autocorrelation

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autocorrelation

A measure of how closely a signal in a time series resembles a time-delayed image of itself—periodic signals are highly autocorrelated; random signals are not.
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References in periodicals archive ?
This view is supported by a strong temporal auto-correlation in particular feed types; such a phenomenon has also been described in other areas of feeding (Marzec 2012, Urbanska et al.
test provides a new statistical test, complementary to the standard NIST tests, and in particular to the auto-correlation test.
The spatial relevance testing has proved that 11 prefecture-cities in Jianxi Province have significant auto-correlation in the new urbanization inclusive's development, and there is a significant aggregating phenomenon in terms of the spatial distribution.
According to authors, the cross auto-correlation puzzle documented by Lo and Mackinlay (1990) is associated with a slow response by some small stocks to good, but not bad, common news.
The periodic auto-correlation function [C.sub.aa.sup.P][k] of any DB sequence a of span n, for a given shift k, exhibits the following properties:
The experimental findings, using fiber ring oscillator, the peak side lobe level can reduce the auto-correlation curve generated chaotic signal semiconductor lasers with optical feedback, the signal-to-noise ratio so as to improve the optical time domain measurement system with chaotic laser correlation method [19].
The chart of auto-correlation function (Figure 5) shows the correlation structure relatively well incorporated by the model, especially until 15th lag.
(3) Complementary codes These are a kind of digital bit sequence commonly employed in wireless LAN communication, and this shows good auto-correlation characteristics.