Improved receiver architecture for future L-band radiometer missions

被引：0

作者：

Lahtinen, Janne

Piironen, Petri ^{[1
]}

Colliander, Andreas ^{[1
]}

Martin-Neira, Manuel ^{[1
]}

机构：

[1] ESA, ESTEC, Noordwijk, Netherlands

来源：

IGARSS: 2007 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM, VOLS 1-12: SENSING AND UNDERSTANDING OUR PLANET | 2007年

关键词：

radiometers; remote sensing; active cold load;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Microwave radiometer measurements are viable technique for measurement of soil moisture and ocean salinity. Therefore, there is a strong interest in new L-band remote sensing radiometers. For example, European Space Agency's SMOS (Soil Moisture and Ocean Salinity) satellite is currently under development. SMOS applies Noise Injection Radiometer subsystem for the measurement of the average brightness temperature of the scene. This paper proposes the use of reference channel control method for the future L-band radiometer missions, e.g., for potential SMOS follow-on mission. According to analysis, significant improvement in radiometric resolution (up to 40%) would be achieved compared to traditional antenna channel noise injection architecture. The proposed system is based on the use of an Active Cold Load (ACL) as cold reference.

引用

页码：5247 / +

页数：2

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