Author Affiliations
School of Electronics and Information, Xi''an Polytechnic University, Xi''an, Shaanxi 710048, Chinashow less
Fig. 1. NLOS UV single-scatter propagation model in non-coplanar geometry
Fig. 2. Determine the upper and lower limits of r. (a) Situation 1; (b) situation 2
Fig. 3. Determine the upper and lower limits of θ and α. (a) Situation 1; (b) situation 2
Fig. 4. Schematic diagram of the center point of micro element V″ in the non-line-of-sight non-coplanar ultraviolet single-scatter transmission model
Fig. 5. Schematic diagram of research
Fig. 6. Influence of node's position change on path loss
Fig. 7. Comparison of simulation results between TTUM and MC method
Fig. 8. Influence of elevation angle change of transmitter on path loss. (a) 0° path; (b) 45° path; (c) 90° path; (d) 135° path; (e) 180° path
Fig. 9. Influence of elevation angle change of receiver on path loss. (a) 0° path; (b) 45° path; (c) 90° path; (d) 135° path; (e) 180° path
Fig. 10. Influence of elevation angle consistent change of transceiver on path loss. (a) 0° path; (b) 45° path; (c) 90° path; (d) 135° path; (e) 180° path
Fig. 11. Influence of beam divergence angle change on path loss. (a) 0° path; (b) 45° path; (c) 90° path; (d) 135° path; (e) 180° path
Fig. 12. Influence of FOV angle change on path loss. (a) 0° path; (b) 45° path; (c) 90° path; (d) 135° path; (e) 180° path
Parameter | Value |
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Wavelength λ /nm | 266 | Rayleigh scattering coefficient /(10-3 m-1) | 0.24 | Mie scattering coefficient /(10-3 m-1) | 0.25 | Absorption coefficient ka /(10-3 m-1) | 0.74 | Rayleigh phase function scattering parameter γ | 0.017 | Mie phase function asymmetry parameter g | 0.72 | Mie phase function parameter f | 0.5 | Speed of light c /(108 m·s-1) | 3 | Receiving aperture radius r /(10-2 m) | 1.5 | Division times M | 10 |
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Table 1. Part of simulation parameters
Moving distance R /m | Communication distance /m | V /m3 |
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0 | 100 | 24858.05 | 10 | 90 | 18121.51 | 20 | 80 | 12727.31 | 30 | 70 | 8526.29 | 40 | 60 | 5369.31 | 50 | 50 | 3107.23 | 60 | 40 | 1590.89 | 70 | 30 | 671.14 | 80 | 20 | 198.83 | 90 | 10 | 24.83 |
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Table 2. Value of V when the receiver moves in 180° direction
Moving distance R /m | Simulation time /s | Time difference /s | PL /dB | PL difference /dB |
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| TTUM | MC | TTUM | MC |
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0 | 8.7138 | 49.6100 | 40.8962 | 89.3430 | 89.5740 | 0.2310 | 10 | 8.6954 | 49.5782 | 40.8828 | 89.8757 | 90.1228 | 0.2471 | 20 | 8.7205 | 49.5948 | 40.8743 | 90.7685 | 91.0046 | 0.2361 | 30 | 8.6407 | 49.8603 | 41.2196 | 91.7916 | 91.9781 | 0.1865 | 40 | 8.5837 | 49.5648 | 40.9811 | 92.8565 | 92.9945 | 0.1380 | 50 | 8.6085 | 49.3622 | 40.7537 | 93.8808 | 93.9924 | 0.1116 | 60 | 8.5550 | 49.6127 | 41.0577 | 94.9377 | 94.9909 | 0.0532 | 70 | 8.5222 | 49.3575 | 40.8353 | 95.9082 | 95.9698 | 0.0616 | 80 | 8.4867 | 49.2829 | 40.7962 | 96.8087 | 96.8688 | 0.0601 | 90 | 8.4919 | 49.4206 | 40.9287 | 97.6365 | 97.7406 | 0.1041 | 100 | 8.4516 | 49.1736 | 40.7220 | 98.4788 | 98.5698 | 0.0910 |
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Table 3. Contrast data between TTUM and MC