On new researching methods of analysing figures of regional economy

The paper is devoted to a substantiation of a new method for researches of sequence of regional economic data as non-stationary signals. The method is based on a reception of a dimensionless measure of similarity of the local form of investigated signals with the form-standard (harmonics with certain frequency) by use of algorithms of time-frequency analysis with high resolution and a reconstruction of the surrogate signals in phase space on the basis of an embedding procedure. The examples of the method used in order to research the sequence data for the Northwest Russian regional economics have been presented.