水下无线激光传输脉冲响应建模 下载: 888次
Impulse Response Modeling for Underwater Wireless Laser Transmission
1 桂林电子科技大学信息与通信学院, 广西 桂林 541004
2 广西精密导航技术与应用重点实验室, 广西 桂林 541004
图 & 表
图 1. 不同散射相位函数与Petzold平均粒子相位函数对比。(a) 半对数坐标;(b) 双对数坐标
Fig. 1. Comparison of different scattering phase functions with Petzold average particle phase function. (a) Semi-logarithmic coordinates; (b) double logarithmic coordinates
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图 2. 蒙特卡罗模拟仿真流程图
Fig. 2. Flow chart of Monte Carlo simulation
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图 3. 不同海域中的信道脉冲响应建模。(a) 海港中不同链路距离;(b) 沿海中不同接收孔径;(c) 沿海中不同链路距离;(d) 海港中不同AFOV
Fig. 3. Modeling of channel impulse response in different sea areas. (a) Different link distances in harbor; (b) different receiving apertures in coast; (c) different link distances in coast; (d) different AFOVs in harbor
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图 4. 不同海域中不同初始脉宽下的信道脉冲响应建模。(a) 沿海海域;(b) 海港海域
Fig. 4. Modeling of channel impulse response at different initial pulse widths in different sea areas. (a) Coastal water; (b) harbor water
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表 1各散射函数和Petzold粒子相位函数之间的Δβ值对比
Table1. Comparison of Δβ between each scattering function and Petzold particle phase function
Phase function | Δβ |
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(0.1000°,5.000°) | (0.1000°,90.00°) | (90.00°,180.0°) | (0.1000°,180.0°) |
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HG | 18.55 | 26.62 | 39.88 | 36.16 | FFT | 0.56 | 10.36 | 17.82 | 29.22 |
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表 2不同水域类型中的衰减参数、散射反照率和不对称因子
Table2. Attenuation parameters, scattering albedo, and asymmetry factor in different water types
Water type | /m-1 | /m-1 | /m-1 | ω0 | g |
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Ⅱ Coastal | 0.179 | 0.219 | 0.40 | 0.55 | 0.94 | Ⅲ Turbid Harbor | 0.366 | 1.824 | 2.19 | 0.83 | 0.92 |
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表 3不同UWOC信道中WDGF的参数
Table3. Parameters of WDGF in different UWOC channels
Water type | AFOV /(°) | d /inch | L /m | C1 | C2 | C3 | C4 | α | β |
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Harbor | 90 | 12 | 12 | 1.1560 | 0.3466 | 9.840×10-10 | 0.5751 | 0.7882 | 0.8901 | Harbor | 90 | 12 | 16 | 0.5510 | 0.1686 | 2.131×10-3 | 0.8361 | 0.8986 | 0.7957 | Coastal | 90 | 12 | 30 | 0.1669 | 1.9360 | 2.569 | 0.9751 | 0.6361 | 0.8901 | Coastal | 90 | 12 | 50 | 0.5031 | 0.2139 | 0.5812 | 0.8361 | 0.7368 | 1.9430 | Harbor | 30 | 12 | 10 | 0.4160 | 0.8866 | 2.100×10-4 | 0.3831 | 0.6812 | 0.9001 | Harbor | 60 | 12 | 10 | 1.3610 | 0.6986 | 3.131×10-3 | 0.7361 | 0.6986 | 0.8957 | Harbor | 90 | 12 | 10 | 1.6760 | 0.5516 | 9.110×10-10 | 0.6751 | 0.7382 | 0.9101 | Coastal | 90 | 8 | 45 | 0.2032 | 0.3872 | 3.610×10-3 | 0.4156 | 0.7145 | 2.7960 | Coastal | 90 | 12 | 45 | 0.3672 | 0.2686 | 3.131×10-3 | 0.8361 | 0.8126 | 2.8950 | Coastal | 90 | 16 | 45 | 0.8320 | 0.2816 | 1.260×10-3 | 1.6751 | 0.9382 | 1.9900 |
