|
|
|
|
|
|
Research on Wireless Ultraviolet Scattering Characteristics of Rainfall Particles |
ZHAO Tai-fei, ZHAO Si-ting, DUAN Yu-zhen, ZHANG Ying |
School of Automation and Information Engineering, Xi’an University of Technology, Xi’an 710048, China |
|
|
Abstract As ultraviolet light will be scattered by rainfall particles, the changes of scattered light characteristics can reflect the physical properties (such as particle size parameters, density and shape ) of rainfall particles. Therefore, it is of great significance to study the influence of the physical parameters of the particles on the characteristics of the scattered light that can effectively improve the accuracy of the detection of precipitation by spectroscopy. Due to the representation of raindrops in non-spherical precipitation particles, in this paper, the raindrop particles are taken as an example. Using the UV line-of-sight and non-line-of-sight scattering models, we analyzed the relationship between the scattered light intensity and a series of object parameters, including wavelength of incident light, the morphology of raindrop particles, rainfall intensity and particle size. For non-spherical raindrop particles, we also simulated and analyzed the relationship between scattering angle and scattered light intensity at different particle size, rainfall intensity and the influence of wind shear in rainfall on ultraviolet light scattering properties using Monte Carlo method. Through theoretical and simulation analysis, the path loss under different groups of raindrop particle shapes, the scattered light intensity distribution under different rainfall intensity, wind shear rate and particle size were obtained. The simulation results show that the communication quality in the rainfall environment is worse than that in the sunny day, which means greater path loss under UV LOS and NLOS communication. When the particle size distribution is known with the increase of rainfall intensity, attenuation coefficient increase and the path loss increase, the attenuation of LOS communication can be less than about 7 dB for NLOS communication. With the increase of rainfall intensity, wind shear rate and particle size, scattered light intensity curve shows a downward trend, among which, the change in rainfall intensity has the greatest effect on the scattered light intensity. When the communication distance is the same, the intensity distribution of UV light scattering under different rainfall intensity decreases with the increase of scattering angle, when the scattering angle increases by more than 90 degrees, the effective scattering volume decreases, the received photon energy decreases, so the scattering intensity in rainstorm attenuation is larger. Under the same rainfall intensity, when the wind shear is taken into account, the scattering intensity decreases, and the path loss increases about 5 dB when compared with that without wind. In addition, the effects of ellipsoid and Chebyshev particles on the intensity of UV light scattering have also been studied in this paper, which show that when the particle size is the same, the attenuation of ellipsoid particles is larger than that of Chebyshev particles. The scattered light intensity distribution and path loss of the scattering particles can be used to distinguish whether the raindrop particles are composed of the same particle size and morphology, providing a theoretical basis for particle measurement. And we analyzed the characteristics of light scattering of raindrop particles in rainfall, which provides a theoretical basis for improving the numerical simulation of rainfall attenuation assessment by spectroscopy and also provides a design reference for the wide application of optical technology in the detection and identification of rainfall phenomena and other meteorological fields.
|
Received: 2018-05-28
Accepted: 2018-09-20
|
|
|
[1] Jorge F, Riva C, Rocha A. IET Microwaves Antennas & Propagation, 2018, 12(4): 479.
[2] Zhang Shihua, Wang Jingyuan, Xu Zhiyong. Optics & Laser Technology, 2016, 80: 51.
[3] ZHAO Tai-fei, KE Xi-zheng(赵太飞, 柯熙政). Acta Physica Sinica(物理学报), 2012, 61(11): 285.
[4] Mori S, Marzano F S. Effects of Multiple Scattering Due to Atmospheric Water Particles on Outdoor Free Space Optical Links. European Conference on Antennas and Propagation. IEEE, 2014: 1042.
[5] Vo Quang Sang, FENG Peng, MI De-ling, et al(Vo Quang Sang, 冯 鹏, 米德伶, 等). Spectroscopy and Spectral Analysis(光谱学与光谱分析),2015, 35(10): 2691.
[6] GONG Jia-min, LI Chen, JIANG Xiao-bo(巩稼民, 李 晨, 姜小波). Semiconductor Optoelectronics, 2016, 37(1): 87.
[7] Sun Yu, Gong Chen, Xu Zhengyuan, et al. IEEE Photonics Journal, 2017, 9(3): 53.
[8] SHAO Chang-cheng, MA Jin-ji(邵长城, 麻金继). Journal of Atomic and Molecular Physics(原子与分子物理学报), 2010, 27(3): 475.
[9] Grabner M, Kvicera V. Journal of Lightwave Technology, 2014, 32(3): 513.
[10] LIU Xi-chuan, GAO Tai-chang, QIN Jian(刘西川,高太长,秦 健). Acta Physica Sinica(物理学报), 2010, 59(3): 2156.
[11] Howard J, Gerogiokas M. IEEE Transactions on Antennas & Propagation, 2003, 30(1): 141.
[12] KE Xi-zheng(柯熙政). UV Ad-Hoc Network Theory(紫外光自组织网络理论). Beijing: Science Press(北京: 科学出版社), 2011. 44.
