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Land Geophysical Parameters Retrieval Using the Interference Pattern GNSS-R Technique

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12 Author(s)
Nereida Rodriguez-Alvarez ; Remote Sensing Laboratory of the Polytechnic University of Catalonia (UPC) , Barcelona, Spain ; Adriano Camps ; Mercè Vall-llossera ; Xavier Bosch-Lluis
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In the past years, the scientific community has placed a special interest in remotely sensing soil moisture and vegetation parameters. Radiometry and radar techniques have been widely used for years. Global Navigation Satellite Systems opportunity signals Reflected (GNSS-R) over the earth's surface are younger, but they have already shown their potential to perform these observations. This paper presents a GNSS-R technique, based on Global Positioning System (GPS) measurements, that allows the retrieval of several geophysical parameters from land surfaces. This technique measures the power of the interference signal between the direct GPS signal and the reflected one after scattering over the land, so it is called Interference Pattern Technique (IPT). This paper presents the results obtained after applying the IPT for topography, soil moisture, and vegetation height retrievals over vegetation-covered soils.

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IEEE Transactions on Geoscience and Remote Sensing  (Volume:49 ,  Issue: 1 )