20 research outputs found
1/f-noise prediction in millimeter wave detectors based on quasi vertical Schottky diodes
Erratum: '89 GHz zero-bias Schottky detector for direct detection radiometry in European satellite programme MetOp-SG'
High performance HBV multipliers monolithically integrated onto a host quartz substrate
International audienc
89 GHz zero-bias Schottky detector for direct detection radiometry in European satellite programme MetOp-SG
Photonic Crystal Lens: From Negative Refraction and Negative Index to Negative Permittivity and Permeability
A new L-band passive radiometer for earth observation : SMOS-high resolution (SMOS-HR)
IGARRS.International Geoscience and Remote Sensing Symposium, Waikoloa, USA, 26-/09/2020 - 10/02/2020The 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
A new L-band passive radiometer for earth observation : SMOS-high resolution (SMOS-HR)
IGARRS.International Geoscience and Remote Sensing Symposium, Waikoloa, USA, 26-/09/2020 - 10/02/2020The 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
Améliorer la caractérisation des effluents d'élevage par des méthodes et des modÚles innovants pour une meilleure prise en compte agronomique
Poster présenté par l'ACTA dans le cadre du RMT fertilisation et environnement, écrit avec tous les partenaires du projet CasDar Effluents d'Elevage