| 机载双波长米散射激光雷达大气回波信号与信噪比的模拟计算 |
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| 引用本文： | 季承荔,周军.机载双波长米散射激光雷达大气回波信号与信噪比的模拟计算[J].大气与环境光学学报,2008,3(4):250-261. |
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| 作者姓名： | 季承荔 周军 |
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| 作者单位： | 中国科学院安徽光学精密机械研究所大气光学中心,安徽,合肥,230031;中国科学院安徽光学精密机械研究所大气光学中心,安徽,合肥,230031 |
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| 摘 要： | 为了研究机载双波长米散射激光雷达的技术参数对其探测性能的影响,为该激光雷达的设计与研制提供理论分析依据,使用合适的大气消光模式和机载米散射激光雷达方程,对其接收的大气后向散射回波信号以及信噪比进行了模拟计算,讨论了几何重叠因子和不同消光模式对回波信号的作用,分析了激光脉冲能量、累积激光脉冲数、接收视场、滤光片半宽度等技术参数对信噪比的影响.结果表明设计的机载激光雷达完全可以进行10 km高度以下大气气溶胶和云的探测.
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| 关 键 词： | 机载激光雷达 模拟计算 回波信号 信噪比 |
| 收稿时间： | 2008/5/14 |
Simulation of Signal and Signal-to-noise Ratio Received by an Airborne Dual-wavelength Mie Lidar |
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| JI Cheng-li,ZHOU Jun.Simulation of Signal and Signal-to-noise Ratio Received by an Airborne Dual-wavelength Mie Lidar[J].Journal of Atmospheric and Environmental Optics,2008,3(4):250-261. |
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| Authors: | JI Cheng-li ZHOU Jun |
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| Affiliation: | JI Cheng-li ZHOU Jun (Center for Atmospheric Optics,Anhui Institute of Optics , Fine Mechanics,Chinese Academy of Sciences,Hefei 230031,China) |
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| Abstract: | For studying the effects of technical parameters of the airborne dual-wavelength Mie lidar on its detection performance,offering theoretic evidence for the lidar's design and development,the airborne Mie scattering lidar equation,appropriate atmospheric extinction model,as well as the design parameters of the lidar are used to calculate atmospheric backscattering signal profiles and the signal-to-noise ratio(SNR) profiles received by the lidar.The effects of overlap function and different atmospheric models... |
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| Keywords: | airborne lidar simulation signal signal-to-noise ratio |
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