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Geosciences 2018, 8(7), 269; https://doi.org/10.3390/geosciences8070269

Generation of Persistent Scatterers in Non-Urban Areas: The Role of Microwave Scattering Parameters

1
Consiglio Nazionale delle Ricerche, Istituto per le Applicazioni del Calcolo, Via Amendola 122/O, 70126 Bari, Italy
2
Centre for Geographical Studies, IGOT—Institute of Geography and Spatial Planning, Universidade de Lisboa, Edifício IGOT, Rua Branca Edmée Marques, 1600-276 Lisboa, Portugal
3
Instituto Dom Luiz, Universidade de Lisboa, Campo Grande, 1749-016 Lisbon, Portugal
*
Author to whom correspondence should be addressed.
Received: 17 June 2018 / Revised: 17 July 2018 / Accepted: 19 July 2018 / Published: 23 July 2018
(This article belongs to the Special Issue Quantitative Geomorphology)
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Abstract

In this work, we study the capability of the ground surface to generate Persistent Scatterers (PS) based on the lithology, slope and aspect angles. These properties affect the scattering behavior of the Synthetic Aperture Radar (SAR) signal, the interferometric phase stability and, as a consequence, the PS generation. Two-time series of interferometric SAR data acquired by two different SAR sensors in the C-band are processed to generate independent PS datasets. The region north of Lisbon, Portugal, characterized by sparse vegetation and lithology diversity, is chosen as study area. The PS frequency distribution is obtained in terms of lithology, slope and aspect angles. This relationship could be useful to estimate the expected PS density in landslide-prone areas, being lithology, slope and aspect angles important landslide predisposing factors. View Full-Text
Keywords: landslides; Synthetic Aperture Radar (SAR); SAR interferometry (InSAR); Persistent Scatterers (PS) landslides; Synthetic Aperture Radar (SAR); SAR interferometry (InSAR); Persistent Scatterers (PS)
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Nico, G.; Oliveira, S.C.; Catalão, J.; Zêzere, J.L. Generation of Persistent Scatterers in Non-Urban Areas: The Role of Microwave Scattering Parameters. Geosciences 2018, 8, 269.

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