Soldo Y., Khazaal A., Cabot F., Richaume P., Anterrieu E., Kerr Yann. (2014). Mitigation of RFIS for SMOS : a distributed approach. IEEE Transactions on Geoscience and Remote Sensing, 52 (11), p. 7470-7479. ISSN 0196-2892.
Titre du document
Mitigation of RFIS for SMOS : a distributed approach
Soldo Y., Khazaal A., Cabot F., Richaume P., Anterrieu E., Kerr Yann
Source
IEEE Transactions on Geoscience and Remote Sensing, 2014,
52 (11), p. 7470-7479 ISSN 0196-2892
The Soil Moisture and Ocean Salinity (SMOS) satellite was launched by the European Space Agency on November 2, 2009. Its payload, i.e., Microwave Imaging Radiometer with Aperture Synthesis, which is a 2-D L-band interferometric radiometer, measures the brightness temperatures (BTs) in the protected 1400-1427-MHz band. Although this band was preserved for passive measurements, numerous radio frequency interferences (RFIs) are clearly visible in SMOS data. One method to get rid of these interferences is to create a synthetic signal as close as possible to the measured interference and subtract it from the instrument visibilities. In this paper, we describe an approach to create such a signal and on how to use it for geolocalization of the emitters. Then, different methods for assessing the quality of the mitigation are introduced. Due to the complexity of estimating the effects of mitigation globally, it is finally proposed to use mitigation results to create flag maps about the estimated RFI impact, to be associated with BT measurements.
