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Refined estimation of time-varying baseline errors in airborne SAR interferometry
dc.contributor.author | Reigber, Andreas |
dc.contributor.author | Prats Iraola, Pau |
dc.contributor.author | Mallorquí Franquet, Jordi Joan |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions |
dc.date.accessioned | 2008-06-28T14:44:09Z |
dc.date.available | 2008-06-28T14:44:09Z |
dc.date.created | 2005-04-14 |
dc.date.issued | 2006-01-31 |
dc.identifier.citation | Reigber, A.; Prats, P.; Mallorqui, J. J. Refined estimation of time-varying baseline errors in airborne SAR interferometry. IEEE Geoscience and remote sensing letters, 2006, vol. 3, núm. 3, p. 145-149. |
dc.identifier.issn | 1545-598X |
dc.identifier.uri | http://hdl.handle.net/2117/2117 |
dc.description.abstract | The processing of airborne synthetic aperture radar (SAR) data requires a precise compensation of the deviations of the platform movement from a straight line. This is usually carried out by recording the trajectory with a high-precision navigation system and correcting them during SAR focusing. However, due to the lack of accuracy in current navigation systems, residual motion errors persist in the images. Such residual motion errors are mainly noticeable in repeat-pass systems, where they are causing time-varying baseline errors, visible as artefacts in the derived phase maps. In this letter, a refined method for the estimation of time-varying baseline errors is presented. An improved multisquint processing approach is used for obtaining robust estimates of higher order baseline errors over the entire scene, even if parts of the scene are heavily decorrelated. In a subsequent step, the proposed method incorporates an external digital elevation model for detection of linear and constant components of the baseline error along azimuth. Calibration targets in the scene are not necessary. |
dc.format.extent | 145-149 |
dc.language.iso | eng |
dc.publisher | IEEE |
dc.subject | Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica::Teledetecció |
dc.subject.lcsh | Remote sensing |
dc.subject.lcsh | Earth sciences |
dc.subject.lcsh | Radar Equipment and supplies |
dc.subject.lcsh | Image processing |
dc.subject.lcsh | Boundary layer (Meteorology) |
dc.subject.other | geophysical signal processing |
dc.subject.other | geophysical techniques |
dc.subject.other | motion compensation |
dc.subject.other | remote sensing by radar |
dc.subject.other | synthetic aperture radar |
dc.subject.other | SAR focusing |
dc.subject.other | airborne SAR data |
dc.subject.other | airborne SAR interferometry |
dc.subject.other | digital elevation model |
dc.subject.other | motion compensation |
dc.subject.other | multisquint processing approach |
dc.subject.other | navigation system |
dc.subject.other | repeat-pass systems |
dc.subject.other | residual motion errors |
dc.subject.other | synthetic aperture radar |
dc.subject.other | time-varying baseline errors |
dc.title | Refined estimation of time-varying baseline errors in airborne SAR interferometry |
dc.type | Article |
dc.subject.lemac | Sensors remots |
dc.subject.lemac | Ciències de la terra |
dc.subject.lemac | Radar |
dc.subject.lemac | Imatge -- Processament |
dc.subject.lemac | Capa límit (Meteorologia) |
dc.contributor.group | Universitat Politècnica de Catalunya. RSLAB - Grup de Recerca en Teledetecció |
dc.description.peerreviewed | Peer Reviewed |
dc.rights.access | Open Access |
local.personalitzacitacio | true |
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