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拉曼雷达测量大气二氧化碳浓度回波信号误差分析

Keywords: 拉曼雷达,二氧化碳,误差分析

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Abstract:

拉曼雷达探测二氧化碳的后向散射回波信号十分微弱,有效分析信号的误差非常重要.从理论上分析了拉曼激光雷达探测二氧化碳气体的回波信号误差的计算方法,推导计算了二氧化碳浓度信号的混合比,得到了影响信号误差的3种因素,并对各因素进行了理论计算,从实验上对信号误差进行了数据验证.将理论值与实验数据进行对比,确定信号采集过程中造成的数据误差小于10%,并随距离的增加而增加;大气透过率相对函数的误差约为2%;标定常数的误差小于5%.

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