• Acta Photonica Sinica
  • Vol. 53, Issue 8, 0801001 (2024)
Shangwei LI1,2, Yichong REN3,**, Xinmiao LI2,4, Haiping MEI2..., Zhiwei TAO2, Shiwei LIU1,2 and Ruizhong RAO1,2,*|Show fewer author(s)
Author Affiliations
  • 1School of Environmental Science and Optoelectronic Technology, University of Science and Technology of China, Hefei 230026, China
  • 2Key Laboratory of Atmospheric Optics, Anhui Institute of Optics and Fine Mechanics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China
  • 3School of Physics, Hefei University of Technology, Hefei 230009, China
  • 4Science Island Branch, Graduate School of USTC, Hefei 230026, China
  • show less
    DOI: 10.3788/gzxb20245308.0801001 Cite this Article
    Shangwei LI, Yichong REN, Xinmiao LI, Haiping MEI, Zhiwei TAO, Shiwei LIU, Ruizhong RAO. Blur and Distortion in Turbulence-degraded Image[J]. Acta Photonica Sinica, 2024, 53(8): 0801001 Copy Citation Text show less
    Turbulence image degradation model
    Fig. 1. Turbulence image degradation model
    Image degradation simulation results in uniform turbulence
    Fig. 2. Image degradation simulation results in uniform turbulence
    The simulated and the theoretical MTFA changes with r0 in uniform turbulence
    Fig. 3. The simulated and the theoretical MTFA changes with r0 in uniform turbulence
    Variation of simulated and theoretical values of isoplanatic angle with r0 in uniform turbulence
    Fig. 4. Variation of simulated and theoretical values of isoplanatic angle with r0 in uniform turbulence
    Average correlation coefficient changes with point source separation angle
    Fig. 5. Average correlation coefficient changes with point source separation angle
    Changes of the approximate invariant region of the image square with r0
    Fig. 6. Changes of the approximate invariant region of the image square with r0
    Schematic of turbulence extreme distribution
    Fig. 7. Schematic of turbulence extreme distribution
    Simulation results under two turbulence distributions
    Fig. 8. Simulation results under two turbulence distributions
    Variation of mean MTFA and approximate invariant region of image square with r0 for two turbulence scenarios
    Fig. 9. Variation of mean MTFA and approximate invariant region of image square with r0 for two turbulence scenarios
    ComponentParametersValue
    Atmospheric turbulence parameters

    Atmospheric coherence length/cm

    Phase screen spacing/m

    L0/m

    1~5

    250

    30

    Imaging parameter

    Wavelength/nm

    Propagation distance/m

    Pupil diameter/m

    Pupil segmentation/pixels

    Focal length/m

    Target size/m

    Target pixel/pixels

    700

    5 000

    0.5

    256×256

    6

    2.56

    1 024×1 024

    Table 1. The main parameters of image degradation in uniform turbulence
    Shangwei LI, Yichong REN, Xinmiao LI, Haiping MEI, Zhiwei TAO, Shiwei LIU, Ruizhong RAO. Blur and Distortion in Turbulence-degraded Image[J]. Acta Photonica Sinica, 2024, 53(8): 0801001
    Download Citation