NASA SOIL MOISTURE ACTIVE PASSIVE MISSION STATUS AND SCIENCE PERFORMANCE

被引：7
|
作者：
Yueh, Simon [1 ]
Entekhabi, Dara [2 ]
O'Neill, Peggy [3 ]
Njoku, Eni [1 ]
Entin, Jared [4 ]
机构：
[1] CALTECH, Jet Prop Lab, Pasadena, CA 91125 USA
[2] MIT, Cambridge, MA 02139 USA
[3] NASA, Goddard Space Flight Ctr, Greenbelt, MD USA
[4] Natl Aeronaut & Space Adm Headquarters, Washington, DC USA
来源：
2016 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM (IGARSS) | 2016年
关键词：
Soil moisture; radiometer; radar; microwave remote sensing;
D O I：
10.1109/IGARSS.2016.7729020
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：
The Soil Moisture Active Passive (SMAP) observatory was launched January 31, 2015, and its L-band radiometer and radar instruments became operational during April 2015. The SMAP radiometer has been operating flawlessly, however the radar transmitter ceased operation on July 7. This paper provides a summary of the calibration and validation of the SMAP instruments and the current quality assessment of its soil moisture and freeze/thaw products. Since the loss of the radar, the SMAP project has been conducting two parallel activities to enhance the resolution of its soil moisture products. The first explores the Backus Gilbert optimum interpolation and de-convolution techniques based on the oversampling characteristics of the SMAP radiometer. The second investigates the disaggregation of the SMAP radiometer data using the European Space Agency's Sentinel-1 C-band synthetic aperture radar (SAR) data to obtain soil moisture products at about 1 to 3 km resolution. In addition, SMAP's L-band data have been found useful for many applications, including vegetation opacity, ocean surface salinity and hurricane ocean surface wind mapping. Highlights of these new applications will be provided.
引用
收藏
页码：116 / 119
页数：4
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