Mathematics – Probability
Scientific paper
Jul 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990spie.1235..474s&link_type=abstract
IN: Instrumentation in astronomy VII; Proceedings of the Meeting, Tucson, AZ, Feb. 13-17, 1990 (A91-29601 11-35). Bellingham, WA
Mathematics
Probability
Imaging Techniques, Photon Density, Radiation Counters, Speckle Patterns, Temporal Distribution, Autocorrelation, Laser Applications, Measuring Instruments, Photon-Electron Interaction, Probability Density Functions, Spatial Resolution
Scientific paper
The first and second order statistics in a deadtime affected photo counting distribution are analysed. The reduced mean count rate is modeled for paralyzable and nonparalyzable deadtime in a two-dimensional imaging array. In certain limits the derived expressions are shown to agree with previously published results for single element detectors. A simulation is used to demonstrate the effect deadtime has on the speckle contrast and the speckle peak in the autocorrelation function of static laser speckle. The theoretical approach necessary to describe this behavior is also presented.
Sharma Abhay
Walker John G.
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