Title :
Initial Results of a Digital Radiometer with Digital Beamforming
Author :
Bosch-Lluis, X. ; Ramos-Perez, I. ; Camps, A. ; Marchan-Hernandez, J.F. ; Rodríguez-Álvarez, N. ; Valencia, E. ; Guerrero, M.A. ; Nieto, J.M.
Author_Institution :
Dept. Teor. del Senyal i Comunicacions, Univ. Politec. de Catalunya, Barcelona
Abstract :
In ESA´s SMOS mission it is expected to improve the sea surface salinity retrieval using multi-angular information to correct for sea state effects. A multi-beam, digitally steered radiometer with polarization synthesis has been proposed for the first time as a part of the PAU instrument (Passive Advanced Unit for the ocean monitoring project). This paper provides theoretical and experimental results of extending the calibration algorithms of a digital radiometer obtained in to any number of receivers in order to achieve the digital beamforming.
Keywords :
ocean chemistry; oceanographic equipment; ESA SMOS mission; PAU instrument; Passive Advanced Unit; calibration algorithms; digital beamforming; multiangular information; multibeam digitally steered radiometer; ocean monitoring project; polarization synthesis; receivers; sea state effects correction; sea surface salinity retrieval; Array signal processing; Calibration; Information retrieval; Instruments; Monitoring; Oceans; Polarization; Radiometry; SMOS mission; Sea surface salinity; calibration; field-programmable gate array (FPGA); pseudo-correlation; radiometer;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2008. IGARSS 2008. IEEE International
Conference_Location :
Boston, MA
Print_ISBN :
978-1-4244-2807-6
Electronic_ISBN :
978-1-4244-2808-3
DOI :
10.1109/IGARSS.2008.4779034
