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RSS FeedsRemote Sensing, Vol. 11, Pages 1956: Retrieving Surface Soil Moisture over Wheat and Soybean Fields during Growing Season using Modified Water Cloud Model from Radarsat-2 SAR Data (Remote Sensing)

 
 

20 august 2019 23:00:37

 
Remote Sensing, Vol. 11, Pages 1956: Retrieving Surface Soil Moisture over Wheat and Soybean Fields during Growing Season using Modified Water Cloud Model from Radarsat-2 SAR Data (Remote Sensing)
 


Surface soil moisture (SSM) retrieval over agricultural fields using synthetic aperture radar (SAR) data is often obstructed by the vegetation effects on the backscattering during the growing season. This paper reports the retrieval of SSM from RADARSAT-2 SAR data that were acquired over wheat and soybean fields throughout the 2015 (April to October) growing season. The developed SSM retrieval algorithm includes a vegetation-effect correction. A method that can adequately represent the scattering behavior of vegetation-covered area was developed by defining the backscattering from vegetation and the underlying soil individually to remove the effect of vegetation on the total SAR backscattering. The Dubois model was employed to describe the backscattering from the underlying soil. A modified Water Cloud Model (MWCM) was used to remove the effect of backscattering that is caused by vegetation canopy. SSM was derived from an inversion scheme while using the dual co-polarizations (HH and VV) from the quad polarization RADARSAT-2 SAR data. Validation against ground measurements showed a high correlation between the measured and estimated SSM (R2 = 0.71, RMSE = 4.43 vol.%, p < 0.01), which suggested an operational potential of RADARSAT-2 SAR data on SSM estimation over wheat and soybean fields during the growing season.


 
49 viewsCategory: Geology, Physics
 
Remote Sensing, Vol. 11, Pages 1943: Multi-Hazard Exposure Mapping Using Machine Learning Techniques: A Case Study from Iran (Remote Sensing)
Remote Sensing, Vol. 11, Pages 1968: A New Retrieval Algorithm for Soil Moisture Index from Thermal Infrared Sensor On-Board Geostationary Satellites over Europe and Africa and Its Validation (Remote Sensing)
 
 
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