Monells Miralles, Daniel
Total activity: 14
Department
Department of Signal Theory and Communications
E-mail
daniel.monellsestudiant.upc.edu
Contact details
UPC directory Open in new window

Graphic summary
  • Show / hide key
  • Information


Scientific and technological production
  •  

1 to 14 of 14 results
  • Phase quality optimization in polarimetric differential SAR interferometry

     Iglesias Gonzalez, Ruben; Monells Miralles, Daniel; Fabregas Canovas, Francisco Javier; Mallorqui Franquet, Jordi Joan; Aguasca Sole, Alberto; López Martínez, Carlos
    IEEE transactions on geoscience and remote sensing
    Vol. 52, num. 5, p. 2875-2888
    DOI: 10.1109/TGRS.2013.2267095
    Date of publication: 2014-05
    Journal article

    Read the abstract Read the abstract View View Open in new window  Share Reference managers Reference managers Open in new window

    In this paper, a study of polarimetric optimization techniques in the frame of differential synthetic aperture radar (SAR) interferometry (DInSAR) is considered. Historically, DInSAR techniques have been limited to the single-polarimetric case, mainly due to the unavailability of fully polarimetric data. Lately, the launch of satellites with polarimetric capabilities, such as the Advanced Land Observing Satellite (ALOS), RADARSAT-2, or TerraSAR-X, allowed merging polarimetric and interferometric techniques to improve the pixels' phase quality and, thus, the density and the reliability of the final DInSAR results. The relationship between the polarimetrically optimized coherence or amplitude dispersion maps and the final DInSAR results is carefully analyzed, using both orbital and ground-based SAR fully polarimetric data. DInSAR processing using polarimetric optimization techniques in the pixel selection process is compared with the classical single-polarimetric approach, achieving up to a threefold increase of the number of pixel candidates in the coherence case and up to a factor of seven in the amplitude dispersion case.

  • Analysis of the evolution of ground movements in a low densely urban area by means of DInSAR technique

     Yerro Colom, Alba; Corominas Dulcet, Jordi; Monells Miralles, Daniel; Mallorqui Franquet, Jordi Joan
    Engineering geology
    Vol. 170, p. 52-65
    DOI: 10.1016/j.enggeo.2013.12.002
    Date of publication: 2014-02
    Journal article

    Read the abstract Read the abstract View View Open in new window  Share Reference managers Reference managers Open in new window

    This paper presents an application example of the use of the Differential Interferometry Synthetic Aperture Radar technique (DInSAR) for monitoring ground movements in a geologically complex area around the village of Suria (Ebro Basin, Catalonia, NE Spain), associated to underground mining activities and to the presence of a salt dome.; The analysis has been mostly performed in a rural environment affected by ground movements with different patterns, magnitudes and causes. A total of fifty SAR images recorded between 1995 and 2007 were processed to generate the interferograms. In order to study the non-linear trends or changes of the ground surface behavior, the DInSAR technique was applied in two sets of images.; The interferometric results, in the form of vertical displacement rate maps, were checked against conventional surveying and GPS measurements. The results present a significant discrepancy in some location due to the wrapping of the phase when both fast and significant deformations occur. In order to avoid the latter effect and improve the accuracy of the results, all SAR images were reprocessed using topographic leveling and GPS data of different monitored points.; To support the DInSAR interpretation, a detailed geological reconnaissance of the study area was carried out as well as an inventory of ground movement indicators. Four different patterns of ground movement have been identified: active shifting subsidence associated to the progression of the mining exploitation fronts; residual subsidence on abandoned galleries with a decreasing rate of closure; uplifting due to the intrusion of the salt dome; and sudden ground collapses (sinkholes) caused by the dissolution of soluble materials laying close to the ground surface. (C) 2013 Elsevier B.V. All rights reserved.

  • Phase quality optimisation techniques and limitations in polarimetric differential SAR interferometry

     Iglesias Gonzalez, Ruben; Monells Miralles, Daniel; Fabregas Canovas, Francisco Javier; Mallorqui Franquet, Jordi Joan; Aguasca Sole, Alberto; López Martínez, Carlos
    International Workshop on Science and Applications of SAR Polarimetry and Polarimetric Interferometry
    Presentation's date: 2013-01
    Presentation of work at congresses

    Read the abstract Read the abstract View View Open in new window  Share Reference managers Reference managers Open in new window

    In this paper, the application of polarimetric optimization techniques for Differential SAR Interferometry (DInSAR) applications is studied. The objective of the proposed techniques is to increase the number of temporal coherent scatterers, improving thus the robustness of the DInSAR algorithms exploiting the polarimetric capabilities of data. The relationship between optimum coherences or amplitude dispersion maps, depending on the pixels selection method used, and the final DInSAR results is analyzed, using both orbital and Ground-Based SAR fully-polarimetric data. Moreover, the main advantages and drawbacks of each optimization method will be analyzed, especially when polarimetric stability does not apply. With the optimization techniques presented up to a twofold increase of the pixel candidates in the coherence case and up to a factor of seven in the amplitude dispersion case may be reached.

