Signal-to-noise ratio in differential speckle interferometry
- 1 May 1986
- journal article
- Published by Optica Publishing Group in Journal of the Optical Society of America A
- Vol. 3 (5) , 634-644
- https://doi.org/10.1364/josaa.3.000634
Abstract
Expressions are given for the signal-to-noise ratio of the amplitude and for the uncertainty of the phase of the cross spectrum of two speckle images in the presence of photon shot noise. Applications to astronomical observations are discussed. A maximum-likelihood estimate is derived for the speckle displacement in a differential speckle-interferometric experiment, and its variance is computed. A relation is given between the size of the smallest detectable feature and the stellar magnitude, showing that this technique is quite promising.Keywords
This publication has 6 references indexed in Scilit:
- Cross spectrum analysis applied to speckle interferometryJournal of Optics, 1982
- On the origin of speckle boiling and its effects in stellar speckle interferometryJournal of Optics, 1982
- Differential Speckle InterferometryOptica Acta: International Journal of Optics, 1982
- Estimation of spatial power spectra in speckle interferometryJournal of the Optical Society of America, 1979
- Coravel— A new tool for radial velocity measurementsVistas in Astronomy, 1979
- Optical Resolution Through a Randomly Inhomogeneous Medium for Very Long and Very Short ExposuresJournal of the Optical Society of America, 1966