Simulation and Calculation of 10.6μm Laser Time Broadening and Space Broadening Characteristics in Near-Earth Dust

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Based on the Mie scattering theory and the gamma size distribution model, 10.6μm laser scattering characteristics in dust particles are calculated and analyzed.On this basis,the time broadening and space broadening characteristics of the laser are analyzed by using Monte Carlo method.Transmittance change with the transmission distance are quantitative calculated and the time detention and space broadening characteristics of the laser passed through dust for different transmission distances are calculated and analyzed. The results show that the transmittance decreases with increasing transmission distance, and the transmittance is close to 0 when transmission distance is close to 200m; The time delay of 10.6μm laser is more significant with the increaseing transmission distance; The space broadening of 10.6μm laser is more obvious and the energy is more dispersed with the increaseing transmission distance.

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437-440

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September 2013

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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[1] WU Zhen-sen, YOU Jin-guang, Yang Rui-ke. Study on Laser Attenuation Character in Sand and Dust Storms[J]. Chinese Journal of Lasers, 2004, 31(9): 1075-1080.

Google Scholar

[2] Mankovsky Victor I, Haltrin Vladimir I. Light scattering phase functions measured in waters of Mediterranean Sea. MTS-IEEE Proceedings, 2002, 4: 2368-2373.

DOI: 10.1109/oceans.2002.1191998

Google Scholar

[3] E.A. Bucher. Computer simulation of light Pulse Propagation for communication through thick clouds. Appl. Opt. 1973, 12(10): 2391一2400.

DOI: 10.1364/ao.12.002391

Google Scholar

[4] DongQing-sheng. Physical characteristic of sand in China desert area[J]. Chinese Journal of Radio Science, 1997, 12(1): 15-21.

Google Scholar

[5] Yang Rui-ke, Ma Chun-lin, Li Liang-chao. Influence of multiple scattering on Laser pulse propagation through sand and dust storm[J]. Chinese Journal of Lasers, 2007, 34(10): 1393-1397.

Google Scholar

[6] Li Hongwang, Steven L. Jacques, Li Qiongzheng. MCML-Monte Carlo modeling of light transport in multi-layered tissues[J]. Computer Methods and Programs in Biomedicine, 1995, 47: 131-146.

DOI: 10.1016/0169-2607(95)01640-f

Google Scholar