Numerical simulation of laser propagation in ocean turbulence with the nonuniform fast Fourier transform algorithm

doi:10.1117/1.OE.59.10.106109

CORC > 光电技术研究所 > 中国科学院光电技术研究所 > 自适应光学技术研究室（八室）

	Numerical simulation of laser propagation in ocean turbulence with the nonuniform fast Fourier transform algorithm
	Jin, Ruiyan; Wang, Shuai; Yang, Ping
刊名	OPTICAL ENGINEERING
	2020-10-26
卷号	59 期号:10 页码:106109-1-13
ISSN号	0091-3286
DOI	10.1117/1.OE.59.10.106109
文献子类	期刊论文
英文摘要	Our work studies the spatial distribution of ocean optical turbulence through numerical simulation. We used the ocean optical turbulence phase screen created by the ocean power spectrum to study the effect of varying the refractive index of water via a laser beam propagating through ocean optical turbulence. Because the intensity of ocean optical turbulence is much higher than that of atmospheric turbulence, when simulating the ocean phase screen, traditional methods based on the fast Fourier transform (FFT) algorithm introduce enormous errors in the low-frequency band. Some interpolation algorithms commonly used in atmospheric turbulence simulation can reduce these errors. However, their calculation complexity is always high, so the computational speed is slow. We combine a nonuniform sampling method based on variations in the ocean turbulent power spectrum and the nonuniform FFT algorithm to generate phase screens of ocean optical turbulence. The proposed algorithm can solve the deficiency of the long runtime of the traditional algorithm with even better accuracy. In addition to the traditional phase structure function, we measured the far-field distribution of the laser transmitting through water turbulence caused by temperature contrasts, and the experimental results have outstanding agreement with the simulated far-field image from our ocean phase screen. To the best of our knowledge, this is the first work to verify the accuracy of the phase screen by conducting far-field image experiments. (C) 2020 Society of Photo-Optical Instrumentation Engineers (SPIE)
WOS关键词	PHASE-SCREEN
语种	英语
WOS记录号	WOS:000590245500051
内容类型	期刊论文
源URL	[http://ir.ioe.ac.cn/handle/181551/10162]
专题	光电技术研究所_自适应光学技术研究室（八室）
作者单位	Chinese Acad Sci, Inst Opt & Elect, Chengdu, Peoples R China
推荐引用方式 GB/T 7714	Jin, Ruiyan,Wang, Shuai,Yang, Ping. Numerical simulation of laser propagation in ocean turbulence with the nonuniform fast Fourier transform algorithm[J]. OPTICAL ENGINEERING,2020,59(10):106109-1-13.
APA	Jin, Ruiyan,Wang, Shuai,&Yang, Ping.(2020).Numerical simulation of laser propagation in ocean turbulence with the nonuniform fast Fourier transform algorithm.OPTICAL ENGINEERING,59(10),106109-1-13.
MLA	Jin, Ruiyan,et al."Numerical simulation of laser propagation in ocean turbulence with the nonuniform fast Fourier transform algorithm".OPTICAL ENGINEERING 59.10(2020):106109-1-13.