Scattering noise estimation of range-gated imaging system in turbid condition.
Scattering noise estimation of range-gated imaging system in turbid condition.
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DOI：
10.1364/oe.18.021147
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发表时间：
2010-09
期刊：
影响因子：
3.8
通讯作者：
ChingSeong Tan;G. Seet;A. Sluzek;Xin Wang;Chai Tong Yuen;C. Fam;H. Wong
中科院分区：
文献类型：
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作者：
ChingSeong Tan;G. Seet;A. Sluzek;Xin Wang;Chai Tong Yuen;C. Fam;H. Wong
距离选通成像系统是一种可靠的水下成像系统，具有减小混浊介质后向散射影响的能力。尾选通技术已经被开发用于微调信号与后向散射的比率，从而改善选通图像质量。然而，尾选通技术在高浊度水平下具有有限的图像质量增强。建立了混浊介质中近距离目标距离选通水下成像系统的数学模型。仿真结果与实验结果吻合良好。使用该数值模型的进一步研究表明，后向散射噪声的多次散射分量占主导地位的传播长度大于4.2衰减长度（AL）。这限制了尾门技术在高浊度条件下的增强。
The range-gated imaging systems are reliable underwater imaging system with the capability to minimize backscattering effect from turbid media. The tail-gating technique has been developed to fine tune the signal to backscattering ratio and hence improve the gated image quality. However, the tail-gating technique has limited image quality enhancement in high turbidity levels. In this paper, we developed a numerical model of range-gated underwater imaging system for near target in turbid medium. The simulation results matched the experimental work favorably. Further investigation using this numerical model shows that the multiple scattering components of the backscattering noise dominate for propagation length larger than 4.2 Attenuation Length (AL). This has limited the enhancement of tail-gating technique in high turbidity conditions.