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距离选通在水下激光成像系统中的应用

Application Research of Range-Gated Technique in Underwater Laser Imaging System

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摘要

介绍了距离选通水下激光成像技术的原理及其技术进展,并具体设计与实现了一种新型的水下激光成像系统。距离选通成像方式是一种减小水介质后向散射的有效方法,利用水介质对可见光光谱的低损耗窗口效应,采用蓝绿波长的脉冲激光器提供主动照明,CCD作为接收器,可在提高目标场景照度的同时,减小后向散射的影响,实现水下距离选通激光成像。实验证明,水下距离选通激光成像技术可以克服传统水下成像的缺点,具有成像清晰,对比度高,不受环境光源的影响等优点,已成为国内外重点研究的关键技术。

Abstract

The report provides the principle and advances of range-gated underwater laser imaging technology. A novel prototype underwater laser imaging system has been designed and developed. The range-gated technique is one of the effective methods to decrease the backward scattering of the water. By using the lower attenuation window for the water in the visible light spectrum, pulse laser with the blue-green wavelength has been adopted as an illumination source and CCD as the receiver. The range-gated underwater laser imaging system has been successfully fulfilled. The system can decrease the influence of backward scattering and at the same time the system can improve target luminance. The detail schematic principle and realization scheme have been analyzed. It has been found that the range-gated underwater laser imaging system could improve the imaging quality and the imaging distance by conveniently adjusting the pulse delay and the pulse width. It has been become one of the key techniques in underwater laser imaging research field.

补充资料

中图分类号:TN247

所属栏目:激光制造

基金项目:总装军事预研项目(1060741001030205)和广西高校科研基金资助课题。

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作者单位    点击查看

陈名松:桂林电子科技大学信息与通信学院, 广西 桂林 541004
李天松:桂林电子科技大学信息与通信学院, 广西 桂林 541004
何志毅:桂林电子科技大学信息与通信学院, 广西 桂林 541004

联系人作者:陈名松(cms@guet.edu.cn)

备注:陈名松(1967-),男,瑶族,湖南人,教授,硕士生导师,主要从事光通信、宽带光网络、光电子技术等方面的研究。

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引用该论文

Chen Mingsong,Li Tiansong,He Zhiyi. Application Research of Range-Gated Technique in Underwater Laser Imaging System[J]. Chinese Journal of Lasers, 2008, 35(s1): 197-203

陈名松,李天松,何志毅. 距离选通在水下激光成像系统中的应用[J]. 中国激光, 2008, 35(s1): 197-203

被引情况

【1】解则晓,李绪勇,辛少辉,徐尚. 水下线结构光自扫描三维测量技术. 中国激光, 2010, 37(8): 2010-2014

【2】雷选华,杨克成. 一种基于FPGA水下激光成像系统的同步控制器. 激光技术, 2010, 34(5): 682-685

【3】王飞,赵远,张宇,孙秀冬. 激光脉冲强度对于盖革模式单光子探测测距精度影响的理论研究. 光学学报, 2010, 30(10): 2771-2775

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