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| The Design of Large Array Solar Adaptive Optics Electronic System for Observation of Low Contrast Extended Object |
| Fei Wei-wei① Wang Chang-qing② Liu Pu-kun① Cai Hui-zhi② Jiang Ai-min③ Tang Qing-shan② |
| ①Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China ②Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190, China ③National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China |
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Abstract Adaptive optics has wide applications in astronomical observation realm because of its high capacity in improving the spatial resolution. Compared with night astronomical adaptive technology for star observation, the observation and correction for low contrast extended target at the solar surface is always a difficulty in adaptive optics. In reference to low contrast extended character of adoptive optics in solar observation, FFT correlation coefficients algorithm is utilized and a large array adaptive optoelectronic system is designed. The system, with DSP+FPGA architecture, consists of low-order correlation tracking part and high-order wave-front processing part. The experimental result shows that the system well satisfies pre-design requirements and thus demonstrates good flexibility, versatility and scalability of the scheme.
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Received: 11 January 2010
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Corresponding Authors:
Fei Wei-wei
E-mail: williamfei@gmail.com
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2010, Vol. 32 
