POTENTIAL OF SENTINEL-1 FOR HIGH-RESOLUTION SOIL MOISTURE MONITORING

被引：13
|
作者：
Gruber, Alexander [1 ]
Wagner, Wolfgang [1 ]
Hegyiova, Alena [1 ]
Greifeneder, Felix [1 ]
Schlaffer, Stefan [1 ]
机构：
[1] Vienna Univ Technol, Dept Geodesy & Geoinformat, Vienna, Austria
来源：
2013 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM (IGARSS) | 2013年
关键词：
Soil Moisture; Synthetic Aperture Radar; Sentinel-1; ERS SCATTEROMETER; MODE DATA; RETRIEVAL;
D O I：
10.1109/IGARSS.2013.6723717
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：
Soil moisture is a crucial variable for a large variety of applications with different requirements on the spatial and temporal resolution of the observations. Coarse-scale instruments can provide data operationally with a nearly-daily global coverage at a spatial resolution of several hundreds of square kilometers, whereas SAR instruments provide a spatial resolution of less than one hectare to about one square kilometer but with a revisit time varying from several days to several months. This study uses coarse-scale MetOp ASCAT data and higher resolution Envisat ASAR data taken in the GM mode and the WS mode together with in-situ measurements to demonstrate (i) the potential of Sentinel-1 to capture very local soil moisture variations and (ii) the expected impact of the significantly improved radiometric accuracy of Sentinel-1 compared to existing soil moisture missions.
引用
收藏
页码：4030 / 4033
页数：4
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