter is formed using erbium-doped fiber as the lasing medium. Within the velocimeter, all optical signals, transmitted and received, are handled by optical fibers. A telescope with a single optical fiber input/output interface acts as both the transmission device to focus the radiation at a specified point, and as the receiving system for collecting reflected radiation. The portion of the reflected radiation collected by the receiving system is analyzed to determine the Doppler shift caused by targets at the focal point of the telescope.

REFERENCES:
patent: 3915572 (1975-10-01), Orloff
patent: 3963347 (1976-06-01), Segre et al.
patent: 4355893 (1982-10-01), Chicklis
patent: 4447149 (1984-05-01), Marcus et al.
patent: 4995720 (1991-02-01), Amzajerdian
patent: 5013928 (1991-05-01), Ikeda et al.

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