Noise bias correction of power spectra from image amplitude detectors

Nicolas V. Strobel; E. Keith Hege; Guenther Eichhorn

doi:10.1117/12.19326

1 August 1990 Noise bias correction of power spectra from image amplitude detectors

Nicolas V. Strobel, E. Keith Hege, Guenther Eichhorn

Proceedings Volume 1237, Amplitude and Intensity Spatial Interferometry; (1990) https://doi.org/10.1117/12.19326
Event: SPIE Astronomical Telescopes and Instrumentation for the 21st Century, 1990, Tucson, AZ, United States

Abstract

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.

Citation Download Citation

Nicolas V. Strobel, E. Keith Hege, and Guenther Eichhorn "Noise bias correction of power spectra from image amplitude detectors", Proc. SPIE 1237, Amplitude and Intensity Spatial Interferometry, (1 August 1990); https://doi.org/10.1117/12.19326

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