针对陀螺稳定平台系统中光纤陀螺信号噪声的非平稳性特点，分析并讨论了光纤陀螺输出信号模型及常用陀螺信号滤波方法的优缺点。
Aiming at the non-stationary character of signal noise of fiber optic gyro (FOG) in the stabilized platform, the signal model of FOG and some methods of noise reduction are analyzed and discussed.
针对数控机床机械系统的非线性和振动信号的非平稳特性，引入局域波分析方法。
Then, Local Wave method is introduced in consideration of the non-stationarity characteristic of the vibrating signals from NC machines.
系统可以分析平稳信号和非平稳信号，实现了实时地在时间域、频率域内了解机组运行状态的功能。
Both stationary and non-stationary signals are suitable to be analyzed by the system. The running state of generator set can be real-time observed in both time domain and domain.
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