Investigating the effect of the physical scattering mechanism of the dual-polarization sentinel-1 data on the temporal coherence optimization results

Assessment of the Contribution of Polarimetric Persistent Scatterer Interferometry on Sentinel-1 Data

“…We first review in this section the contribution of this work with respect to previous PolPSI studies with S1 data [20]- [22]. The general findings about the increase in pixel density, and hence spatial coverage of the deformation results, are in agreement with the results already published.…”

“…However, since the launch of several satellites with extended polarimetric capabilities in late 2000's, such as ALOS-PALSAR, Radarsat-2, COSMO-SKYMED, and TerraSAR-X, some efforts were conducted to study how the additional polarimetric channels measured by them could help improve the performance of PSI. For that purpose, Polarimetric PSI (PolPSI) approaches have been proposed and evaluated with dual-pol TerraSAR-X data [7]- [14], dual-pol ALOS-PALSAR [14], quad-pol Radarsat-2 data [13], [15]- [19], and also recently with dual-pol S1 data [20]- [22].…”

“…The resulting increase in pixel density over different urban units (i.e., commercial, industrial and residential) was analyzed. Another work based on S1 data [20] was aimed at optimising the temporal coherence by properly combining the two channels. In the end, an increase of pixel density was found, together with an overall temporal coherence better than the one provided by the VV channel alone.…”

Sentinel-1 Big Data Processing with P-SBAS InSAR in the Geohazards Exploitation Platform: An Experiment on Coastal Land Subsidence and Landslides in Italy

“…Future research on this area will also attempt the exploitation of the VH data, both for comparison and in combination with VV. While the use of the VH data alone provides lower performance in terms of candidates and final persistent targets identification due to the generally lower amplitude of cross-polarized imagery (e.g., [52]), their combined exploitation with VV data through optimization methods proved capable to enhance the performance (e.g., [52,53]). This could be a way forward for future research specifically aiming to compare the InSAR processing performance and accuracy at different polarizations.…”