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L-band aperture synthesis radiometry: hardware requirements and system performance
dc.contributor.author | Corbella Sanahuja, Ignasi |
dc.contributor.author | Torres Torres, Francisco |
dc.contributor.author | Camps Carmona, Adriano José |
dc.contributor.author | Bará Temes, Francisco Javier |
dc.contributor.author | Duffo Ubeda, Núria |
dc.contributor.author | Vall-Llossera Ferran, Mercedes Magdalena |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions |
dc.date.accessioned | 2016-06-15T13:49:56Z |
dc.date.available | 2016-06-15T13:49:56Z |
dc.date.issued | 2000 |
dc.identifier.citation | Corbella, I., Torres, F., Camps, A., Bara, F., Duffo, N., Vall-llossera, M. L-band aperture synthesis radiometry: hardware requirements and system performance. A: IEEE International Geoscience and Remote Sensing Symposium. "IGARSS 200: IEEE 2000 International Geoscience and Remote Sensing Symposium: Taking the Pulse of the Planet: The Role of Remote Sensing in Managing the Environment: 24-28 July 2000, L' Hilton Hawaiian Village, Honolulu Hawaii USA: proceedings". Honolulú, Hawaii: IEEE Piscataway, 2000, p. 2975-2977. |
dc.identifier.isbn | 0-7803-6362-0 |
dc.identifier.uri | http://hdl.handle.net/2117/88031 |
dc.description.abstract | Aperture synthesis radiometry is becoming a feasible concept for imaging applications, especially at low microwave frequencies where it takes clear advantage of the absence of mechanical antenna motion. A 2D interferometric radiometer consists of a large number of receivers with small antennas distributed along a 2D structure, and the brightness temperature image is formed by inversion of the measured cross-correlation between all pairs of antennas. This is the concept of MIRAS (MIcrowave Radiometer by Aperture Synthesis), the core instrument of the SMOS (Soil Moisture and Ocean Salinity) mission selected by the European Space Agency (ESA) and planned to be launched in 2005. In its preliminary design, MIRAS receivers are uniformly distributed along a Y-shape structure and work at L-band. This approach, however, poses a challenge in the specifications required for the receivers: a) The short integration time due to the platform motion strongly limits the achievable sensitivity, b) the spatial resolution is determined by the structure dimensions which cannot be made arbitrarily large and c) the radiometric accuracy depends on the non ideal behavior of the receivers, although, to some extent can be corrected by internal calibration. This paper contributes to define the main trade-off between hardware requirements and system performance of this complex instrument. |
dc.format.extent | 3 p. |
dc.language.iso | eng |
dc.publisher | IEEE Piscataway |
dc.subject | Àrees temàtiques de la UPC::Enginyeria de la telecomunicació |
dc.subject | Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica |
dc.subject.lcsh | Geophysics |
dc.subject.lcsh | Hydrography |
dc.subject.other | Geophysical equipment |
dc.subject.other | Geophysical techniques |
dc.subject.other | Hydrological equipment |
dc.subject.other | Hydrological techniques |
dc.title | L-band aperture synthesis radiometry: hardware requirements and system performance |
dc.type | Conference report |
dc.subject.lemac | Geofísica |
dc.subject.lemac | Hidrografia |
dc.contributor.group | Universitat Politècnica de Catalunya. RSLAB - Grup de Recerca en Teledetecció |
dc.identifier.doi | 10.1109/IGARSS.2000.860307 |
dc.description.peerreviewed | Peer Reviewed |
dc.relation.publisherversion | http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=860307 |
dc.rights.access | Open Access |
local.identifier.drac | 2346711 |
dc.description.version | Postprint (published version) |
local.citation.author | Corbella, I.; Torres, F.; Camps, A.; Bara, F.; Duffo, N.; Vall-llossera, M. |
local.citation.contributor | IEEE International Geoscience and Remote Sensing Symposium |
local.citation.pubplace | Honolulú, Hawaii |
local.citation.publicationName | IGARSS 200: IEEE 2000 International Geoscience and Remote Sensing Symposium: Taking the Pulse of the Planet: The Role of Remote Sensing in Managing the Environment: 24-28 July 2000, L' Hilton Hawaiian Village, Honolulu Hawaii USA: proceedings |
local.citation.startingPage | 2975 |
local.citation.endingPage | 2977 |