On the Reduction of the Systematic Error in Imaging Radiometry by Aperture Synthesis: A New Approach for the SMOS Space Mission

被引：11
|
作者：
Khazaal, Ali [1 ]
Carfantan, Herve [1 ]
Anterrieu, Eric [1 ]
机构：
[1] Univ Toulouse, CNRS, Lab Astrophys Toulouse Tarbes, F-31400 Toulouse, France
来源：
IEEE GEOSCIENCE AND REMOTE SENSING LETTERS | 2009年 / 6卷 / 01期
关键词：
Aperture synthesis; imaging radiometry; inverse problem; reconstruction bias; regularization;
D O I：
10.1109/LGRS.2008.2004722
中图分类号：
P3 [地球物理学]; P59 [地球化学];
学科分类号：
0708 ; 070902 ;
摘要：
The Soil Moisture and Ocean Salinity (SMOS) mission is a European Space Agency project aimed at global monitoring of surface SMOS from radiometric L-band observations. This letter is concerned with the reduction of the systematic error (or bias) in the reconstruction of radiometric brightness temperature maps from SMOS interferometric measurements. A recent and efficient method has been proposed for reducing this error. However, a residual bias still persists. A new approach for reducing this bias down to residual values less than 0.1 K is presented here and illustrated with numerical simulations.
引用
收藏
页码：47 / 51
页数：5
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