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CALIOP 532 nm通道光电接收系统瞬时响应研究

Transient Response of CALIOP 532 nm Photoelectric Receiving Systems

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摘要

使用Version 3.01 (V3)、Version 4.0 (V4)星载激光雷达CALIOP Level 1 (L1) 廓线数据和Level 2 (L2) 的大气气溶胶和云层数据,对CALIOP 532 nm通道的 不理想瞬时响应进行分析。对不同时间、地点的数据进行晴空条件的筛选,比较不同晴空条件下的瞬时响应,再利用夜间特晴条件的数据比较不同天底角、 版本数据条件下的瞬时响应,同时也探究了地表信号强度对瞬时响应的影响。结果表明,不同晴空条件的结果不同,提取瞬时响应要选用特晴数据; 裸地地表类型(tIGBP=16)不受其他散射物的影响; V3、V4版本变化及天底角改变对瞬时响应没影响;地表后向散射信号 强度大小对瞬时响应有影响,去除了小于0.40 km-1sr-1的弱信号。

Abstract

CALIOP receiver system transient response of 532 nm channel is not ideal. It is analyzed by using Version 3.01 (V3), Version 4.0 (V4) Level 1 (L1) profile data and Level 2 (L2) atmospheric aerosol and cloud layer data. The transient responses are compared in different time and location, different clear atmospheric conditions, different nadir and different version of data. In addition, the influence of surface signal strength on the transient response is explored. Results show that the version change and the nadir change have no effect on the transient response; the clearest air condition is necessary to choose; desert (tIGBP=16) is the better object for the analysis of transient response; the signal strength of surface attenuated backscatter has influence on the transient response. These strengths less than 0.40 km-1sr-1are weak signal, needed to be removed.

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中图分类号:TN958;P407

DOI:10.3969/j.issn.1673-6141.2018.01.002

所属栏目:大气光学

基金项目:Supported by National Natural Science Foundation of China(国家自然科学基金, 41376180)

收稿日期:2017-01-13

修改稿日期:2017-02-20

网络出版日期:--

作者单位    点击查看

张清华:中国海洋大学信息科学与工程学院海洋技术系,山东 青岛 266100
吴东:中国海洋大学信息科学与工程学院海洋技术系,山东 青岛 266100
于素真:中国海洋大学信息科学与工程学院海洋技术系,山东 青岛 266100

联系人作者:吴东(dongwu@ouc.edu.cn)

备注:张清华 (1986-),女,汉族,山东滨州人,研究生,主要从事海洋与激光探测方面的研究。

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引用该论文

ZHANG Qinghua,WU Dong,YU Suzhen. Transient Response of CALIOP 532 nm Photoelectric Receiving Systems[J]. Journal of Atmospheric and Environmental Optics, 2018, 13(1): 20-26

张清华,吴东,于素真. CALIOP 532 nm通道光电接收系统瞬时响应研究[J]. 大气与环境光学学报, 2018, 13(1): 20-26

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