First assessment of the interferometric capabilities of SAOCOM-1A: New results over the Domuyo Volcano, Neuquén Argentina

Roa, Yenni Lorena Belen; Rosell, Patricia; Solarte, Andrés; Euillades, Leonardo; Carballo, Federico; García, Sebastián Gimeno; Euillades, Pablo A.

doi:10.1016/j.jsames.2020.102882

Cited by 12 publications

(6 citation statements)

References 29 publications

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“…Test of new sensors should be fostered, considering that preliminary results seem to be promising for both PAZ (Abdikan et al, 2020) and SAOCOM-1 (Roa et al, 2021). As already pointed out by Mondini et al (2021) for landslide investigations, exploitation of new satellites should be encouraged.…”

Section: Technical Frameworkmentioning

confidence: 97%

Review of satellite radar interferometry for subsidence analysis

Raspini

Caleca²,

Soldato³

et al. 2022

Earth-Science Reviews

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Section: Technical Frameworkmentioning

confidence: 97%

Review of satellite radar interferometry for subsidence analysis

Raspini

Caleca²,

Soldato³

et al. 2022

Earth-Science Reviews

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“…where 𝑘 𝑡,𝑝 is the Doppler centroid rate [Hz/s] relevant to 𝑝 in the considered acquisition burst mode [8], [12]. According to (5), the condition in (4) can be translated into the following restriction in terms of synchronization index:…”

Section: A Interferometric Coherence Reductionmentioning

confidence: 99%

“…Therefore, an adequate spectral overlap between repeat-pass bursts relevant to the same area on the ground is not guaranteed. For this reason, the interferometric processing of SAOCOM-1 TOPSAR data is a challenging, sometimes unfeasible, task, generally more complex than that of SAOCOM-1 SM [5]- [7] data or that of synchronized TOPSAR data [8]- [11]. Within this context, evaluating the InSAR capabilities of SAOCOM-1 TOPSAR modes is of great interest, especially if we consider the great amount of available data acquired with these modes.…”

Section: Introductionmentioning

confidence: 99%

Interferometric Assessment of SAOCOM-1 TOPSAR Data

Euillades,

Roa,

Euillades

et al. 2024

IEEE Geosci. Remote Sensing Lett.

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SAOCOM-1 constellation operates in three acquisition modes: Stripmap (SM), TOPSAR Narrow (TNA and TNB) and TOPSAR Wide (TW). Since repeat pass SAOCOM-1 TOPSAR acquisitions are not synchronized, the generation of the related interferometric products is not guaranteed, as it happens instead for the synchronized repeat pass TOPSAR acquisitions, such as those of Sentinel-1.In this work, we assess the suitability of SAOCOM-1 TOPSAR acquisitions for generating interferometric products. To this aim, we first discuss the constraints that must be fulfilled by the repeat pass non-synchronized TOPS acquisitions in order to make it feasible the generation of usable interferograms. Then, we verify if SAOCOM-1 TOPSAR acquisitions fulfill these constraints. For this purpose, we present an analysis based on the use of a data set composed by 18 TNB images relevant to a single subswath illuminating a region located in the South-West of Argentina.From this data set, we were able to select 48 pairs that guarantee the spectral superposition needed for interferometric purposes. We verified that the 50% of these 48 pairs fulfill the constraint required to avoid in the corresponding interferograms the presence of non-coherent azimuth stripes, whose azimuth extension depends on one side on the mis-synchronization percentage between the repeat pass acquisitions, and on the other side on the overlapping percentage between adjacent bursts of the same acquisition.Summing up, the presented analysis proves the potential of SAOCOM-1 TOPSAR acquisitions to obtain interferometric products, despite the absence of bursts synchronization between repeat pass acquisitions.

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“…However, single pair interferometry may present challenges in its processing, especially when there are orbital inaccuracies, which can lead to misestimate the height. In fact, a previous work has shown that SAOCOM-1 interferograms can be improved by applying an orbital correction algorithm when they are affected by these errors (Roa et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

On the Feasibility of Applying Orbital Corrections to Saocom-1 Data With Free Open Source Software (Foss) to Generate Digital Surface Models: A Case Study in Argentina

Seppi¹,

Casanova

Roa

et al. 2021

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci.

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Abstract. In this work we present an orbital correction workflow developed with FOSS tools to compensate for orbital errors present in Synthetic Aperture Radar (SAR) interferograms. The technique is tested in forested areas in Argentina, using full polarimetric images from the argentinean SAR constellation SAOCOM-1 (Satélite Argentino Con Microondas). The results are contrasted with field measurements of canopy height provided by local producers, and the results show that the Root Mean Square Error (RMSE) of the satellite measurements is significantly reduced after the orbital correction. Moreover, forest plantation become more distinguishable in the retrieved Digital Surface Models, especially in those pairs with larger spatial baseline. A section of this article is also dedicated to the discussion on which are the best parameters to run the module, and how different configurations can affect the result.

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First assessment of the interferometric capabilities of SAOCOM-1A: New results over the Domuyo Volcano, Neuquén Argentina

Cited by 12 publications

References 29 publications

Review of satellite radar interferometry for subsidence analysis

Review of satellite radar interferometry for subsidence analysis

Interferometric Assessment of SAOCOM-1 TOPSAR Data

On the Feasibility of Applying Orbital Corrections to Saocom-1 Data With Free Open Source Software (Foss) to Generate Digital Surface Models: A Case Study in Argentina

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