LABORATORY EVALUATION OF THE STANDARD ELEKTRIK LORENZ (SEL) FIBRE-OPTIC RATE GYROSCOPE

Authors
  1. Vinnins, M.F.
  2. Gallop, L.D.
Corporate Authors
Defence Research Establishment Ottawa, Ottawa ONT (CAN)
Abstract
A fibre-optic rate-sensing gyroscope (FOG) manufactured by Standard Elektrick Lorenz (SEL) was loaned to DREO for evaluation. The SEL FOG, model PM1DE, was designed for a drift rate of 10 to 100 deg/hr and consists of two units; a fibre-optic sensor and a support electronics unit. Laboratory tests were carried out in the DREO Inertial Navigation Laboratory and consisted of bias drift and scale factor over plus or minus deg/sec as well as temperature sensitivity. Performance data obtained by DREO agreed closely with predicted performance although bias drift demonstrated wide deviations under thermal rate-transients. A permanent shift in bias drift and scale factor also occured after extended testing at 50C. A bias drift of 5.38 deg/hr plus or minus 0.68 deg/hr was achieved at 30C and scale factor deviation was approximately equal to 13,000 ppm over a rate range of 400 deg/sec. This instrument would be suitable for a low-performance Attitude and Heading Reference System (AHRS) application.
Report Number
DREO-1210 —
Date of publication
01 Nov 1993
Number of Pages
58
DSTKIM No
94-03448
CANDIS No
142870
Format(s):
Hardcopy;Originator's fiche received by DSIS

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