• Acta Photonica Sinica
  • Vol. 50, Issue 12, 1201003 (2021)
Cong LI1, Ruiman YUAN2, Hong GAO2, Tinglu ZHANG2、*, Bo SUN1, Te CHEN1, and Guixing CAO1
Author Affiliations
  • 1Institute of Telecommunication and Navigation Satellites, China Academy of Space Technology, Beijing 100094, China
  • 2Department of Marine Technology, Ocean University of China, Qingdao , Shandong 266100, China
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    DOI: 10.3788/gzxb20215012.1201003 Cite this Article
    Cong LI, Ruiman YUAN, Hong GAO, Tinglu ZHANG, Bo SUN, Te CHEN, Guixing CAO. Characteristics of Blue-green Laser Downlink Cross-media Transmission under Different Weather Conditions[J]. Acta Photonica Sinica, 2021, 50(12): 1201003 Copy Citation Text show less
    Scattering phase functions of different types of aerosol
    Fig. 1. Scattering phase functions of different types of aerosol
    Scattering phase functions of two typical clouds
    Fig. 2. Scattering phase functions of two typical clouds
    Absorption coefficient of pure water
    Fig. 3. Absorption coefficient of pure water
    Volume scattering function of clean ocean water
    Fig. 4. Volume scattering function of clean ocean water
    Flow chart of Monte Carlo simulation
    Fig. 5. Flow chart of Monte Carlo simulation
    Laser transmission characteristics above sea surface under different weather conditions
    Fig. 6. Laser transmission characteristics above sea surface under different weather conditions
    Laser angular distributions below sea surface under different weather conditions
    Fig. 7. Laser angular distributions below sea surface under different weather conditions
    Laser angular distributions in seawater under different weather conditions with wind speed of 10 m/s
    Fig. 8. Laser angular distributions in seawater under different weather conditions with wind speed of 10 m/s
    Laser angular distributions at 20 m, 60 m and 100 m depths with wind speed of 10 m/s
    Fig. 9. Laser angular distributions at 20 m, 60 m and 100 m depths with wind speed of 10 m/s
    Beam characteristics in seawater under different weather conditions with wind speed of 10 m/s
    Fig. 10. Beam characteristics in seawater under different weather conditions with wind speed of 10 m/s
    Spot center energy at different depths under different weather conditions with wind speed of 10 m/s
    Fig. 11. Spot center energy at different depths under different weather conditions with wind speed of 10 m/s
    Beam characteristics at 20 m and 100 m depths with wind speed of 10 m/s
    Fig. 12. Beam characteristics at 20 m and 100 m depths with wind speed of 10 m/s
    HeightAerosol typeAttenuation coefficient/m-1Single scattering probability
    0~2 km, boundary layerMaritime1.3×10-41.00
    2~12 km, troposphereContinental5.0×10-60.86
    12~50 km, stratosphereH2SO41.3×10-71.00
    Table 1. Vertical distribution and optical properties of atmospheric aerosols with wavelength of 532 nm
    Wavelength/nmDust-likeWater-solubleSoot
    5321.530-8.00×10-3i1.530-6.00×10-3i1.750-0.450i
    Table 2. Refractive indices of different components of continental aerosol
    TypeCloud base height/mThickness/mAttenuation coefficient/m-1Single scattering probabilityVisibility/m
    Stratus (maritime)1 0003004.18×10-2170
    Cirrus6 0008006.62×10-314 000
    Table 3. Vertical distribution and optical properties of clouds with wavelength of 532 nm
    TransmitterReceiverChannel
    Gaussian distribution

    Area: 1 m2

    Depth: 20 m, 60 m and 100 m

    Weather conditions:
    Divergent angle: 300 µradclear day (visibility 20 km),
    Beam width: 20 mmcloudy day (stratus, cirrus)
    Wavelength: 532 nmWater type: JII (0.5 mg/m3
    Height: 36 000 kmWind speed: 1 m/s, 5 m/s, 10 m/s, 15 m/s
    Table 4. Simulation input parameters
    Cong LI, Ruiman YUAN, Hong GAO, Tinglu ZHANG, Bo SUN, Te CHEN, Guixing CAO. Characteristics of Blue-green Laser Downlink Cross-media Transmission under Different Weather Conditions[J]. Acta Photonica Sinica, 2021, 50(12): 1201003
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