Concept information
Terme préférentiel
autocorrelation
Définition(s)
- Autocorrelation, sometimes known as serial correlation in the discrete time case, is the correlation of a signal with a delayed copy of itself as a function of delay. Informally, it is the similarity between observations of a random variable as a function of the time lag between them. The analysis of autocorrelation is a mathematical tool for finding repeating patterns, such as the presence of a periodic signal obscured by noise, or identifying the missing fundamental frequency in a signal implied by its harmonic frequencies. It is often used in signal processing for analyzing functions or series of values, such as time domain signals. (Wikipedia, The Free Encyclopedia, https://en.wikipedia.org/wiki/Autocorrelation)
Concept(s) générique(s)
Synonyme(s)
- autocorrelation function
Traductions
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français
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fonction d'autocorrélation
URI
http://data.loterre.fr/ark:/67375/MDL-BQWGR08Q-X
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