期刊文献+

植被覆盖地区AMSR-E反演土壤水分算法研究 被引量:6

Soil moisture retrieval with AMSR-E in the region with vegetation coverage
下载PDF
导出
摘要 在已有基于微波辐射传输模型的反演算法基础上,对2003年中国5种地区的AMSR-E观测数据进行了比较分析,引入了微波极化差异指数(MPDl)概念,提出了一种自动区分地面植被覆盖情况的方法。使用这种方法,反演过程中无需地面土地利用分类的辅助数据,同时在对有植被覆盖地区消除植被层的影响的过程中,改进了Richard提出的计算植被消光系数的方程,提高了反演应用中的运算效率。最后给出了AMSR-E反演土壤水分的工作流程,并对反演结果进行了分析。 Based on the theoretical soil moisture retrieval model, the paper analyses the AMSR-E data acquired at 5 example fields in China, 2003, and gives out a method to classify vegetation coverage condition automatically with the Microwave Polarization Difference Index (MPDI), which works without ancillary data about vegetation information. This paper also develops the function to compute vegetation opacity with MDPI, which is put forward by Richard, and improves the efficiency of the retrieval. This paper also gives out the flow chart of the soil moisture retrieval with AMSR-E, and analyzes the retrieval results.
出处 《高技术通讯》 CAS CSCD 北大核心 2006年第2期204-209,共6页 Chinese High Technology Letters
基金 863计划(2003AA131053)和KGW资助项目.致谢:文中所用AMSR-E数据由美国国家雪冰数据中心(National Snow and Ice Data Center)提供,谨致谢意.
关键词 AMSR-E 地表参数 土壤水分 植被层消光系数 微波极化差异指数 AMSR-E, land parameters, soil moisture, opacity depth, MPDI
  • 相关文献

参考文献7

  • 1Njoku E G,Li Li.Retrival of land surface parameters using passive microwave measurements at 6-18GHz.IEEE Trans Geosci Remote Sensing,1999,37:79-93
  • 2Njoku E G,Jackson T J,Lakshmi V,et al.Soil moisture retrieval from AMSR-E.IEEE Trans Geosci Remote Sensing,2003,41:215-229
  • 3Njoku E G.AMSR land surface parameters algorithm theoretical basis document.version 3.0.California Institute of Technology Pasadena,CA:Jet Propulsion Laboratory,1999
  • 4Richard A.M.de Jeu.Retrieval of land surface parameters using passive microwave remote sensing:[Ph.D Thesis].Amsterdam:Vrije Universiteit Amsterdam,2003
  • 5Dobson M C,Ulaby F T,Hallikainen M T,et al.Microwave dielectric behavior of wet soil-part Ⅱ:Dielectric mixing models.IEEE Trans Geosci Remote Sensing,1985,GE-23,(1):35-46
  • 6Li L,Njoku E G,Eastwood I,et al.A preliminary survey of radio-frequency interference over the U.S.in aqua AMSR-E data.IEEE Trans Geosci Remote Sensing,2004,42(2):380-390
  • 7Ashcroft P,Wentz F.AMSR-E/Aqua L2A Global Swath Spatially-Resampled rightnessTemperatures (Tb) V001.http://naidc.org:National Snow and Ice Data Center.DVD

同被引文献165

引证文献6

二级引证文献169

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部