20 October 2004 Estimation of fringe parameters
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Abstract
In this report we explore replacing the widely used optimal V2 estimator with a model-fitting approach. We show that it is possible to fit the fringe power spectra with a physically reasonable model. This approach eliminates the biggest problem with the standard squared visibility estimator - determining the additive, dector-noise bias. We examine the dependence of the bias on count rate for consistency betwee on- and off-fringe measurements. The change of bias with fringe frequency provides additional information about the performance of the detectors. We have also applied a similar approach to the bias correction for the triple product, with comparable results.
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David Mozurkewich, David Mozurkewich, J. Thomas Armstrong, J. Thomas Armstrong, G. Charmaine Gilbreath, G. Charmaine Gilbreath, Thomas A. Pauls, Thomas A. Pauls, } "Estimation of fringe parameters", Proc. SPIE 5491, New Frontiers in Stellar Interferometry, (20 October 2004); doi: 10.1117/12.552416; https://doi.org/10.1117/12.552416
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