Laser gun ammunition measurement equipment

Details Laser gun ammunition measurement equipment Laser gun ammunition measurement equipment

1991-03-12

1992-10-27

Hellner, Mark

Optics: measuring and testing

Velocity or velocity/height measuring

With light detector

356 28, 342 67, 342104, G01C 308

Patent

active

051593963

ABSTRACT:
An apparatus is described for measuring the velocity of an object by measuring the Doppler frequency shift of a reflected laser beam. A laser beam is projected onto a target area which is moving with respect to the inertial frame of the laser transmitter and the laser receiver. The reflected laser energy is mixed with a local oscillator beam and the mixed beam is focused onto a radiation detector. The Doppler frequency shift is measured, thus indicating the object's velocity. A sacrificial mirror is employed so that internal projectile velocity measurements may be made on the projectile. The laser beam permits measurement both external and internal to the barrel for large and small caliber weapons. Additionally, integration and differentiation means may be provided so that instantaneous position and acceleration data can also be generated for the projectile.

REFERENCES:
patent: 2691761 (1954-10-01), Smith, Jr.
patent: 2735981 (1956-02-01), Schutz et al.
patent: 3409369 (1968-11-01), Bickel
patent: 3790278 (1974-02-01), Buczek et al.
patent: 3918061 (1975-11-01), Elgaard
patent: 4167329 (1979-09-01), Jelalian et al.
patent: 4283989 (1981-08-01), Toulios et al.
patent: 4457206 (1984-07-01), Toulios et al.
patent: 4486710 (1984-12-01), Schmidt
patent: 4622554 (1986-11-01), Gellekink et al.

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