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Robust array configuration for a microwave interferometric radiometer: application to the geoSTAR project
Torres Torres, Francisco; Tanner, Alan B.; Brown, S. T.; Lambrigsten, Bjorn H.
Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions; Universitat Politècnica de Catalunya. RSLAB - Grup de Recerca en Teledetecció
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.
Peer Reviewed
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
Article
IEEE Institute of Electrical and Electronics Engineers
         

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