空间差分吸收激光雷达探测地表大气压力的波长选择
投稿时间:2017-07-18  修订日期:2018-01-18  点此下载全文
引用本文:洪光烈.空间差分吸收激光雷达探测地表大气压力的波长选择[J].红外与毫米波学报,2018,37(2):206~211].洪光烈.Operating wavelength selection for spaceborne differential absorption lidar measuring surface pressure[J].J.Infrared Millim.Waves,2018,37(2):206~211.]
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作者单位E-mail
洪光烈 中国科学院上海技术物理研究所 glhong@mail.sitp.ac.cn 
基金项目:中国科学院空间主动光电技术国防科技创新重点实验室基金(CXJJ-17S024)资助,国家自然科学基金项目(面上项目,重点项目,重大项目)
中文摘要:用路径积分差分吸收激光雷达探测地表大气压力,首先要解决选择怎样波长的激光向大气中发射,然后根据所选波长的差分光学厚度,计算地面或云顶的大气压力。根据美国标准大气模型进行了蒙特卡诺模拟,仿真研究了大气温度的不确定性对大气压力探测带来的随机误差和系统偏差,发现在氧气的A带中选择764.765nm和765.094nm为探测波长online,选择位于两者之间的764.948nm为参考波长offline,是获得较小探测误差的一种方案;优化的探测波长既不在A带的吸收线上,亦不在某两吸收线之间的凹槽中间,而是位于A带吸收线p12和p13线的侧翼,这一结果对于建立积分路径差分吸收激光雷达探测地表大气压力的遥感仪器,起到参考作用。
中文关键词:大气光学,差分吸收激光雷达,地表压力,探测波长,参考波长
 
Operating wavelength selection for spaceborne differential absorption lidar measuring surface pressure
Abstract:Measuring surface pressure from space is aimed at with an integrated path differential absorption (IPDA) lidar. We report the selection of the lidar instrument operating wavelengths, the Monte Carlo simulation was made, knowledge that imprecise temperature affect on the systemic bias andrandom errorsof surface pressure measurement was developed. When 764.765nm and 765.094nm were selected as detection wavelengths, then 764.948nm between both online was selected as reference wavelengths, the emulation research show that measurement error is least.Excellent detection wavelength was neither in absorptionpeak value wavelength, nor was in trough between two absorption line, that were on wing of p12 and p13 absorption line of A band. This result has refrence function to build up an IPDA for measurement of surface pressure.
keywords:atmosphere optics, integrated path differential absorption lidar, surface pressure, detection wavelength, reference wavelength
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