Based on the existing spectral independent component analysis (spectral ICA) and non-negative constrained decomposition, a moving time window is introduced, and multiple dominant spectral components are extracted within the short-time window.

• 结合已有的频域独立成分分析方法以及带约束的非负分解处理，引入时间滑动窗口，在短时窗内动态提取多重主导功率频谱。