대한원격탐사학회:학술대회논문집 (Proceedings of the KSRS Conference)
- 대한원격탐사학회 2008년도 International Symposium on Remote Sensing
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- Pages.26-28
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- 2008
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- 1226-9743(pISSN)
ESTIMATION OF SOIL MOISTURE WITH AIRBORNE L-BAND MICROWAVE RADIOMETER
- Chang, Tzu-Yin (Center for Space and Remote Sensing Research and Institute of Space Sciences, National Central University) ;
- Liou, Yuei-An (Center for Space and Remote Sensing Research and Institute of Space Sciences, National Central University)
- 발행 : 2008.10.29
초록
Soil moisture plays an important role in the land-atmosphere energy balance because it governs the partitioning of energy through latent heat fluxes or evapotranspiration. From the numerous studies, it is evident that the L-band radiometer is a useful and effective tool to measure soil moisture. The objective of the study is to develop and to verify the soil moisture retrieval algorithms for the L-band radiometer system. Through the radiometer-observed brightness temperature, surface emissivity and reflectivity can be derived, and, hence, soil moisture. We collect field and L-band airborne radiometer data from washita92, SGP97 and SGP99 experiments to assist the development of the retrieval algorithms. Upon launching the satellite L-band radiometer such as ESA-sponsored SMOS (Soil Moisture and Ocean Salinity) mission, the developed algorithms may be used to study and monitor globe soil moisture change.