Xiang Li, Lixin Wang, Qiang Sheng. Prediction of the Random Error of a Laser Gyroscope Using the Modified GM (1, 1) Model[J]. Acta Optica Sinica, 2020, 40(12): 1204001
- Acta Optica Sinica
- Vol. 40, Issue 12, 1204001 (2020)
Fig. 1. Prediction step diagram
Fig. 2. Diagram of experimental equipment
Fig. 3. Noise coefficient prediction graphs measured by traditional grey prediction algorithm. (a) X-axis measuremental noise coefficient; (b) Y-axis measuremental noise coefficient; (c) Z-axis measuremental noise coefficient
Fig. 4. Data sequence curves after wavelet filtering
Fig. 5. Noise coefficient prediction graphs measured improved coefficient. (a) X-axis measuremental noise coefficient; (b) Y-axis measuremental noise coefficient; (c) Z-axis measuremental noise coefficient
Fig. 6. Random error prediction curves of laser gyroscope. (a) Measuremental noise coefficient; (b) angle random walk coefficient; (c) coefficient of zero deviation instability
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Table 1. Variance ratios of random error prediction by traditional GM (1,1) model
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Table 2. Accuracy classification of GM (1,1) model
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Table 3. Variance ratios of random error prediction by modified GM (1,1) model
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