Speckle imaging techniques

Computer Science – Performance

Scientific paper

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Energy Spectra, Focal Plane Devices, Signal To Noise Ratios, Speckle Interferometry, Spectral Methods, Fourier Transformation, Monte Carlo Method, Transfer Functions

Scientific paper

Several proposed techniques of focal-plane imaging through turbulence are described and compared. The techniques are: shift-and-add, exponential filter, Knox-Thompson (cross-spectrum), and triple correlation. Particular attention is given to the performance of the methods at extremely low light levels of a few detected photons per frame.

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