NDLI: The Litton 11 cm triaxial zero-lock gyro

Content Provider	IEEE Xplore Digital Library
Author	Martin, G.J. Gillespie, S.C. Volk, C.H.
Copyright Year	1996
Description	Author affiliation: Litton Guidance & Control Syst., Woodland Hills, CA, USA (Martin, G.J.; Gillespie, S.C.; Volk, C.H.)
Abstract	A very compact triaxial instrument is described, which takes full advantage of the inherent low random walk and high scale factor linearity of the zero-lock ring laser gyro configuration that Litton has developed over the last decade. The triax instrument is based on a rhombic dodecahedral geometry, which can accommodate three nonplanar ring light paths having orthogonal sensing axes. Component count can be considerably reduced by a discharge layout using a single cathode and two anodes to run all three axes with balanced plasma currents. In addition Litton has used its advanced mirror coating technology to develop antireflection coatings at high incidence angles, which have very low loss. This allows us to use a 'reversed' mirror substrate as a Faraday rotator with external magnets, so greatly simplifying the fabrication of a triax device. The resulting instrument is very well suited for the next generation of pointing and tracking applications with a combination of size, random walk, scale factor, resolution and bandwidth requirements beyond the capabilities of any other current technologies.
Starting Page	49
Ending Page	55
File Size	713132
Page Count	7
File Format	PDF
ISBN	0780330854
DOI	10.1109/PLANS.1996.509056
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1996-04-22
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Instruments Mirrors Coatings Linearity Ring lasers Geometrical optics Cathodes Anodes Plasma devices Magnets
Content Type	Text
Resource Type	Article

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