| 激光多脉冲探测的计算机模拟与实验研究 |
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| 引用本文： | 张宇,赵远,杨勇,唐勐,靳辰飞,孙秀冬.激光多脉冲探测的计算机模拟与实验研究[J].红外与激光工程,2007,36(1):60-63. |
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| 作者姓名： | 张宇 赵远 杨勇 唐勐 靳辰飞 孙秀冬 |
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| 作者单位： | 1. 哈尔滨工业大学,物理系,黑龙江,哈尔滨,150001
2. 天津津航技术物理研究所,天津,300192 |
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| 摘 要： | 对激光多脉冲探测理论进行了分析，在考虑了影响探测的各种噪声及其分布特性的基础上，得到了激光多脉冲探测信噪比与脉冲积累次数的定量关系。利用计算机仿真模拟多脉冲探测，其结果与理论分析相符；在实验室条件下对多脉冲探测进行了研究，实验结果表明，在脉冲叠加数较少时，实验与理论符合得很好，当脉冲叠加数较多时，实验数据明显小于理想的数值，分析了出现这种偏差的原因及解决方案。激光多脉冲积累探测可以有效地提高激光探测的信噪比，应用积累探测的方式能有效地将激光探测的弱信号从强噪声背景中检测出来。
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| 关 键 词： | 激光多脉冲积累探测 计算机模拟与实验 信噪比 弱信号检测 |
| 文章编号： | 1007-2276(2007)01-0060-04 |
| 收稿时间： | 2005/11/1 |
| 修稿时间： | 2005-11-01 |
Computer simulation and experiments for laser multi-pulse detection |
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| ZHANG Yu,ZHAO Yuan,YANG Yong,TANG Meng,JIN Chen-fei,SUN Xiu-dong.Computer simulation and experiments for laser multi-pulse detection[J].Infrared and Laser Engineering,2007,36(1):60-63. |
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| Authors: | ZHANG Yu ZHAO Yuan YANG Yong TANG Meng JIN Chen-fei SUN Xiu-dong |
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| Affiliation: | 1.Department of Physics, Harbin Institute of Technology, Harbin 150001, China; 2.Tianjin Jinhang Institute of Technical Physics, Tianjin 300192, China |
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| Abstract: | Theoretical analysis of laser multi-pulse accumulation detection is carried.The quantitative relation of laser multi-pulse accumulation detection SNR with multi-pulse accumulation times is obtained under taking into the account of the all kinds of noise and its distributing characteristics.Computer simulation of laser multi-pulse accumulation detection study is performed and its result accords with the theoretical analysis.The experiment of laser multi-pulse accumulation detection is performed in the lab condition,and shows that the experimental results accord with the theoretical results very well at the less quantity of accumulation times,and the experimental results are less than the theoretical results clearly at the more quantity of accumulation times.The cause of the departure existence is studied and the solving method is presented.The SNR of laser detection can be improved effectively by the multi-pulse accumulation detection,and the weak signal can be detected from strong noise background by using the multi-pulse accumulation detection method. |
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| Keywords: | Laser multi-pulse accumulation detection Computer simulation and experiments SNR Weak signal detection |
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