摘要
在建立陀螺漂移的数学模型的基础上,使用不同的小波基对陀螺输出信号进行多尺度小波分解,去除由噪声产生的小波系数,从而达到消除噪声的目的。从不同小波基的滤波效果来看,双正交样条小波Bior1.5具有较好的去噪效果,从而也验证了小波对称性在陀螺信号去噪中的重要性。
A new math model was built. Gyro signals were decomposed into different scales by four kinds wavelets to discard wavelet coefficient that created by noise and complete noise eliminating. Different results were compared through simulated experiment and bior1.5 wavelet show better performance. The importance of wavelet symmetry is proved in gyro signal processing.
出处
《中国惯性技术学报》
EI
CSCD
2002年第5期28-30,共3页
Journal of Chinese Inertial Technology
基金
本文受天津市自然科学基金资助(023601611)
