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Multiple parallel FPGA implementations of a Kolmogorov phase screen generator

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Abstract

Modelling the effects of wavefront distortions over a finite aperture is an essential component in the simulation of adaptive optics configurations, prediction of performance of laser designators and atmospheric imaging simulations like generation of infrared (IR) scenes in the presence of atmospheric turbulence. In all of these applications many thousands of phase screens need to be generated. The computation time required for a large iterations of algorithms that model this effect is important an issue and for this reason there have been many previous attempts to improve the computation speed such algorithms. In this paper, the computation performance of the best previous algorithm that models this phenomenon is substantially improved using high performance reconfigurable computing through acceleration of the key computationally intensive steps of the algorithm on a field programmable gate array (FPGA). Our best hardware implementation can provide a speedup of more than 60 times the original algorithm.

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Acknowledgements

The authors would like to acknowledge BAE Systems Australia for funding this research and useful discussions with Mr. Gerry Smith of BAE Systems Australia.

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Authors and Affiliations

  1. University of South Australia, Mawson lakes Campus, Mawson lakes, South Australia

    Vinay Sriram & David Kearney

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  1. Vinay Sriram
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  2. David Kearney
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Correspondence to Vinay Sriram.

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Sriram, V., Kearney, D. Multiple parallel FPGA implementations of a Kolmogorov phase screen generator. J Real-Time Image Proc 3, 195–200 (2008). https://doi.org/10.1007/s11554-007-0059-4

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