摘要
基于传统信号处理方法对非平稳信号的局限性 ,利用小波方法具有精确分频的特点 ,进行了固体火箭发动机点火冲击段这一典型的非平稳信号的动态特性信息的提取 ,仿真及针对实际信号的处理均表明本方法具有很好的去除噪声能力。
In consideration of the limitation traditional method for unstable signal precessing,the feature of dividing frequency accurately of wavelet transformation was made use of to extract the dynamic characteristic information of vibration signal in ignition shock section of SRM.Simulation and actual signal processing show that the method has the ability to eliminate noise.
出处
《固体火箭技术》
EI
CAS
CSCD
北大核心
2001年第4期72-74,共3页
Journal of Solid Rocket Technology
关键词
小波变换
固体推进剂火箭发动机
点火试验
动态数据处理
振动信号
wavelet transformation
solid propellant rocket engine
ignition test
dynamic signal processing
vibration signal
