Wavefront Sensing Via High Speed DSP

J Scott Smith,Bruce Dean

Wavefront Sensing Via High Speed DSP
Format
Paperback
Publisher
Bibliogov
Country
United States
Published
6 August 2013
Pages
30
ISBN
9781289286484

Wavefront Sensing Via High Speed DSP

J Scott Smith,Bruce Dean

Future light-weighted and segmented primary mirror systems require active optical control to maintain mirror positioning and figure to within nanometer tolerances. Current image-based wavefront sensing approaches rely on post-processing techniques to return an estimate of the aberrated optical wavefront with accuracies to the nanometer level. But the lag times between wavefront sensing, and then control, contributes to a significant latency in the wavefront sensing implementation. In this analysis we demonstrate accelerated image-based wavefront sensing performance using multiple digital signal processors (DSP’s). The computational architecture is discussed as well as the heritage leading to the approach.

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