FPGA -based SPGD algorithm implementation   of adaptive optical system

XU Xiangxiang; WU Yang; SU Hang; LIU Jinlong; YANG Huizhen; GONG Chenglong

doi:10.5768/JAO202142.0501008

Journal of Applied Optics > 2021 > 42(5): 810-816. > DOI: 10.5768/JAO202142.0501008

XU Xiangxiang, WU Yang, SU Hang, LIU Jinlong, YANG Huizhen, GONG Chenglong. FPGA -based SPGD algorithm implementation of adaptive optical system[J]. Journal of Applied Optics, 2021, 42(5): 810-816. DOI: 10.5768/JAO202142.0501008

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FPGA -based SPGD algorithm implementation of adaptive optical system

1.
School of Electronic Engineering, Jiangsu Ocean University, Lianyungang 222005, China
2.
Jiangsu Marine Resources Development Research Institute, Lianyungang 222005, China

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Received Date: March 23, 2021
Revised Date: June 15, 2021
Available Online: July 29, 2021

Graphical Abstract

Abstract

Abstract

The field programmable gate array (FPGA) has the advantages of repeatable programming and flexible algorithm implementation. With 97-element deformable mirror as the prototype, the general and rapid implementation scheme of the FPGA-based stochastic parallel gradient descent (SPGD) control algorithm was proposed. Firstly, the TimeGen software was adopted to analyze the time sequence of the SPGD algorithm. Secondly, the Vivado software was adopted to configure and programme the FPGA of the SPGD algorithm in the field of random disturbance voltage generation, performance indexes calculation, as well as control voltage calculation and output. Finally, the calculation results of each module and those of Matlab were compared and analyzed. The results prove the rationality and feasibility of the proposed scheme and provide the basis for the next step of hardware implementation and application of FPGA-based SPGD algorithm.
- adaptive optics system,
- SPGD control algorithm,
- FPGA,
- deformable mirror

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References (15)

References

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FPGA -based SPGD algorithm implementation of adaptive optical system