  • SAR Multidimensional para la observación de la tierra: sistemas, procesado y aplicaciones

     Alonso Gonzalez, Alberto; Centolanza, Giuseppe; Monells Miralles, Daniel; López Martínez, Carlos; Mallorqui Franquet, Jordi Joan; Broquetas Ibars, Antoni; Fabregas Canovas, Francisco Javier; Makhoul Varona, Eduardo; Aguasca Sole, Alberto
    Competitive project

     Share

  • Landslide monitoring with spotlight TerraSAR-X DATA

     Iglesias Gonzalez, Ruben; Monells Miralles, Daniel; Centolanza, Giuseppe; Mallorqui Franquet, Jordi Joan; Fabregas Canovas, Francisco Javier; Aguasca Sole, Alberto
    IEEE International Geoscience and Remote Sensing Symposium
    p. 1298-1301
    DOI: 10.1109/IGARSS.2012.6351300
    Presentation's date: 2012-07
    Presentation of work at congresses

    Read the abstract Read the abstract View View Open in new window  Share Reference managers Reference managers Open in new window

    This paper aims to demonstrate that radar-based remote sensing techniques can be as effective as the conventional geotechnical ones for the detection and monitoring of well suited areas. Many of the high mountain landslides are vegetated areas that decorrelate faster at X-band. As in these scenarios the number of coherent scatterers is low and, in addition, the area of interest is usually small, the processing can be benefited of the usage of high-resolution data. This will maximize the chances of detecting persistent scatters coming from both natural targets and man-made structures. The high resolution Spotlight mode of TerraSAR-X is thus the perfect choice as it offers a fine resolution. On the other hand, its 11 days of revisit time and X-band carrier allows the monitoring of small variations in the landslide trend and deal with its variable dynamics.

  • A new approach to DInSAR pixel selection with spectral correlation along time between Sublooks

     Iglesias Gonzalez, Ruben; Monells Miralles, Daniel; Centolanza, Giuseppe; Mallorqui Franquet, Jordi Joan
    European Conference on Synthetic Aperture Radar
    p. 665-668
    Presentation's date: 2012-04
    Presentation of work at congresses

    View View Open in new window  Share Reference managers Reference managers Open in new window

  • A new approach to DInSAR pixel selection with a combined multi resolution selection method

     Centolanza, Giuseppe; Iglesias Gonzalez, Ruben; Monells Miralles, Daniel; Mallorqui Franquet, Jordi Joan
    European Conference on Synthetic Aperture Radar
    p. 485-488
    Presentation's date: 2012-04
    Presentation of work at congresses

    Read the abstract Read the abstract View View Open in new window  Share Reference managers Reference managers Open in new window

    In DInSAR processing it is possible to detect different kinds of targets at different resolutions. Point like scatters can be selected with high resolution selection methods, like amplitude dispersion. Distributed scatters can be selected with a coherence spatial window. The joint combination of two or more pixel selection methods can be useful to get a higher pixel density and identify, compare and evaluate distributed and point like scatters at the same time.

  • Application of high resolution spotlight TerraSAR-X data to landslide monitoring

     Iglesias Gonzalez, Ruben; Monells Miralles, Daniel; Centolanza, Giuseppe; Mallorqui Franquet, Jordi Joan; Fabregas Canovas, Francisco Javier; Aguasca Sole, Alberto; López Martínez, Carlos
    European Conference on Synthetic Aperture Radar
    p. 669-672
    Presentation's date: 2012-04
    Presentation of work at congresses

    Read the abstract Read the abstract View View Open in new window  Share Reference managers Reference managers Open in new window

    This paper seeks to demonstrate that radar-based remote sensing techniques, especially those based on orbital sensors, can be as effective as the conventional geotechnical and discrete GPS measurement ones for the detection and monitoring of well suited landslides. Unfortunately, deformation can only be retrieved for those landslides presenting a good orientation with respect the satellite orbit. In addition, many of the high mountain landslides are vegetated areas that decorrelate faster at X-band. As in these scenarios the number of persistent scatterers can be low and, at the same time, the area of interest is usually small, the processing can be benefited of the usage of high-resolution data that will maximize the chances of detecting persistent scatters coming from both natural targets and man-made structures. The high resolution Spotlight mode of TerraSAR-X is thus the perfect choice as it offers a fine resolution. In addition, its 11 days of revisit time and X-band carrier allows the monitoring of small variations in the landslide trend and deal with its variable dynamics. The landslide of study is ‘El Forn de Canillo’ (Andorra) where the deformation results will be compared and validated with those obtained with the deployed UPC’s Ground-Based (GB-SAR) X-band sensor.

