中国激光, 2017, 44 (11): 1105001, 网络出版: 2017-11-17   

海洋湍流中扩展物体漫反射光成像的数值模拟 下载: 909次

Numerical Simulation of Imaging by Diffuse Reflection Light from Extended Objects in Oceanic Turbulence
作者单位
四川师范大学物理与电子工程学院, 四川 成都 610068
摘要
采用空域滤波方法和海洋湍流功率谱, 编制了海洋湍流中扩展物体漫反射光成像的模拟仿真程序, 研究了成像质量与海洋湍流参数和接收孔径之间的关系。研究发现, 随着海水湍流功率谱中由温度引起的海水折射率变化与由盐度变化引起的海水折射率变化的比率的增大, 海水温度方差耗散率的增大, 以及单位质量海水动能耗散率的减小, 海洋湍流的可见参数减小, 成像质量变差。该数值模拟方法为研究海洋湍流中扩展物体的漫反射光成像提供了一种可行、正确的方法。
Abstract
By using the spatial filtering method and the oceanic turbulence power spectra, the numerical simulation program of imaging by diffuse reflection light from extended objects in oceanic turbulence is designed. The dependence of the imaging quality on the oceanic turbulence parameters and the receiver size is studied. It is found that, with the increases of the ratio of seawater refractive index change caused by temperature to that caused by salinity in the oceanic turbulence power spectra and the dissipation rate of seawater temperature variance, and with the decrease of the dissipation rate of kinetic energy per unit fluid mass, the seeing parameter in oceanic turbulence decreases and the imaging quality degrades. The proposed numerical simulation method provides a feasible and correct approach for the study of imaging by diffuse reflection light from extended objects in oceanic turbulence.

罗燏娟, 季小玲, 李晓庆. 海洋湍流中扩展物体漫反射光成像的数值模拟[J]. 中国激光, 2017, 44(11): 1105001. Luo Yujuan, Ji Xiaoling, Li Xiaoqing. Numerical Simulation of Imaging by Diffuse Reflection Light from Extended Objects in Oceanic Turbulence[J]. Chinese Journal of Lasers, 2017, 44(11): 1105001.

本文已被 2 篇论文引用
被引统计数据来源于中国光学期刊网
引用该论文: TXT   |   EndNote

相关论文

加载中...

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!