A Prototype Fibre Optic Gyroscope for Missile Guidance Applications,
BRITISH AEROSPACE DYNAMICS GROUP STEVENAGE (ENGLAND) STEVENAGE DIV
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This paper describes the design of a prototype fibre optic gyro, which is intended for missile guidance applications. Important design constraints for the next generation of missiles are wide dynamic range, rapid switch-on, extreme ruggedness, low cost, and digital operation. These features are all embodied in the design described, which employs optical phase modulation in an integrated optical waveguide device. This also incorporates a Y-branch beam-splitter. Serrodyne phase ramps are impressed on the light propagating round the fibre optic sensor coil connected to the integrated optics chip, and rotation rate is measured by the serrodyne frequency needed to null the rotation-induced Sagnac phase shift. The gyro performance drift and random walk, and errors up to 1000 degSec., is presented.
- Air Navigation and Guidance
- Fiber Optics and Integrated Optics