Author Affiliations
1Faculty of Automation and Information Engineering, Xi'an University of Technology, Xi'an 710048, China2Shaanxi Civil-Military Integration Key Laboratory of Intelligence Collaborative Networks, Xi'an 710000, Chinashow less
Fig. 1. Schematic diagram of non-spherical particle
Fig. 2. The model of haze detection by UV backscattering
Fig. 3. Scattering phase function for ellipsoidal
Fig. 4. Scattering phase function for cylindrical
Fig. 5. Scattering phase function for Chebyshev haze with different parameters
Fig. 6. Backscattering echo of ellipsoidal haze with different concentration of UV pulse
Fig. 7. Peak power of pulse echo for ellipsoidal haze
Fig. 8. Full width at half maximum of pulse echo for ellipsoidal haze
Fig. 9. Peak power of pulse echo for ellipsoidal haze with different half axis ratio
Fig. 10. Full width at half maximum of pulse echo for ellipsoidal haze with different half axis ratio
Fig. 11. Backscattering echo of cylindrical haze with different concentration of UV pulse
Fig. 12. Peak power of pulse echo for cylindrical haze
Fig. 13. Full width at half maximum of pulse echo for cylindrical haze
Fig. 14. Peak power of pulse echo for cylindrical haze with different diameter to length ratio
Fig. 15. Full width at half maximum of pulse echo for cylindrical haze with different diameter to length ratio
Fig. 16. Backscattering echo of Chebyshev haze with different concentration of UV pulse
Fig. 17. Peak power of pulse echo for Chebyshev haze
Fig. 18. Full width at half maximum of pulse echo for Chebyshev haze
Fig. 19. Peak power of pulse echo for Chebyshev haze with different deformation parameters
Fig. 20. Full width at half maximum of pulse echo for Chebyshev haze with different deformation parameters
Fig. 21. Peak power of pulse echo for Chebyshev haze with different ripple parameters
Fig. 22. Full width at half maximum of pulse echo for Chebyshev haze with different ripple parameters
Type | Radius/μm | Concentration/cm3 | Aitken | 10-3~10-2 | 10-4~102 | Haze | 10-2~1 | 10~103 | Droplet | 1~10 | 10~100 |
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Table 1. Radius and density of haze
[16] Type | Size distribution | WASO | (σ=0.81,rc=0.03 μm) | BC | (σ=0.69,rc=0.011 μm) | DUST | (σ=0.92,rc=0.47 μm) |
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Table 2. Scale spectrum distribution of haze
Haze | Cext/μm2 | Csca/μm2 | Cabs/μm2 | Albedo | Asymmetry factor | a/b=1/2 | 2.144 2 | 2.008 4 | 0.135 8 | 0.936 6 | 0.779 1 | a/b=1/3 | 2.124 7 | 1.994 3 | 0.130 4 | 0.938 5 | 0.798 1 | a/b=2/1 | 2.136 2 | 2.001 7 | 0.134 5 | 0.937 | 0.747 3 | a/b=2/3 | 2.194 3 | 2.052 6 | 0.141 7 | 0.935 5 | 0.779 6 | a/b=3/1 | 2.065 2 | 1.944 3 | 0.120 9 | 0.941 4 | 0.841 2 | a/b=3/2 | 2.189 4 | 2.046 3 | 0.143 1 | 0.934 6 | 0.815 7 | D/L=1/2 | 2.048 1 | 1.925 1 | 0.123 | 0.939 7 | 0.792 4 | D/L=1/3 | 2.024 2 | 1.897 6 | 0.126 6 | 0.937 2 | 0.821 6 | D/L=2/1 | 2.034 3 | 1.922 2 | 0.112 1 | 0.944 8 | 0.784 1 | D/L=2/3 | 2.098 3 | 1.971 | 0.127 3 | 0.939 3 | 0.777 1 | D/L=3/1 | 2.021 1 | 1.898 3 | 0.122 8 | 0.939 1 | 0.833 6 | D/L=3/2 | 2.071 7 | 1.944 2 | 0.127 5 | 0.938 6 | 0.774 2 | Chebyshev haze | 2.211 3 | 2.068 2 | 0.143 1 | 0.935 3 | 0.773 7 | Spherical haze | 2.225 6 | 2.081 5 | 0.144 1 | 0.935 2 | 0.831 3 |
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Table 3. Relevant scattering parameters of haze particles list
Parameter | Value | Laser wavelength/nm | 266 | Laser divergence angle/mrad | 5 | Emission optical lens diameter /mm | 12 | Receiving optical lens diameter/mm | 25 | Emission photon number | 106 | Haze concentration/(μg·m-3) | 100,200,300,400,500 |
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Table 4. Partial simulation parameter