Extended Object Imaging Correction for Model-Based Wavefront Sensorless Adaptive Optics System Under Noise

Liang Ma; Qi Xu; Yang Wu; Huizhen Yang; Haibo Yang; Yuanshen Zhou

doi:10.3788/CJL201946.0405003

Chinese Journal of Lasers, Volume. 46, Issue 4, 0405003(2019)

Extended Object Imaging Correction for Model-Based Wavefront Sensorless Adaptive Optics System Under Noise

Liang Ma^1,2、*, Qi Xu¹, Yang Wu², Huizhen Yang^2、*, Haibo Yang³, and Yuanshen Zhou²

¹ School of Information and Control Engineering, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China

² Department of Electronic Engineering, Huaihai Institute of Technology, Lianyungang, Jiangsu 222005, China

³ Key Laboratory of Electro-Optical Information Control and Security Technology, The 53th Research Institute of China Electronic Technology Group Corporation, Tianjin 300308, China

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Fig. 1. Wavefront sensorless adaptive optics system

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Fig. 2. Position arrangement of DM driving units

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Fig. 3. Original clear image and imaging effect without aberration and noise. (a) Original image; (b) imaging effect

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Fig. 4. Linear relationship between MDS and MSG for extended object imaging under different signal-to-noise ratios. (a) 20 dB; (b) 15 dB; (c) 10 dB; (d) 5 dB

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Fig. 5. RMS curves by model-based control algorithms under corresponding aberrations and signal-to-noise ratios. (a) D/r0=5; (b) D/r0=15; (c) D/r0=25

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Fig. 6. RMS comparison before and after correction under different turbulence conditions and signal-to-noise ratios

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Fig. 7. Extended object imaging effect for wavefront sensorless adaptive optics system under different conditions at D/r0=5. (a)~(e) Before correction; (f)~(j) after correction

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Fig. 8. Extended object imaging effect for wavefront sensorless adaptive optics system under different conditions at D/r0=25. (a)~(e) Before correction; (f)~(j) after correction

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Table 1. Comparisons of CCD sampling times for model-based control algorithm in correcting extended object imaging under different turbulence conditions and different noise levels
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Table 1. Comparisons of CCD sampling times for model-based control algorithm in correcting extended object imaging under different turbulence conditions and different noise levels
D/r₀ CCD sampling time
No noise 20 dB 15 dB 10 dB 5 dB
5 88 88 176 176 264
15 88 176 264 264 352
25 88 176 264 352 440

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Liang Ma, Qi Xu, Yang Wu, Huizhen Yang, Haibo Yang, Yuanshen Zhou. Extended Object Imaging Correction for Model-Based Wavefront Sensorless Adaptive Optics System Under Noise[J]. Chinese Journal of Lasers, 2019, 46(4): 0405003

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