Sinusoidal noise injection into the dither of a ring laser gyros

Details Sinusoidal noise injection into the dither of a ring laser gyros Sinusoidal noise injection into the dither of a ring laser gyros

1994-04-25

1995-05-16

McGraw, Vincent P.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

G01C 1970

Patent

active

054165849

ABSTRACT:
Method and apparatus for reducing the effects of lock-in in a ring laser gyroscope. A sinusoidal noise signal is generated having a peak amplitude which shifts as a function of a dither drive monitor signal to new, random, peak amplitude levels. In the preferred embodiment, the peak amplitude level changes at each zero crossing of the dither drive monitor signal. Each new peak amplitude level is determined as a function of a value provided by a passband filtered random or pseudo random noise source. A step noise signal representative of that passband filtered value is multiplied by the dither drive monitor signal and the resulting sinusoidal noise signal is summed into the dither drive monitor signal. The resulting signal is then used to introduce a frequency bias, electrically or mechanically in at least one of the RLG light beams.

REFERENCES:
patent: Re34121 (1992-11-01), Benoist
patent: 3467472 (1969-09-01), Killpatrick
patent: 4445779 (1984-05-01), Johnson
patent: 4529311 (1985-07-01), Morgan et al.
patent: 4653920 (1987-03-01), Geen
patent: 4657392 (1987-04-01), Egli
patent: 4686863 (1987-08-01), Martin
patent: 4695160 (1987-01-01), Egli
patent: 4740084 (1988-04-01), Curby et al.
patent: 4981359 (1991-01-01), Tazartes et al.
patent: 4987334 (1991-01-01), Jungwirth
patent: 5088825 (1992-02-01), Derry et al.

Affiliated with

Also associated with

Rating

Sinusoidal noise injection into the dither of a ring laser gyros does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Sinusoidal noise injection into the dither of a ring laser gyros, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sinusoidal noise injection into the dither of a ring laser gyros will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-641948