小波分解-STFT方法在地形变观测数据中的应用

摘要

By combining wavelet transform with STFT,finely decomposing the part of signal of high frequency from the part of low frequency has been realized and the time-frequency spectrum of the high frequency of the signal is given in the same time. Its results are direct and clear and the computational course is simple. This method can be used not only for analyzing continuous deformation observation data as a conventional method, but also can be used for other continuous observations.%把小波分解与短时傅里叶变换(STFT)相结合,实现了对信号高频部分和低频部分的精细分解,同时给出信号高频部分的时频谱,结果直观明确,计算过程简单.这种方法不仅可以作为连续形变观测数据的常规分析方法,也可用于其他连续观测数据的分析.