Publications

Sanchez, Nilda; Piles, Maria; Martinez-Fernandez, Jose; Vall-Ilossera, Merce; Pipia, Luca; Camps, Adriano; Aguasca, Albert; Perez-Araguees, Fernando; Herrero-Jimenez, Carlos M. (2014). Hyperspectral Optical, Thermal, and Microwave L-Band Observations For Soil Moisture Retrieval at Very High Spatial Resolution. PHOTOGRAMMETRIC ENGINEERING AND REMOTE SENSING, 80(8), 745-755.

Abstract
The results of an experiment conducted in Spain over the Soil Moisture Measurement Stations Network of the University of Salamanca (REMEDHUS) are presented. The observations included airborne observations from hyperspectral optical, thermal, and microwave sensors coinciding with intensive field measurements. The hyperspectral optical and thermal datasets were first analyzed and processed to select the best hyperspectral features to be included in the soil moisture retrieval procedure. A linear model linking the selected hyperspectral features to the microwave observations and the in situ soil moisture is proposed. The application of this model resulted in soil moisture estimates that agree with in situ measurements (correlation coefficient: R >0.76, root mean squared differences: RMSD <0.07 m(3)m(-3)). The hyperspectral dataset strengthened the link between optical, thermal and microwave L-band observations with soil moisture, and provided a spatial framework to disaggregate soil moisture at very high spatial resolution (3.5 m), useful in hydrological modeling and precision agriculture.

DOI:

ISSN:
0099-1112