Remote Sensing (May 2020)

Deriving VTEC Maps from SMOS Radiometric Data

  • Roselena Rubino,
  • Nuria Duffo,
  • Verónica González-Gambau,
  • Ignasi Corbella,
  • Francesc Torres,
  • Israel Durán,
  • Manuel Martín-Neira

DOI
https://doi.org/10.3390/rs12101604
Journal volume & issue
Vol. 12, no. 10
p. 1604

Abstract

Read online

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.

Keywords