کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8865252 | 1620702 | 2018 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A laboratory experimental study on laser attenuations by dust/sand storms
ترجمه فارسی عنوان
یک مطالعه آزمایشی آزمایشگاهی در مورد ضعف لیزر توسط طوفان گرد و غبار / شن و ماسه
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موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
علم هواشناسی
چکیده انگلیسی
In this paper, the laser beam attenuation by sand/dust storms is experimentally investigated under controlled lab conditions for 5 laser wavelengths, i.e., 405â¯nm and 532â¯nm in visible band and 850â¯nm, 1064â¯nm and 1550â¯nm in near infrared band. It is found that the attenuation coefficient of the laser links exponentially decreased with the increase of the visibility of dust/sand storms mimicked in a glass chamber with mixed-size sand samples. The longer the laser wavelength, the lower the attenuation coefficient under the same visibility, e.g., when the visible range is 0.1â¯km, 0.5â¯km and 1â¯km, the attenuation coefficient of the laser links with the wavelength 405â¯nm is 174â¯Â±â¯10.9â¯dB/km, 33.7â¯Â±â¯4.7â¯dB/km and 17.7â¯Â±â¯1.6â¯dB/km, while the attenuation coefficient of the laser links with the wavelength 1550â¯nm is 126â¯Â±â¯10.7â¯dB/km, 23.7â¯Â±â¯10.8â¯dB/km and 9.6â¯Â±â¯2.5â¯dB/km, respectively. In addition, it is found that the attenuation decreases with increasing effective particle size under a given visibility. Furthermore, based on the experimental results and Kruse model, an improved model for the calculation of laser beam attenuation by sand/dust storms, which is a function of both laser wavelength and effective particle size of the sand/dust storms, is proposed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Aerosol Science - Volume 121, July 2018, Pages 31-37
Journal: Journal of Aerosol Science - Volume 121, July 2018, Pages 31-37
نویسندگان
Haichao Zhong, Jùn Zhou, Zhixin Du, Li Xie,