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表 4不同UWOC信道中MGF的参数
Table4. Parameters of MGF in different UWOC channels
Water type | AFOV /(°) | d /inch | L /m | C1 | C2 | C3 | C4 | χ |
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Harbor | 90 | 12 | 12 | 1.0870 | 0.0227 | 0.02326 | 0.05623 | 2.51100 | Harbor | 90 | 12 | 16 | 0.4936 | 5.5870 | 0.05923 | 0.03623 | 0.04124 | Coastal | 90 | 12 | 30 | 1.5870 | 0.8027 | 0.00326 | 0.15620 | 0.91100 | Coastal | 90 | 12 | 50 | 0.3836 | 2.2090 | 0.05923 | 1.53600 | 3.91200 | Harbor | 30 | 12 | 10 | 0.1972 | 0.5828 | 0.03263 | 0.65160 | 1.35800 | Harbor | 60 | 12 | 10 | 0.6036 | 0.6095 | 1.56000 | 1.03700 | 0.25160 | Harbor | 90 | 12 | 10 | 0.9936 | 0.8152 | 0.42890 | 0.05676 | 2.03900 | Coastal | 90 | 8 | 45 | 0.0759 | 0.7832 | 0.02682 | 2.82900 | 2.86500 | Coastal | 90 | 12 | 45 | 0.1352 | 0.7011 | 1.67200 | 3.91600 | 2.91500 | Coastal | 90 | 16 | 45 | 0.6279 | 1.1660 | 0.21260 | 0.07363 | 3.81600 |
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表 5不同UWOC信道中MGF和WDGF的RMSE值比较
Table5. Comparison of RMSE values of MGF and WDGF in different UWOC channels
Water type | AFOV /(°) | d /inch | L /m | RMSE of WDGF /% | RMSE of MGF /% |
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Harbor | 90 | 12 | 12 | 0.64 | 0.25 | Harbor | 90 | 12 | 16 | 1.22 | 0.60 | Coastal | 90 | 12 | 30 | 0.98 | 0.11 | Coastal | 90 | 12 | 50 | 1.99 | 1.07 | Harbor | 30 | 12 | 10 | 0.42 | 0.16 | Harbor | 60 | 12 | 10 | 1.19 | 0.33 | Harbor | 90 | 12 | 10 | 1.98 | 0.59 | Coastal | 90 | 8 | 45 | 1.17 | 1.01 | Coastal | 90 | 12 | 45 | 1.69 | 1.50 | Coastal | 90 | 16 | 45 | 2.19 | 1.77 |
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表 6不同初始脉宽在UWOC信道中MGF参数及RMSE值
Table6. MGF parameters and RMSE values in UWOC channels with different initial pulse widths
Water type | AFOV /(°) | d /inch | L /m | ξ /ps | C1 | C2 | C3 | C4 | χ | RMSE /% |
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Harbor | 90 | 12 | 10 | 10 | 0.1836 | 3.2110 | 0.05923 | 2.963 | 2.9120 | 0.3900 | Harbor | 90 | 12 | 10 | 5000 | 0.9136 | 0.6096 | 0.06312 | 1.136 | 1.4130 | 1.2000 | Coastal | 90 | 12 | 36 | 10 | 0.3816 | 2.0630 | 1.98000 | 2.162 | 0.1226 | 0.3800 | Coastal | 90 | 12 | 36 | 5000 | 1.3030 | 0.5916 | 0.05321 | 1.157 | 0.5026 | 1.1300 |
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李天松, 阳荣凯, 高翔, 黄艳虎. 水下无线激光传输脉冲响应建模[J]. 光学学报, 2019, 39(11): 1101001. Tiansong Li, Rongkai Yang, Xiang Gao, Yanhu Huang. Impulse Response Modeling for Underwater Wireless Laser Transmission[J]. Acta Optica Sinica, 2019, 39(11): 1101001.