A New Family of Fiber Optic Gyroscopes With All-Digital Signal Processing

Michael S. Perlmutter, Christopher I. Reynolds and Ram Yahalom

Abstract:	Fibersense Technology Corporation has built and tested a new family of Fiber Optic Gyroscopes (FOGS) which use all digital signal processing. This new family of FOGS is built around a tactical grade gyro having 200 meters of polarization preserving fiber. These gyros have demonstrated excellent performance over the military environment and are currently in production for a variety of commercial and military programs. The unmodeled day-to-day bias stability and the bias variation over temperature is less than lo/h. The Angle Random Walk is less than O.O2”/root-hr and the Scale Factor repeatability and non-linearity is less than 100 ppm. The dynamic range of this gyro is in excess of 5OOO”ls. A single, versatile, all-digital signal processing approach is used to operate the entire family of FOGS, independent of their individual performance grade. Fibersense’s proprietary processing scheme permits the gyro to operate free of electronic induced bias drift, eliminating the necessity for any type of electronic adjustment. The signal processing electronics together with a parallel and serial (RS 232) output are realized on an electronic board of less than 9 square inches using surface mount technology components. Keywords: Navigation, gyroscopes, fiber optic gyroscopes, Inertial Navigation
Published in:	Proceedings of the 53rd Annual Meeting of The Institute of Navigation (1997) June 30 - 2, 1997 Albuquerque, NM
Pages:	131 - 141
Cite this article:	Perlmutter, Michael S., Reynolds, Christopher I., Yahalom, Ram, "A New Family of Fiber Optic Gyroscopes With All-Digital Signal Processing," Proceedings of the 53rd Annual Meeting of The Institute of Navigation (1997), Albuquerque, NM, June 1997, pp. 131-141.
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