Citation
Abstract
An analysis is made of the variance of the spectral estimates calculated in the DSN by two methods, namely the correlation method and the Fast Fourier Transform (FFT) method. It is shown that the FFT method using consecutive sequences of data samples produces the same variance as the correlation method. However, a reduction of over 20% in variance can be obtained by using the FFT method with overlapped sequences of data. A relationship is derived giving the variance reduction as a function of the amount of data sequence overlap.
Details
- Volume
- VII
- Published
- February 15, 1972
- Pages
- 74–80
- File Size
- 474.9 KB