Structural-Modal Analysis of Biomedical Signals

This paper describes the method for analyzing time series, which allows one to determine both sudden changes in the structure of a complex system and its long-term adaptation trends. The method is suitable for locally stationary and non-stationary signals processing. The method allows one to obtain an adaptation characteristic of the system to external influences and internal processes occurring in it on different time scales. The method is based on a signal decomposition using harmonic transformations and subsequent clustering of the resulting decomposition components.