  • Phase quality optimization in Orbital Differential SAR Interferometry with fully polarimetric data

     Monells Miralles, Daniel; Iglesias Gonzalez, Ruben; Mallorqui Franquet, Jordi Joan; Fabregas Canovas, Francisco Javier; López Martínez, Carlos
    IEEE International Geoscience and Remote Sensing Symposium
    p. 1864-1867
    DOI: 10.1109/IGARSS.2012.6351143
    Presentation's date: 2012-07
    Presentation of work at congresses

    Read the abstract Read the abstract View View Open in new window  Share Reference managers Reference managers Open in new window

    Orbital Differential SAR Interferometry (DInSAR) is a well-known technique to retrieve terrain deformation phenomena from wide areas with high resolution. Historically its application has been limited to single polarization SAR, mainly due to the unavailability of polarimetric data. Lately, the launch of several satellites with polarimetric capabilities, such as Radarsat-2 or TerraSAR-X, allows merging polarimetric and interferometric techniques in order to improve the results obtained in the DInSAR processing. This work will explore the existent analytical techniques in order to optimize the quality of the subsidence results. The dataset used contains 35 Fine Quad-Pol Radarsat-2 acquisitions over the city of Barcelona (Spain).

  • Application of polarimetric techniques in DinSAR processing for space borne subsidence monitoring

     Monells Miralles, Daniel; Mallorqui Franquet, Jordi Joan; Centolanza, Giuseppe; López Martínez, Carlos
    International Workshop on Science and Applications of SAR Polarimetry and Polarimetric Interferometry
    p. 1-19
    Presentation's date: 2011-01
    Presentation of work at congresses

    View View Open in new window  Share Reference managers Reference managers Open in new window

  • Access to the full text
    Differential SAR interferometry with orbital, airborne and ground-based sensors  Open access

     Mallorqui Franquet, Jordi Joan; Aguasca Sole, Alberto; Broquetas Ibars, Antoni; Fabregas Canovas, Francisco Javier; López Martínez, Carlos; Alonso Gonzalez, Alberto; Iglesias Gonzalez, Ruben; Centolanza, Giuseppe; Monells Miralles, Daniel
    SAR Technologies & Applications Congress
    Presentation's date: 2011-05-30
    Presentation of work at congresses

    Read the abstract Read the abstract Access to the full text Access to the full text Open in new window  Share Reference managers Reference managers Open in new window

    • Introduction to Differential Interferometry • Orbital Sensors: ERS, ENVISAT, RADARSAT2, TerraSAR-X. • Airborne Sensors: DLR’s E-SAR • Ground-Based Sensors: UPC’s GB-SAR • Conclusions

  • Analysis of subsidence using TerraSAR-X data Murcia case study

     Herrera, Gerardo; Tomás Jover, Roberto; Monells Miralles, Daniel; Centolanza, Giuseppe; Mallorqui Franquet, Jordi Joan; Vicente, Fernando; Navarro, Victor D.; López Sánchez, Juan Manuel; Sanabria, Margarita; Cano, Miguel; Mulas, J.
    Engineering geology
    Vol. 116, num. 3-4, p. 284-295
    DOI: 10.1016/j.enggeo.2010.09.010
    Date of publication: 2010-11-23
    Journal article

    View View Open in new window  Share Reference managers Reference managers Open in new window

  • Access to the full text
    Application of TerraSAR-X data to the monitoring of urban subsidence in the city of Murcia  Open access

     Monells Miralles, Daniel; Centolanza, Giuseppe; Mallorqui Franquet, Jordi Joan; Duque, Sergi; López-Dekker, Paco; Tomás, Roberto; Herrera, Gerardo; López Sánchez, Juan M.; Vicente, Fernando; Navarro Sánchez, Victor D.; Mulas, Joaquín
    IEEE International Geoscience and Remote Sensing Symposium
    p. 3506-3509
    DOI: 10.1109/IGARSS.2010.5652623
    Presentation's date: 2010-07
    Presentation of work at congresses

    Read the abstract Read the abstract Access to the full text Access to the full text Open in new window  Share Reference managers Reference managers Open in new window

    This paper presents an analysis of the performance of TerraSAR-X for subsidence monitoring in urban areas. The city of Murcia has been selected as a test-site due to its high deformation rate and the set of extensometers deployed along the city that provide validation data. The obtained results have been compared with those obtained from ERS/ENVISAT data belonging to the same period and validated with the in-situ measurements.

  • Access to the full text
    Performance of TerraSAR-X for urban subsidence monitoring: Murcia case study  Open access

     Monells Miralles, Daniel; Centolanza, Giuseppe; Mallorqui Franquet, Jordi Joan; Duque, Sergi; Tomás, Roberto; Lopez Sanchez, Juan M.; Vicente, Fernando; Herrera, Geraldo; Mulas, Joaquín
    European Conference on Synthetic Aperture Radar
    p. 1130-1133
    Presentation's date: 2010-06
    Presentation of work at congresses

    Read the abstract Read the abstract Access to the full text Access to the full text Open in new window  Share Reference managers Reference managers Open in new window

    This paper presents an analysis of the performance of TerraSAR-X for subsidence monitoring in urban areas. The city of Murcia has been selected as a test-site due to its high deformation rate and the set of extensometers deployed along the city that provide validation data. The obtained results have been compared with those obtained from ERS/ENVISAT data belonging to the same period and validated with the in-situ measurements.