Wavelet and Fast Fourier Transform based analysis of Solar Image
This work addresses solar image analysis for researchers in astronomy or signal processing, but it is incremental as it applies standard methods to a specific dataset.
The authors applied Fast Fourier Transform and Wavelet Transform to analyze a solar image from December 2004, aiming to identify periodicity and coherence in different sections and plot energy distribution using scalograms and 3D-coefficient plots.
Both of Wavelet and Fast Fourier Transform are strong signal processing tools in the field of Data Analysis. In this paper fast fourier transform (FFT) and Wavelet Transform are employed to observe some important features of Solar image (December, 2004). We have tried to find out the periodicity and coherence of different sections of the solar image. We plotted the distribution of energy in solar surface by analyzing the solar image with scalograms and 3D-coefficient plots.