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Títol:	Robust array configuration for a microwave interferometric radiometer: application to the geoSTAR project
Autor/a:	Torres Torres, Francisco; Tanner, Alan B.; Brown, S. T.; Lambrigsten, Bjorn H.
Altres autors:	Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions; Universitat Politècnica de Catalunya. RSLAB - Grup de Recerca en Teledetecció
Abstract:	The Geostationary Synthetic Thinned Array Radiometer represents a promising new approach to microwave atmospheric sounding from geostationary orbit based on passive interferometry. One of the major concerns about the feasibility of this new concept is related to the ability of the sensor to cope with the failure of one or several of its single receivers/antennas. This letter shows that the inclusion of a small percentage of additional antennas significantly reduces the degradation of radiometric resolution caused by such receiver failure. Impact of antenna failure is analyzed, taking into account two test images with very different spatial harmonic content. A tradeoff analysis of several array topologies is performed so as to minimize the number of additional antennas while keeping worst case radiometric error within a reasonable level.
Abstract:	Peer Reviewed
Matèries:	-Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica::Teledetecció -Satellites -Electromagnetic waves -Optical measurements -Radiation Measurement -Statistical methods -Radar -atmospheric techniques -microwave antenna arrays -radiometers -GeoSTAR Project -Geostationary Synthetic Thinned Array Radiometer -antenna failure -microwave atmospheric sounding -microwave interferometric radiometer -passive interferometry -radiometric error -radiometric resolution degradation -receiver failure -robust array configuration -Satèl·lits -Ones electromagnètiques -Òptica -- Mesuraments -Radiació -- Mesurament -Mètodes estadístics -Radar
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Tipus de document:	Article
Publicat per:	IEEE Institute of Electrical and Electronics Engineers
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