| 信号延时叠加提高激光雷达探测信噪比 |
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| 引用本文： | 姜海娇,来建成,王春勇,卞保民,李振华.信号延时叠加提高激光雷达探测信噪比[J].光子学报,2009,38(8). |
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| 作者姓名： | 姜海娇 来建成 王春勇 卞保民 李振华 |
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| 作者单位： | 南京理工大学,理学院,南京,210094 |
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| 摘 要： | 以激光雷达回波信号的频谱特征为基础,提出了用信号延时叠加来提高激光雷达探测信噪比的方法.通过实验测量获取了大量激光雷达回波信号,并以此为基础,讨论了信号延时叠加提高激光雷达探测信噪比的可行性.结果表明:在系统带宽50 MHz、回波脉宽30 ns的条件下,通过信号延时叠加可提高激光雷达的探测信噪比在40%以上,且存在最佳的延时时间.
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| 关 键 词： | 激光雷达 信噪比 信号延时叠加 |
Improvement of Detecting SNR of Laser Radar by Time-Delay Superimposition |
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| JIANG Hai-jiao,LAI Jian-cheng,WANG Chun-yong,BIAN Bao-min,LI Zhen-hua.Improvement of Detecting SNR of Laser Radar by Time-Delay Superimposition[J].Acta Photonica Sinica,2009,38(8). |
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| Authors: | JIANG Hai-jiao LAI Jian-cheng WANG Chun-yong BIAN Bao-min LI Zhen-hua |
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| Institution: | School of Science;Nanjing university of Science and Technology;Nanjing 210094;China |
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| Abstract: | A new method of by time-delay superimposition was developed which could effectively improve the detecting signal-noise-rate of laser radar on the basis of spectral characteristic analysis.A larger number of laser radar echo signal was obtain by experiment.And the practicability of using time-delay superimposition to improve the detecting signal-noise-rate of laser radar was discussed on the basis of it.The results show that on the condition of 50 MHz system bandwidth and 30 ns impulse width of echo wave,tim... |
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| Keywords: | Laser radar Signal-noise-rate Time-delay superimposition |
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