Generation of large scale digital evaluation models via synthetic aperture radar interferometry

Fornaro, G. and Franceschetti, G. and Lanari, R. and Sansosti, E. and Tesauro, M. (2001) Generation of large scale digital evaluation models via synthetic aperture radar interferometry. Il nuovo cimento C, 24 C (1). pp. 177-192. ISSN 1826-9885

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We investigate the possibility to generate a large-scale Digital Elevation Model by applying the Synthetic Aperture Radar interferometry technique and using tandem data acquired by the ERS-1/ERS-2 sensors. The presented study is mainly focused on the phase unwrapping step that represents the most critical point of the overall processing chain. In particular, we concentrate on the unwrapping problems related to the use of a large ERS tandem data set that, in order to be unwrapped, must be partitioned. The paper discusses the inclusion of external information (even rough) of the scene topography, the application of a region growing unwrapping technique and the insertion of possible constraints on the phase to be retrieved in order to minimize the global unwrapping errors. Our goal is the generation of a digital elevation model relative to an area of 300 km by 100km located in the southern part of Italy. Comparisons between the achieved result and a precise digital terrain model, relative to a smaller area, are also included.

Item Type: Article
Additional Information: Paper presented at the Workshop on Synthetic Aperture Radar (SAR), Florence, 25-26 February, 1998.
Uncontrolled Keywords: Topography; geometric observations ; Cartography ; Telemetry: remote control, remote sensing; radar
Subjects: 500 Scienze naturali e Matematica > 550 Scienze della Terra
Depositing User: Marina Spanti
Date Deposited: 10 Mar 2020 18:10
Last Modified: 10 Mar 2020 18:10

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