Deriving VTEC Maps from SMOS Radiometric Data

In this work, a new methodology is proposed in order to derive vertical total electron content (VTEC) maps from the radiometric measurements of the Soil Moisture and Ocean Salinity (SMOS) mission as an alternative approach to those based on external databases and models. This approach uses spatiotem...

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Bibliographic Details
Published in:Remote sensing (Basel, Switzerland) Switzerland), 2020-05, Vol.12 (10), p.1604
Main Authors: Rubino, Roselena, Duffo, Nuria, González-Gambau, Verónica, Corbella, Ignasi, Torres, Francesc, Durán, Israel, Martín-Neira, Manuel
Format: Article
Language:English
Subjects:
Antennas
Brightness temperature
Electromagnetism
Faraday effect
faraday rotation angle (FRA)
Hydrologic cycle
Image processing
Image reconstruction
Interferometry
Ionosphere
L-band
Orbits
Propagation
radiometry
Remote sensing
Salinity
Soil moisture
Thermal noise
vertical total electron content (VTEC)
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Summary:In this work, a new methodology is proposed in order to derive vertical total electron content (VTEC) maps from the radiometric measurements of the Soil Moisture and Ocean Salinity (SMOS) mission as an alternative approach to those based on external databases and models. This approach uses spatiotemporal filtering techniques with optimized filters to be robust against the thermal noise and image reconstruction artifacts present in SMOS images. It is also possible to retrieve the Faraday rotation angle from the recovered VTEC maps in order to correct the effect that it causes in the SMOS brightness temperatures.
ISSN:2072-4292
2072-4292
DOI:10.3390/rs12101604