激光与光电子学进展, 2020, 57 (21): 210401, 网络出版: 2020-11-11
改进自适应小波降噪在激光陀螺仪信号处理中的应用 下载: 1014次
Application of Improved Adaptive Wavelet Noise Reduction in Laser Gyroscope Signal Processing
图 & 表
图 7. 三轴激光陀螺仪采集的信号数据。 (a) X轴; (b) Y轴; (c) Z轴
Fig. 7. Signal data collected by three-axis laser gyroscope. (a) X-axis; (b) Y-axis; (c) Z-axis
图 9. 常用降噪方法的效果对比。(a)原始信号; (b) TAWF; (c)标准KF; (d) IAWF
Fig. 9. Comparison of effects of commonly used noise reduction methods. (a) Original signal; (b) TAWF; (c) standard KF; (d) IAWF
图 10. 降噪信号在不同方法下的Allan方差曲线
Fig. 10. Allan variance curves of noise reduction signal under different methods
图 14. 数熵值的计算结果。(a)细节系数能量熵;(b)近似系数能量熵;(c)细节比例能量熵
Fig. 14. Calculation results of entropy values. (a) Energy entropy of detail coefficient; (b) energy entropy of approximate coefficient; (c) energy entropy of detail ratio
图 15. 不同分解层数下的动态降噪效果
Fig. 15. Dynamic noise reduction effect under different decomposition layers
表 1原始信号噪声系数
Table1. Noise figures of original signal
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表 2信号的噪声系数
Table2. Noise figures of signal
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李想, 汪立新, 段志强. 改进自适应小波降噪在激光陀螺仪信号处理中的应用[J]. 激光与光电子学进展, 2020, 57(21): 210401. Li Xiang, Wang Lixin, Duan Zhiqiang. Application of Improved Adaptive Wavelet Noise Reduction in Laser Gyroscope Signal Processing[J]. Laser & Optoelectronics Progress, 2020, 57(21): 210401.