Architecture of a multiprocessor system for Hartmann-Shack wavefront sensor

Details Architecture of a multiprocessor system for Hartmann-Shack wavefront sensor Architecture of a multiprocessor system for Hartmann-Shack wavefront sensor

Aug 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993spie.1920..211j&link_type=abstract

Proc. SPIE Vol. 1920, p. 211-218, Active and Adaptive Optical Components and Systems II, Mark A. Ealey; Ed.

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Hartmann-shack method is widely used in adaptive optics system for wavefront sensing. A data processing system is used in the sensor for computing wavefront gradient, wavefront reconstruction and control. To get a wide control bandwidth, the system speed should be high enough and the time delay should be as short as possible. In this paper, a multiprocessor system for a 37-element Hartmann-Shack Wavefront Sensor (H-S WFS) is presented. The main computation is completed by 4 processing modules in parallel, and the data acquisition, processing and communication are conducted in pipeline. The system can process video signal at 380 frames/sec and the time delay is less than 1/8 of frame period.

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