A Parameterized Surface Emission Model at L-Band for Soil Moisture Retrieval

NCU Institutional Repository > 研究中心 > 太空及遙測研究中心 > 期刊論文 > Item 987654321/50615

jsp.display-item.identifier=請使用永久網址來引用或連結此文件: http://ir.lib.ncu.edu.tw/handle/987654321/50615

题名:	A Parameterized Surface Emission Model at L-Band for Soil Moisture Retrieval
作者:	Chen,L;Shi,JC;Wigneron,JP;Chen,KS
贡献者:	太空及遙測研究中心
日期:	2010
上传时间:	2012-03-27 17:49:04 (UTC+8)
出版者:	國立中央大學
摘要:	The effects of soil surface roughness play a significant role in the microwave emission from the surface. Therefore, a good parameterization of the effects is a prerequisite for retrieving surface soil moisture information. With recent physical model developments, the advanced integral equation model (AIEM) has been proven to provide accurate representation over a wide range of surface-roughness conditions. We evaluated the capability of the AIEM model in simulating multiangular surface emission signals in comparison with a field experiment data set. A simplified multiangular surface emission model was developed based on simulated database using the AIEM model. Based on the parameterized model, an inversion procedure was developed using dual-polarization microwave brightness temperatures to retrieve soil moisture. Two data sets were used to test the inversion algorithm, and the accuracies in root-mean-square error were about 4% for incidence angles from 20 degrees to 50 degrees. This new simple model is suitable for soil moisture retrieval from future L-band satellite data.
關聯:	IEEE GEOSCIENCE AND REMOTE SENSING LETTERS
显示于类别:	[太空及遙測研究中心] 期刊論文

文件中的档案:

档案	描述	大小	格式	浏览次数
index.html		0Kb	HTML	637	检视/开启

在NCUIR中所有的数据项都受到原著作权保护.

社群 sharing