激光技术2012，Vol.36Issue(4)：493-496,4.DOI:10.3969/j.issn.1001-3806.2012.04.015
气泡尾流光束衰减测量中的复散射校正
Multiple scattering correction to measurement of beam attenuation in bubble wakes
鲁刚 1孙春生 2张晓晖2
作者信息
- 1. 南京理工大学机械工程学院,南京210094
- 2. 海军工程大学兵器工程系,武汉430033
- 折叠
摘要
Abstract
For analyzing the influence of multiple scattering on measuring beam attenuation in bubble wakes, the correction coefficient was introduced which denotes the extent of multiple scattering, and its theoretical formulations was derived by means of a narrow angle approximation solution to the radiation transfer equation. Given a typical bubbles size distribution function and number density in bubbles wakes, the relation among the correction coefficient and detector Geld of view ( FOV), wake optical depth, beam size, received section size were analyzed by numerical calculation. Analysis shows that the influence of FOV in forward small angle on the correction coefficient is great, but it has a little change when the FOV is wide; and the impact of optical depth on the correction coefficient is prominent, besides the impact is more prominent when the optical depth is less than 1; and the effect of received section size on the correction coefficient is very little when depth is less lhan 1, but it becomes visible as the optical depth increase; the influence of beam size on the correction coefficient is comparatively less, further the correction coefficient almost keeps changeless when the beam size is large. The research proposes a theoretical foundation for choice and optimization of conditions during measuring beam attenuation in bubble wakes.关键词
物理光学/复散射校正/辐射传输方程/光束衰减/气泡尾流Key words
physical optics/multiple scattering correction/radiative transfer equation/beam attenuation/bubble wake分类
数理科学引用本文复制引用
鲁刚,孙春生,张晓晖..气泡尾流光束衰减测量中的复散射校正[J].激光技术,2012,36(4):493-496,4.
