Volume 6 Issue 3
Jun.  2013
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WEI Pei-feng, LIU Xin-yue, LIN Xu-dong, ZHANG Zhen-duo, DONG Lei. Temporal simulation of atmospheric turbulence during adaptive optics system testing[J]. Chinese Optics, 2013, 6(3): 371-377. doi: 10.3788/CO.20130603.0371
Citation: WEI Pei-feng, LIU Xin-yue, LIN Xu-dong, ZHANG Zhen-duo, DONG Lei. Temporal simulation of atmospheric turbulence during adaptive optics system testing[J]. Chinese Optics, 2013, 6(3): 371-377. doi: 10.3788/CO.20130603.0371

Temporal simulation of atmospheric turbulence during adaptive optics system testing

doi: 10.3788/CO.20130603.0371
  • Received Date: 11 Feb 2013
  • Rev Recd Date: 13 Apr 2013
  • Publish Date: 10 Jun 2013
  • A temporal model was proposed for simulating the atmospheric turbulence varying with the time in the adaptive optics system testing. The relationship between the number of interpolated frames for the random phase screen, refurbish frequency and the mean wind speed was analyzed. The analysis result demonstrates that it is necessary to smooth the random phase screen for characterizing the temporal gradual variation of the random wavefront in order to make the change of the random wavefront better aligned with the influence of atmospheric turbulence on continuous smoothing gradients of incident wavefront. The interpolated frames of the random phase screen is only related to the aperture diameter and the atmospheric coherence length, but not related to the wind speed, and the refurbish frequency of the random phase screen increases with the mean wind speed, and the refurbish frequency smoothed increases with the number of interpolated frames. A atmospheric turbulence simulator was constructed in laboratory and the analysis of the power spectrum density of experimental result demonstrates that temporal model of the atmospheric turbulence simulation is valid.

     

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