Robust array configuration for a microwave interferometric radiometer: application to the geoSTAR project
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 wit...
| Autores: | , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2007 |
| País: | España |
| Institución: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/1465 |
| Acceso en línea: | https://hdl.handle.net/2117/1465 |
| Access Level: | acceso abierto |
| Palabra clave: | 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 Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica::Teledetecció |
| Sumario: | 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. |
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