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遥感技术与应用  2005, Vol. 20 Issue (1): 133-136    DOI: 10.11873/j.issn.1004-0323.2005.1.133
研究与应用     
神舟4号”飞船微波辐射计亮温反演海面温度、风速和大气水汽含量
李 芸1,王振占2
(1.国家海洋技术中心,天津 300111;2.中国科学院空间科学与应用研究中心,北京 100080)
Retrievals of Sea Surface Temperatures, Wind Speeds,Volume Water Vapor Contents From SZ-4 RAD Brightness Temperatures
LI Yun1 , WANG Zhen-zhan2
( 1. National Ocean Technology Center , Tianjin 300111, China; 2. Center f or Space and Applied Research, Chinese Academy of Sciences, Beijing 100080, China)
 全文: PDF 
摘要:

“神舟4号”飞船微波辐射计是我国自行研制的第一个星载被动微波遥感器。自从“神舟4号”飞船发射以后,RAD获得了大量的地球表面南北纬40°以内的不同通道的微波辐射电压数据。通过定标调整,得到地球表面的微波辐射亮温。利用同步的RAD和TMI产品数据,建立了海面温度、风速和大气水汽含量的反演算法。然后利用TMI数据产品对反演算法进行了检验。结果表明二者具有很好的一致性,在无雨的情况下,海面温度、风速和大气水汽含量的均方根误差分别为1.40℃、0.35ms和2.71mm。

关键词: 神舟4号”飞船微波辐射计海面温度反演风速反演水汽含量反演    
Abstract:

The multi-channel microwave radiometer ( RAD) on-aboard SZ-4 spacecraft was the first spaceborne microwave radiometer in China which launched at the end of 2002. In order to apply the brightness temperatures obtained by RAD, We developed an antenna pattern correct ( APC) algorithms for deriving brightness temperatures from calibrated antenna temperatures for all RAD frequencies and incidence angles. A set of statistical algorithms of retrieving sea surface temperatures ( SST ) , wind speeds (WS) ,volume watervapor contents (WV ) above the global ocean were put forward. We compared the retrievals with geophysical products of TMI. Rms of 2.13℃ for SST, 0.44m/s for WS, and 2. 80mm for WV were obtained from comparing respectively . At the end of the paper, we gave a summary of comparisons. After deleting the matched data with rain, i.e, volume liquid contents above0.3mm, we derived SST, WS, and WV withrms of 1.40℃、0.35m/ s and 2.71mm, respectively, which showed that rain has great effects on the retrieving these parameters, especially on SST retrievals. Genarally , Brightness temparetures by vicarious external calibration can be used for re rieving SST, WS, and WV at certain accuracy.

Key words: SZ-4 microwave radiometer    Seasurface temperature    Wind speed    Volume watervapor  
收稿日期: 2004-09-26 出版日期: 2011-11-16
:  TP722.6   
作者简介: 李芸(1978-),女,工学硕士,主要研究方向为被动微波遥感技术在海洋上的应用,其中包括星载微波辐射计辐射校正方法研究、现场测试技术和方法研究、海洋和大气水文气象参数反演算法研究等。
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引用本文:

李 芸,王振占. 神舟4号”飞船微波辐射计亮温反演海面温度、风速和大气水汽含量[J]. 遥感技术与应用, 2005, 20(1): 133-136.

LI Yun, WANG Zhen-zhan. Retrievals of Sea Surface Temperatures, Wind Speeds,Volume Water Vapor Contents From SZ-4 RAD Brightness Temperatures. Remote Sensing Technology and Application, 2005, 20(1): 133-136.

链接本文:

http://www.rsta.ac.cn/CN/10.11873/j.issn.1004-0323.2005.1.133        http://www.rsta.ac.cn/CN/Y2005/V20/I1/133

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