Noise bias correction of power spectra from image amplitude detectors

Details Noise bias correction of power spectra from image amplitude detectors Noise bias correction of power spectra from image amplitude detectors

Aug 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990spie.1237..557s&link_type=abstract

Proc. SPIE Vol. 1237, p. 557-565, Amplitude and Intensity Spatial Interferometry, James B. Breckinridge; Ed.

Physics

Scientific paper

Speckle interferometric imaging techniques using image power spectra to obtain calibrated image amplitudes are contaminated by noise biases inherent to the detectors themselves. This noise bias contribution is non-linear for detectors in a conventional image amplitude detection mode (used for bright objects--over 10^5 photons/sec--such as SN1987A, for example). This paper presents our successes in modelling this non-linear bias contribution with iterative minimization techniques.

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