Ring laser gyroscopes

Details Ring laser gyroscopes Ring laser gyroscopes

1984-10-10

1987-03-31

Willis, Davis L.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

G01C 1964

Patent

active

046539204

ABSTRACT:
A ring laser gyroscope may be oscillated or dithered about its sensing axis to the known `lock-in` effect. The diether motion can comprise an alternating component plus a random component generated by a random noise generator, e.g. a noise diode. The use of a true random noise generator may not always be practicable. Herein, there is proposed the dithering of a ring laser gyroscope with a motion including a component having a specifically Gaussian probability density. Such a component can be formed using a so-called pseudo-random sequence generator based on a shift-register.

REFERENCES:
patent: 3456208 (1969-07-01), Ratz
patent: 3467472 (1969-09-01), Killpatrick
patent: 3521185 (1970-07-01), Ley
patent: 3612690 (1971-10-01), Staats
patent: 3742381 (1973-06-01), Hurd
patent: 4277173 (1981-07-01), Ljung et al.

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