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典型滤波器对星载高光谱分辨率激光雷达532 nm通道回波信号的影响

余骁 闵敏 张兴赢 孟晓阳 邓小波

余骁, 闵敏, 张兴赢, 孟晓阳, 邓小波. 典型滤波器对星载高光谱分辨率激光雷达532 nm通道回波信号的影响[J]. 红外与激光工程, 2018, 47(12): 1230008-1230008(10). doi: 10.3788/IRLA201847.1230008
引用本文: 余骁, 闵敏, 张兴赢, 孟晓阳, 邓小波. 典型滤波器对星载高光谱分辨率激光雷达532 nm通道回波信号的影响[J]. 红外与激光工程, 2018, 47(12): 1230008-1230008(10). doi: 10.3788/IRLA201847.1230008
Yu Xiao, Min Min, Zhang Xingying, Meng Xiaoyang, Deng Xiaobo. Effect of typical filters on return signals of spaceborne HRSL channel at 532 nm[J]. Infrared and Laser Engineering, 2018, 47(12): 1230008-1230008(10). doi: 10.3788/IRLA201847.1230008
Citation: Yu Xiao, Min Min, Zhang Xingying, Meng Xiaoyang, Deng Xiaobo. Effect of typical filters on return signals of spaceborne HRSL channel at 532 nm[J]. Infrared and Laser Engineering, 2018, 47(12): 1230008-1230008(10). doi: 10.3788/IRLA201847.1230008

典型滤波器对星载高光谱分辨率激光雷达532 nm通道回波信号的影响

doi: 10.3788/IRLA201847.1230008
基金项目: 

国家重点研发计划(2017YFB0504001,2016YFB0500705);国家自然科学基金(41475032,41571348,41601400,41775028)

详细信息
    作者简介:

    余骁(1992-),男,硕士生,主要从事星载激光雷达方面的研究。Email:274779518@qq.com

  • 中图分类号: TN958.98

Effect of typical filters on return signals of spaceborne HRSL channel at 532 nm

  • 摘要: 高光谱分辨率激光雷达(High Spectral Resolution Lidar,HSRL)系统利用窄带滤波器将激光雷达回波信号中的大气粒子(云或气溶胶)散射和分子散射成分分开,提升了云或气溶胶光学特性的反演质量。提出了一种基于HSRL探测原理的HSRL回波信号模拟方法,其原理是利用CALIPSO云/气溶胶消光系数产品和数值天气预报数据被用来仿真星载HSRL 532 nm回波信号。两种典型的窄带光谱滤波器:FPI(Fabry-Prot Interferometer)和碘吸收滤波器,作为分子通道滤波器的性能通过仿真的星载HSRL回波信号进行分析。对三种典型:晴空、卷云、气溶胶(两层厚云)的HSRL回波廓线进行详细的敏感分析表明碘分子吸收滤波器的性能明显优于FPI滤波器,其中碘吸收滤波能保持可以忽略不计的相对偏差(4.010-3%),这是由低光学厚度(1.0)的粒子后向散射效应引起的。但是,如果FPI滤波器的粒子后向散射透过率能保持在10-3水平以下,其仍不失为是一个好的选择。
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  • 收稿日期:  2018-07-05
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  • 刊出日期:  2018-12-25

典型滤波器对星载高光谱分辨率激光雷达532 nm通道回波信号的影响

doi: 10.3788/IRLA201847.1230008
    作者简介:

    余骁(1992-),男,硕士生,主要从事星载激光雷达方面的研究。Email:274779518@qq.com

基金项目:

国家重点研发计划(2017YFB0504001,2016YFB0500705);国家自然科学基金(41475032,41571348,41601400,41775028)

  • 中图分类号: TN958.98

摘要: 高光谱分辨率激光雷达(High Spectral Resolution Lidar,HSRL)系统利用窄带滤波器将激光雷达回波信号中的大气粒子(云或气溶胶)散射和分子散射成分分开,提升了云或气溶胶光学特性的反演质量。提出了一种基于HSRL探测原理的HSRL回波信号模拟方法,其原理是利用CALIPSO云/气溶胶消光系数产品和数值天气预报数据被用来仿真星载HSRL 532 nm回波信号。两种典型的窄带光谱滤波器:FPI(Fabry-Prot Interferometer)和碘吸收滤波器,作为分子通道滤波器的性能通过仿真的星载HSRL回波信号进行分析。对三种典型:晴空、卷云、气溶胶(两层厚云)的HSRL回波廓线进行详细的敏感分析表明碘分子吸收滤波器的性能明显优于FPI滤波器,其中碘吸收滤波能保持可以忽略不计的相对偏差(4.010-3%),这是由低光学厚度(1.0)的粒子后向散射效应引起的。但是,如果FPI滤波器的粒子后向散射透过率能保持在10-3水平以下,其仍不失为是一个好的选择。

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