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星载激光雷达探测海面风速昼夜差异研究

, PP. 29-35

Keywords: 激光技术,海面风速,昼夜对比,精度

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Abstract:

采用夜间数据反演海面风速已经取得较好的研究成果。由于受到太阳直射光和天空背景辐射等因素的影响,星载激光雷达信号在白天的信噪比较差。基于已有的反演关系模型,采用CALIPSO星载激光雷达532nm通道2007年1月、4月、7月和10月的单脉冲昼夜数据,将AOD数据用来做大气双程透过率校正,以准同步的AMSR-Ev7版本的海面风速为真值,进行反演海面风速的昼夜对比研究。研究结果表明,采用白天数据反演海面风速是可行的。通过采用恰当的关系模型来反演白天风速可以提高探测精度。

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