MATLAB Implementation of Spectral Analysis with ZOOM-FFT Technique

In spectral analysis, the data length N and sampling frequency fs determine the frequency resolution df=fs/N. To enhance resolution, ZOOM-FFT is commonly employed. This article provides MATLAB code demonstrating how ZOOM-FFT refines spectral resolution through interpolation and resampling.

Power Spectrum Estimation of Random Signals Using Autocorrelation Function and Periodogram Methods

Implementation of power spectrum estimation for random signals through autocorrelation function and periodogram methods, with analysis of how data length, autocorrelation sequence length, signal-to-noise ratio, window functions, and averaging次数 affect spectral resolution, stability, main lobe width, and side lobe effects. Includes code implementation considerations for parameter optimization.