Effect of turbulence on visibility and signal-to-noise ratio of lensless ghost imaging with thermal light
Effect of turbulence on visibility and signal-to-noise ratio of lensless ghost imaging with thermal light
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DOI：
10.1016/j.ijleo.2013.05.184
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发表时间：
2013-12
期刊：
影响因子：
3.1
通讯作者：
Yin-ping Yao;Ren-Gang Wan;Shi-Wei Zhang;Tongyi Zhang
中科院分区：
文献类型：
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作者：
Yin-ping Yao;Ren-Gang Wan;Shi-Wei Zhang;Tongyi Zhang
研究了热光在湍流大气中的无透镜鬼影成像。基于扩展的惠更斯-菲涅耳积分和经典光学相干理论，导出了湍流中无透镜鬼像的可见度和信噪比表达式。为了说明湍流对无透镜鬼像成像质量的影响，我们对不同传播距离和不同湍流强度下的能见度和信噪比进行了数值计算。虽然湍流会降低图像质量，但在一定的传播距离内，幽灵成像可以获得特定的可见度和信噪比。
Lensless ghost imaging with thermal light through turbulent atmosphere is investigated. Based on the extended Huygens–Fresnel integral and the classical optical coherence theory, we derive the expressions for the visibility and signal-to-noise ratio (SNR) of lensless ghost imaging through turbulence. To show the effect of turbulence on the quality of lensless ghost imaging, we numerically calculate the visibility and SNR for different propagation distances and various turbulence strengths. Though turbulence degrades the image quality, specific visibility and SNR can be obtained for ghost imaging in certain propagation distances.