A Small Baseline DIFSAR Approach for Investigating Deformations on Full Resolution SAR Interferograms


Autoria(s): Lanari, Ricardo; Mora Sacristan, Óscar; Manunta, Michele; Mallorquí Franquet, Jordi Joan; Berardino, P.; Sansoti, Eugenio
Contribuinte(s)

Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions

Data(s)

10/05/2012

Resumo

This paper presents a differential synthetic apertureradar (SAR) interferometry (DIFSAR) approach for investigatingdeformation phenomena on full-resolution DIFSAR interferograms.In particular, our algorithm extends the capabilityof the small-baseline subset (SBAS) technique that relies onsmall-baseline DIFSAR interferograms only and is mainly focusedon investigating large-scale deformations with spatial resolutionsof about 100 100 m. The proposed technique is implemented byusing two different sets of data generated at low (multilook data)and full (single-look data) spatial resolution, respectively. Theformer is used to identify and estimate, via the conventional SBAStechnique, large spatial scale deformation patterns, topographicerrors in the available digital elevation model, and possibleatmospheric phase artifacts; the latter allows us to detect, onthe full-resolution residual phase components, structures highlycoherent over time (buildings, rocks, lava, structures, etc.), as wellas their height and displacements. In particular, the estimation ofthe temporal evolution of these local deformations is easily implementedby applying the singular value decomposition technique.The proposed algorithm has been tested with data acquired by theEuropean Remote Sensing satellites relative to the Campania area(Italy) and validated by using geodetic measurements.

Identificador

http://hdl.handle.net/2117/13290

Idioma(s)

eng

Publicador

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC

Direitos

Consulteu les condicions d'ús d'aquest document en el repositori original:<a href="http://hdl.handle.net/2117/13290">http://hdl.handle.net/2117/13290</a>

Palavras-Chave #Synthetic aperture radar #Interferometry #Signal theory (Telecommunication) #Radar #Senyal, Teoria del (Telecomunicació)
Tipo

info:eu-repo/semantics/article