The segregation of Fourier spectrum of multi-component signal is performed using the detection of peaks and then the evaluation of boundary points. For non-stationary signals, the Fourier Bessel Series Expansion (FBSE) is the natural choice as it uses Bessel function as basis for analysis and synthesis of the signal. The FBSE spectrum has produced the number of frequency bins same as the length of the signal in the frequency range [0, ].
To isolate the Fourier spectrum in multi-component signals, we locate peaks and determine boundary points. For non-stationary signals, the Fourier Bessel Series Expansion (FBSE) is a good option as it employs Bessel functions for both analysis and synthesis. The FBSE spectrum yields an equivalent number of frequency bins to the signal's length within the range [0, ].