Abstract
Some simple measures of the frequency resolution of spectral estimates based on Blackman-Tukey, FFT and autoregressive methods are presented. Their usefulness is demonstrated by comparing the estimates with the same resolution characteristic, calculated using the same data points of noise through the adjustment of Hanning window smoothing, maximum lag time or AR model order. A discussion is also given of the degree of smoothness of the estimates in terms of a coefficient of variation for the conventional ones and a variance ratio of signal noise to residual noise for the autoregressive one.
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