摘要
分析了基于非均匀采样功率谱反演大气湍流相位屏的算法,该算法可进行并行处理,并引入图形处理单元(GPU),在不影响模拟精度的前提下有效提高了相位屏的模拟速度。利用Kolmogorov功率谱,基于GPU技术生成大气湍流相位屏;对相位屏的模拟精度、模拟速度和误差进行统计分析,并与理论值进行比较。结果表明利用GPU技术模拟的大气湍流相位屏与理论值非常吻合,具有很高的模拟速度和精度,大幅提高了大气湍流相位屏的生成速度。
An algorithm of inverting atmospheric turbulence phase screen based on non-uniform sampling power spectrum is analyzed. Parallel progressing can be realized in the algorithm, and a graphics processing unit （GPU） is introduced. The speed of phase screen simulation can be effectively improved without affecting the simulation precision. Atmospheric turbulence phase screen is generated based on GPU technique while the Kolmogorov power spectrum is used. The simulation accuracy, simulation speed and error of phase screen are statistically analyzed and compared with theoretical values. Results show that the atmospheric turbulence phase screen simulated by GPU technique is consistent with the theoretical value, and has high simulation speed and higb. simulation precision. The generation speed of atmospheric turbulence phase screen is greatly improved.
出处
《激光与光电子学进展》
CSCD
北大核心
2017年第2期73-81,共9页
Laser & Optoelectronics Progress
基金
国家自然科学基金(11503018)
关键词
大气光学
大气湍流相位屏
功率谱
非均匀采样
图形处理单元
atmospheric optics
atmospheric turbulence phase screen
power spectrum
non-uniform sampling
graphics processing unit
