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 of autocorrelation sequence with search window for maxima. In this example, the autocorrelation sequence contains some spurious peaks. Ad1 and Ad2 peaks are indicated. The search window is shifted over the whole sequence (solid line: window in the position corresponding to Ad1 peak).
