Ofertas de Trabajo

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URGENTE: candidatos/as para beca doctorado FPU


Contexto del Proyecto: GNSS-Reflections and Soil Moisture and Ocean Salinity Mission: IEEC + SMOS Barcelona Expert Center (BEC)
Horario: 4 años

Requisitos y Descripción
Calificación: Nota media del expediente académico igual superior a 1.6
Experiencia: Ciencias físicas, ingenierías (comunicaciones, procesado del señal, ...)
Languages: fluent in English

“The Global Navigation Satellite Systems (GNSS) as a source of opportunity for complementing radiometric measurements of the Ocean Salinity”

Àrees: signal processing, remote sensing, Ocean emissivity and reflectometry at L-band


The European Space Agency (ESA) will launch the Soil Moisture and Ocean Salinity mission (SMOS) late in 2008. The L-band radiometer on-board SMOS seeks to measure the weak signals of the Ocean Salinity, a key parameter for weather and ocean forecast that has never been retrieved from space. Besides the technical challenge, the determination of ocean salinity is strongly affected by other geophysical parameters such as the sea surface roughness “sensitive” to L-band radiation, not well characterized yet. A potential tool to help understanding the “L-band roughness” effect and therefore calibrating/correcting the salinity measurements is the worldwide spread and continuous set of L-band signals emitted by the Global Navigation Satellite Systems (GNSS), such as the American Global Positioning System (GPS), the Russian GLONASS, and the future European GALILEO or Chinese COMPASS.

These signals can be used as sources of opportunity for multi-static radar observation of the Ocean at L-band, that is: use the information embedded in the GNSS signals that have been reflected off the sea surface (GNSS-R). It has been proven that they are sensitive to the sea surface roughness, becoming a suitable candidate to supply corrections to the radiometric salinity measurements. The research work aims to better understand the use of the GNSS-R signals for characterization of the sea roughness and its ingestion in the SMOS-like measurement pipeline. To that end, the PhD student will work with ocean and scattering models and real experimental data (GNSS-R and radiometric), in coordination with the teams of the SMOS Barcelona Expert Center (center for development and validation of SMOS retrieval algorithms) and IEEC's groups (CSIC and UPC) involved in GNSS-R and SMOS activities.

Presentación Solicitud
Fecha límite de la solicitud (yyyy-mm-dd): 2007-12-04
Documentos a presentar: please contact E. Cardellach


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