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Communication Dans Un Congrès Année : 2020

A new L-band passive radiometer for earth observation : SMOS-high resolution (SMOS-HR)

O. Merlin
  • Fonction : Auteur
Jérôme Vialard
A. Khaazal
  • Fonction : Auteur
Miguel Colom
M.J. Escorihuela
  • Fonction : Auteur
A. Al Bitar
Arnaud Mialon

Résumé

The European Space Agency (ESA) Soil Moisture and Ocean Salinity (SMOS) has been providing the longest consistent data record of passive L-band (1.4 GHz) observations for more than ten years. SMOS, as well as the NASA missions SMAP and Aquarius have demonstrated the interest of L-band observations for land, ocean and cryosphere studies. The continuity of L-band observations must be assured taking into account that the spatial resolution (~ 40 km) of SMOS and SMAP is too coarse for some applications. Disaggregation strategies can be implemented but using airborne data, we show that the quality of the downscaled data cannot match that of an instrument with higher native resolution. The goal of the SMOS-HR (High Resolution) mission is to ensure the continuity of L-band observations while increasing the native resolution to 10 km. SMOS-HR will carry an array of ~ 230 antennas to perform aperture synthesis. The antenna distribution has been optimized to reduce the aliasing in the reconstructed images and SMOS-HR will incorporate advanced on-board Radio Frequency Interferences (RFI) mitigation techniques.
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Dates et versions

hal-03927608 , version 1 (06-01-2023)

Identifiants

Citer

N.J. Rodriguez-Fernandez, Eric Anterrieu, F. Cabot, Jacqueline Boutin, Ghislain Picard, et al.. A new L-band passive radiometer for earth observation : SMOS-high resolution (SMOS-HR). IGARRS.International Geoscience and Remote Sensing Symposium, Sep 2020, Waikoloa, United States. pp.5978-2981, ⟨10.1109/IGARSS39084.2020.9324685⟩. ⟨hal-03927608⟩
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