Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Example power spectra obtained from a set of phantom data. Three different uncorrelated frames of data were used to compute power spectra for a single frame. Similarly, three different sets of 10 uncorrelated frames of data were used to estimate the average power spectrum.
