Acta Photonica Sinica, Volume. 50, Issue 12, 1201003(2021)
Characteristics of Blue-green Laser Downlink Cross-media Transmission under Different Weather Conditions
Figures & Tables(16)
Fig. 6. Laser transmission characteristics above sea surface under different weather conditions
Fig. 7. Laser angular distributions below sea surface under different weather conditions
Fig. 8. Laser angular distributions in seawater under different weather conditions 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
Fig. 10. Beam characteristics in seawater 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
Fig. 12. Beam characteristics at 20 m and 100 m depths with wind speed of 10 m/s
Table 1. Vertical distribution and optical properties of atmospheric aerosols with wavelength of 532 nm
View tableView in ArticleTable 1. Vertical distribution and optical properties of atmospheric aerosols with wavelength of 532 nm
Height Aerosol type Attenuation coefficient/m-1 Single scattering probability 0~2 km， boundary layer Maritime 1.3×10-4 1.00 2~12 km， troposphere Continental 5.0×10-6 0.86 12~50 km， stratosphere H2SO4 1.3×10-7 1.00
Table 2. Refractive indices of different components of continental aerosol
View tableView in ArticleTable 2. Refractive indices of different components of continental aerosol
Wavelength/nm Dust-like Water-soluble Soot 532 1.530-8.00×10-3i 1.530-6.00×10-3i 1.750-0.450i
Table 3. Vertical distribution and optical properties of clouds with wavelength of 532 nm
View tableView in ArticleTable 3. Vertical distribution and optical properties of clouds with wavelength of 532 nm
Type Cloud base height/m Thickness/m Attenuation coefficient/m-1 Single scattering probability Visibility/m Stratus （maritime） 1 000 300 4.18×10-2 1 70 Cirrus 6 000 800 6.62×10-3 1 4 000
Table 4. Simulation input parameters
View tableView in ArticleTable 4. Simulation input parameters
Transmitter Receiver Channel Gaussian distribution Area： 1 m2
Depth： 20 m， 60 m and 100 m
Weather conditions： Divergent angle： 300 µrad clear day （visibility 20 km）， Beam width： 20 mm cloudy day （stratus， cirrus） Wavelength： 532 nm Water type： JII （0.5 mg/m3） Height： 36 000 km Wind speed： 1 m/s， 5 m/s， 10 m/s， 15 m/s
Tools
Get Citation
Copy Citation Text
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
Paper Information
Category:
Received: May. 6, 2021
Accepted: Aug. 10, 2021
Published Online: Jan. 25, 2022
The Author Email: ZHANG Tinglu (zhangtl@ouc.edu.cn)
© Copyright 2018-2021 | Chinese Laser Press.
All Rights Reserved 沪ICP备15018463号-20