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夫琅禾费暗线激光雷达探测青岛市郊大气边界层

张薇 Zhang Wei,吴松华 Wu Songhua,宋小全 Song Xiaoquan,靳磊 Jin Lei

Guangxue Xuebao/Acta Optica Sinica（2013）

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Abstract
激光雷达通过接收微弱的回波信号进行大气探测,具有高时空分辨率等优点,但由于受到强烈太阳背景光的影响,激光雷达白天探测的信噪比提高受到限制,难以对大气物理参数及大气边界层进行全天时同等性能观测.针对此问题,研制了一种新波长、工作在夫琅禾费暗线下的光子计数激光雷达,进而利用夫琅禾费光子计数激光雷达对青岛市郊的大气边界层进行观测实验.发射激光选取太阳暗线波长,激光雷达白天探测的信噪比提高了2～3倍,昼夜探测性能相当.由探测数据反演得到的消光系数显示了2011年夏季青岛郊区大气边界层气溶胶的垂直分布结构特征.
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Key words
Extinction coefficient,Fernald method,Fraunhofer dark lines,Lidar,Remote sensing
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