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Differential methods of identifying gyro noise structure

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Abstract

The paper considers the differences in accuracy criteria for gyros in two applications: measuring rotation about a fixed axis and measuring rotation about a point. We describe the class of gyro noise with zero spectral density at zero frequency. This noise does not cause errors in angles of rotation (i.e., integrals of angular velocity projections on the gyro sensitivity axis) to accumulate with time, but lead to accumulation of errors in attitude determined by strapdown inertial systems. Ways of identifying gyro noise structure using the known lower order variances are analyzed: two-sample variance (Allan variance), three-sample variance (Hadamar variance), and proposed higher order variances [1].

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Published in Russian in Giroskopiya i Navigatsiya, 2011, No. 1, pp. 59–78.

The article was translated by the author.

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Krobka, N.I. Differential methods of identifying gyro noise structure. Gyroscopy Navig. 2, 126–137 (2011). https://doi.org/10.1134/S2075108711030084

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