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• Ramos-Perez, I
• Camps, A
• Bosch-Lluis, X
• Rodriguez-Alvarez, N
• Valencia-Domènech, E
• Park, H
• Forte, G
• Vall-llosera, M
• [+] on Google Scholar
• Ramos-Perez, I
• Camps, A
• Bosch-Lluis, X
• Rodriguez-Alvarez, N
• Valencia-Domènech, E
• Park, H
• Forte, G
• Vall-llosera, M
• [+] on PubMed
• Ramos-Perez, I
• Camps, A
• Bosch-Lluis, X
• Rodriguez-Alvarez, N
• Valencia-Domènech, E
• Park, H
• Forte, G
• Vall-llosera, M

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Sensors 2012, 12(6), 7738-7777; doi:10.3390/s120607738

Article

PAU-SA: A Synthetic Aperture Interferometric Radiometer Test Bed for Potential Improvements in Future Missions

Isaac Ramos-Perez* , Adriano Camps, Xavi Bosch-Lluis, Nereida Rodriguez-Alvarez, Enric Valencia-Domènech, Hyuk Park, Giuseppe Forte and Merce Vall-llosera

Remote Sensing Lab., Department Signal Theory and Communications, Universitat Politecnica de Catalunya (UPC) Campus Nord, Bldg D3, E-08034 Barcelona, Spain

* Author to whom correspondence should be addressed.

Received: 4 April 2012; in revised form: 23 May 2012 / Accepted: 30 May 2012 / Published: 7 June 2012

(This article belongs to the Section Physical Sensors)

Download PDF Full-Text [8987 KB, Updated Version, uploaded 8 June 2012 15:10 CEST]

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Abstract: The Soil Moisture and Ocean Salinity (SMOS) mission is an Earth Explorer Opportunity mission from the European Space Agency (ESA). Its goal is to produce global maps of soil moisture and ocean salinity using the Microwave Imaging Radiometer by Aperture Synthesis (MIRAS). The purpose of the Passive Advanced Unit Synthetic Aperture (PAU-SA) instrument is to study and test some potential improvements that could eventually be implemented in future missions using interferometric radiometers such as the Geoestacionary Atmosferic Sounder (GAS), the Precipitation and All-weather Temperature and Humidity (PATH) and the Geostationary Interferometric Microwave Sounder (GIMS). Both MIRAS and PAU-SA are Y-shaped arrays with uniformly distributed antennas, but the receiver topology and the processing unit are quite different. The purpose of this work is to identify the elements in the MIRAS’s design susceptible of improvement and apply them in the PAU-SA instrument demonstrator, to test them in view of these future interferometric radiometer missions.

Keywords: microware; interferometric radiometer; calibration; soil moisture and ocean salinity; SMOS; Passive Advanced Unit Synthetic Aperture (PAU-SA)

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