Fiber-optic gyro utilizing pseudorandom-bit-sequence light modul

Details Fiber-optic gyro utilizing pseudorandom-bit-sequence light modul Fiber-optic gyro utilizing pseudorandom-bit-sequence light modul

1999-02-22

2000-10-10

Turner, Samuel A.

Optics: measuring and testing

By light interference

Rotation rate

G01C 1972

Patent

active

061307556

ABSTRACT:
The invention is a method and apparatus for determining the rotation of a medium through which a light beam propagates by modulating the light beam with a pseudorandom sequence of bits. The method comprises the steps of (1) selecting a "0" or a "1" as the next bit of the modified pseudorandom bit sequence if one or more criteria are satisfied, the criteria being based on the measured properties of a plurality of prior bits of the modified pseudorandom bit sequence; otherwise: (2) selecting the next bit of an initial pseudorandom bit sequence as the next bit of the modified pseudorandom bit sequence, the next bit of the initial pseudorandom bit sequence being a function of one or more prior bits of the initial pseudorandom bit sequence.

REFERENCES:
patent: 5020912 (1991-06-01), Pavlath
patent: 5682241 (1997-10-01), Mark et al.

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