Impact of Correlator Efficiency Errors on SMOS Land-Sea Contamination

被引：20

作者：

Corbella, Ignasi ^{[1
,2
]}

Duran, Israel ^{[1
,2
]}

Wu, Lin ^{[3
]}

Torres, Francesc ^{[1
,2
]}

Duffo, Nuria ^{[1
,2
]}

Khazaal, Ali ^{[4
]}

Martin-Neira, Manuel ^{[5
]}

机构：

[1] Univ Politecn Cataluna, Remote Sensing Lab, ES-08034 Barcelona, Spain

[2] SMOS Barcelona Expert Ctr, Barcelona 08003, Spain

[3] Chinese Acad Sci, Key Lab Microwave Remote Sensing, Natl Space Sci Ctr, Beijing 100190, Peoples R China

[4] Ctr Etud Spatiales Biosphere, F-31401 Toulouse, France

[5] European Space Agcy, European Space Res & Technol Ctr, NL-2200 AG Noordwijk, Netherlands

来源：

IEEE GEOSCIENCE AND REMOTE SENSING LETTERS | 2015年 / 12卷 / 09期

关键词：

Calibration; imaging; interferometry; radiometry; Soil Moisture and Ocean Salinity (SMOS); CALIBRATION; RADIOMETERS; RECONSTRUCTION; VISIBILITIES; PERFORMANCE; PROCESSOR; MISSION;

D O I：

10.1109/LGRS.2015.2428653

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：

Land-sea contamination observed in Soil Moisture and Ocean Salinity (SMOS) brightness temperature images is found to have two main contributions: the floor error inherent of image reconstruction and a multiplicative error either in the antenna temperature or in the visibility samples measured by the correlator. The origin of this last one is traced down to SMOS calibration parameters to yield a simple correction scheme, which is validated against several geophysical scenarios. Autoconsistency rules in interferometric synthesis together with redundant and complementary calibration procedures provide a robust SMOS calibration scheme.

引用

页码：1813 / 1817

页数：5

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