TRIPLE AND AUTOCORRELATION FUNCTIONS FROM FACTORIAL MOMENTS MEASURED

This research establishes a clear relation between the autocorrelation (AC) and triple-correlation (TC) functions of a signal and its second - and third-order factorial moments (FM's). Theoretical expressions of the variances corresponding to the AC and TC obtained from the measur ement of FM's is developed for low-light-level conditions. Experimenta l values corresponding to direct AC measurernents were also compared w ith those obtained from the FM measurement. The conclusion is that the measurement of FM's may be an alternative to AC and TC measurements.