星载激光雷达探测海面风速昼夜差异研究

J4 ›› 2013, Vol. 30 ›› Issue (1): 29-35.

星载激光雷达探测海面风速昼夜差异研究

孙雨辰，吴东

中国海洋大学信息科学与工程学院, 山东青岛 26610

出版日期:2013-01-28 发布日期:2013-01-11
通讯作者: 吴东，（1964 -）博士，教授，主要从事海洋光学与激光探测方面的研究。 E-mail:dongwu@ouc.edu.cn
作者简介:孙雨辰（1987-）研究生.E-mail：rcyuchen0210@126.com
基金资助:
国家自然科学基金项目(40876017,41076116)资助项目

Contrastive study on day and night sea surface wind speed detection using CALIPSO lidar measurements

SUN Yuchen, WU Dong

College of Information Science and Engineering,Ocean University of China, Qingdao,266100, China

Published:2013-01-28 Online:2013-01-11

摘要/Abstract

摘要：

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532 nm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-E v7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。

关键词: 激光技术, 海面风速, 昼夜对比, 精度

Abstract:

For retrieving sea surface wind speed, good results have been achived with CALIPSO lidar night data. During the daytime, spaceborne lidar has a poor signal to noise ratio due to the irradiation of direct sunlight and the sky. Based on the existing retrieval model, sea surface wind speeds of day and night are retrieved using CALIPSO lidar 532 nm day and night single-shot data of January, April, July and October in 2007, with AOD for two-way atmospheric transmittance. The collocated version 7 AMSR-E sea surface wind speeds are used as the true values for comparison. The results show that, it is feasible to use CALIPSO daytime lidar data for sea surface wind speed retrieval, and the precision can be increased with the use of appropriate retrieval model.

Key words: laser techniques, sea surface wind speed, contrast of day and night, precision

孙雨辰, 吴东. 星载激光雷达探测海面风速昼夜差异研究[J]. J4, 2013, 30(1): 29-35.

SUN Yuchen, WU Dong. Contrastive study on day and night sea surface wind speed detection using CALIPSO lidar measurements[J]. J4, 2013, 30(1): 29-35.

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