[13] Xu Changming, Zhang Hongming, Cheng Julian. Optics Express, 2015, 23(18): 23259.
[14] YANG Tong-xiao, WANG Zhen-hui, ZHANG Pei-chang(杨通晓, 王振会, 张培昌). Plateau Weather(高原气象), 2009, 28(5): 997. |
[1] |
ZHANG Xue-fei1, DUAN Ning1, 2*, JIANG Lin-hua1, 2*, CHENG Wen2, YU Zhao-sheng3, LI Wei-dong2, ZHU Guang-bin4, XU Yan-li2. Study on Stability and Sensitivity of Deep Ultraviolet Spectrophotometry Detection System[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2022, 42(12): 3802-3810. |
[2] |
XIE Zhuo1, 3, WANG Hai-jian1, DOU Yin-ping1*, SONG Xiao-wei1*, LIN Jing-quan1, 2. Characteristics of Extreme Ultraviolet and Debris Emission From Laser Produced Bi Plasma[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2022, 42(07): 2056-2062. |
[3] |
SONG Peng1, CAI Yuan-min1*, GENG Xiao-jun2, GUO Hua1, JI Han-wu1, ZHANG Guo-qing3. Study on Scattering Transmission Characteristics of Wireless UV Communication Based on Particle Size Distribution[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2022, 42(03): 970-977. |
[4] |
CHEN Feng-xia1, YANG Tian-wei2, LI Jie-qing1, LIU Hong-gao3, FAN Mao-pan1*, WANG Yuan-zhong4*. Identification of Boletus Species Based on Discriminant Analysis of Partial Least Squares and Random Forest Algorithm[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2022, 42(02): 549-554. |
[5] |
FU Rui-yun1, FU Xiao-hui1, ZHANG Wen-bo1,4*, LI Dong-qing2, GUAN Cheng3,4, ZHANG Hou-jiang3,4. A Qualitative and Quantitative NIRs Study on Larch Wood Surface Color Change by UV Light Irradiation[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2022, 42(01): 56-61. |
[6] |
LU Li-min, SHI Bin, TANG Tian-yu, ZHAO Xian-hao, WEI Xiao-nan, TANG Yan-lin*. Spectral Analysis of Epinephrine Molecule Based on Density Functional Theory[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2022, 42(01): 248-252. |
[7] |
LIN Yan1, SU Jun-hong1*, TANG Yan-lin2, YANG Dan3. Ultraviolet Spectrum and Excitation Properties Calculations of Vitamin C Based on Density Functional Theory[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2022, 42(01): 304-309. |
[8] |
XU Hui-hua, SHI Dong-po*, WU Hao, YIN Xian-qing, ZHENG Yan-cheng, CHEN Wu, LI Geng. Influence of AEO-9 on Ultraviolet Absorbance Spectrum of TDBAC Reduced by β-CD[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2021, 41(12): 3931-3935. |
[9] |
YANG Lu-ze, LIU Miao*. Construction of a 3D-QSAR Model With Dual Spectral Effects and Its Application in Molecular Modification of Environmentally Friendly PBBs[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2021, 41(02): 430-434. |
[10] |
TONG Ang-xin, TANG Xiao-jun*, ZHANG Feng, WANG Bin. Species Identification of NaCl, NaOH and β-Phenylethylamine Based on Ultraviolet Spectrophotometry and Supervised Pattern Recognition Technology[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2021, 41(02): 448-453. |
[11] |
CHEN Ying1,XU Yang-mei1, DI Yuan-jian1,CUI Xing-ning1,ZHANG Jie1,ZHOU Xin-de1,XIAO Chun-yan2, LI Shao-hua3. COD Concentration Prediction Model Based on Multi-Spectral Data Fusion and GANs Algorithm[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2021, 41(01): 188-193. |
[12] |
YANG Hui-qin1, 2, ZHANG Bo1, 2, MA Ling1, 2, SHANG Yi1, 2, GAO Dong-li1, 2*. Extraction and Spectroscopic Analysis of Chlorogenic Acid in Diploid Potato[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2020, 40(12): 3860-3864. |
[13] |
ZHANG Cong-cong1, LIU Lian-dong2, XIA Lei1, LI Xue3, ZHANG Xiao-kai1*. Preparation of ZnSe/ZnS Core-Shell Quantum Dots Under UV Irradiation[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2020, 40(11): 3409-3415. |
[14] |
LI Xin1, SU Cheng-zhi1,2*, YU Dan-yang1, SHENG Yu-bo1, CHANG Chuan1, SHI Lei1, JIANG Ji-guang1. Study on the Influence of Wavelength and Low Temperature on COD Detection by Ultraviolet Spectroscopy[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2020, 40(08): 2403-2408. |
[15] |
HE Zhi-heng1, XU Rong2, LIN Jun-feng2, YAN Ning1, CHEN Chun-xia3, CHEN Run-quan3, CHAI Xin-sheng1, 3*. Tri-Wavelength UV Spectroscopy Method by Figuring out the Isobestic Points Shift for the Determination of Fluorescent Whitening Agents in Paper Products[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2020, 40(06): 1758-1762. |
|
|
|
|