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dc.contributor.authorReigber, Andreas
dc.contributor.authorPrats Iraola, Pau
dc.contributor.authorMallorquí Franquet, Jordi Joan
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions
dc.identifier.citationReigber, 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.description.abstractThe 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.subjectÀrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica::Teledetecció
dc.subject.lcshRemote sensing
dc.subject.lcshEarth sciences
dc.subject.lcshRadar Equipment and supplies
dc.subject.lcshImage processing
dc.subject.lcshBoundary layer (Meteorology)
dc.subject.othergeophysical signal processing
dc.subject.othergeophysical techniques
dc.subject.othermotion compensation
dc.subject.otherremote sensing by radar
dc.subject.othersynthetic aperture radar
dc.subject.otherSAR focusing
dc.subject.otherairborne SAR data
dc.subject.otherairborne SAR interferometry
dc.subject.otherdigital elevation model
dc.subject.othermotion compensation
dc.subject.othermultisquint processing approach
dc.subject.othernavigation system
dc.subject.otherrepeat-pass systems
dc.subject.otherresidual motion errors
dc.subject.othersynthetic aperture radar
dc.subject.othertime-varying baseline errors
dc.titleRefined estimation of time-varying baseline errors in airborne SAR interferometry
dc.subject.lemacSensors remots
dc.subject.lemacCiències de la terra
dc.subject.lemacImatge -- Processament
dc.subject.lemacCapa límit (Meteorologia)
dc.contributor.groupUniversitat Politècnica de Catalunya. RSLAB - Grup de Recerca en Teledetecció
dc.description.peerreviewedPeer Reviewed
dc.rights.accessOpen Access

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