The correlator is a specialized device for automatically calculating the correlation functions and mutual correlation functions of stationary random processes (or processes reducible to stationary). [one]
A correlator that defines a certain set of correlation function values corresponding to a certain interval of variation of its argument (time delays) and equipped with a measuring device for counting these values is usually called a correlometer [1] .
A correlator that provides automatic registration of graphs of the correlation function ( correlograms ) on information carriers is called a correlograph .
In the hardware calculation of the correlation functions of stationary random processes, it is assumed that the processes have the ergodicity property. This allows the use of time averaging in correlators.
Notes
- ↑ 1 2 Dictionary on Cybernetics / Edited by V. S. Mikhalevich. - 2nd edition - K .: 1989. - 751 p., ISBN 5-88500-008-5
See also
- Autocorrelation function
- Cross-correlation function
- Covariance
- Coefficient of determination
- Regression analysis