摘要
短时非平稳振动信号往往淹没于较长时间的平稳或准平稳段落之中,从而忽略对其处理,使深入分析信号的全貌受到限制。针对实测振动信号中的这类信号,引进短时傅立叶变换进行局部数据处理,得到良好的时频分辨率,为全面分析振动信号特性提供了一种方法。
As signals of short time non-stationary were often processing was neglected frequently and the whole signal analyzing fourier transform was introduced to deal with local data in the paper. which offered a way to analyze the characters of vibration signal. hidden in the course of long time stationary signal, the was limited. In order to solve the problem, short time High time-frequency resolution was got by this method
出处
《计算机与数字工程》
2011年第8期154-155,195,共3页
Computer & Digital Engineering
关键词
振动信号
傅立叶变换
短时傅立叶变换
vibration signal, Fourier transform, short time Fourier transform
作者简介
张东，男，硕士，工程师，研究方向：导弹遥测数据处理。
吴晓琳，女，工程师，研究方向：导弹遥测数据处理。
