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- Özer, I.E. (author), van Leijen, F.J. (author), van Damme, M. (author), Jonkman, Sebastiaan N. (author), Hanssen, R.F. (author) abstract 2017
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- te Brake, Bram (author), Samiei Esfahany, S. (author), Hanssen, R.F. (author) abstract 2017
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- van Leijen, F.J. (author), van der Marel, H. (author), Samiei Esfahany, S. (author), Hanssen, R.F. (author) abstract 2017
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- Vossepoel, F.C. (author), Beers, Karlijn (author), Hanssen, R.F. (author), Voskov, D.V. (author) other 2017
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Mahapatra, P.S. (author), van der Marel, H. (author), van Leijen, F.J. (author), Samiei Esfahany, S. (author), Klees, R. (author), Hanssen, R.F. (author)Deformation estimates from Interferometric Synthetic<br/>Aperture Radar (InSAR) are relative: they form a ‘free’<br/>network referred to an arbitrary datum, e.g. by assuming a reference<br/>point in the image to be stable. However, some applications<br/>require ‘absolute’ InSAR estimates, i.e. expressed in<br/>a well-defined terrestrial...journal article 2017
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Vandebroek, Elena (author), Lindenbergh, R.C. (author), van Leijen, F.J. (author), de Schipper, M.A. (author), de Vries, S. (author), Hanssen, R.F. (author)This paper presents a semi-automated approach to detecting coastal shoreline change with high spatial- and temporal-resolution using X-band synthetic aperture radar (SAR) data. The method was applied at the Sand Motor, a “mega-scale” beach nourishment project in the Netherlands. Natural processes, like waves, wind, and tides, gradually...journal article 2017
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Dheenathayalan, P. (author), Caro Cuenca, M. (author), Hoogeboom, P. (author), Hanssen, R.F. (author)In recent years, synthetic aperture radar interferometry has become a recognized geodetic tool for observing ground motion. For monitoring areas with low density of coherent targets, artificial corner reflectors (CRs) are usually introduced. The required size of a reflector depends on radar wavelength and resolution and on the required...journal article 2017
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- Chang, L. (author), Ku, Ou (author), Hanssen, R.F. (author) abstract 2017
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- Samiei Esfahany, S. (author), López-Dekker, Paco (author), Hanssen, R.F. (author) abstract 2017
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Samiei Esfahany, S. (author), Martins, Joana E. (author), van Leijen, F.J. (author), Hanssen, R.F. (author)In recent years, new algorithms have been proposed to retrieve maximum available information in synthetic aperture radar (SAR) interferometric stacks with focus on distributed scatterers. The key step in these algorithms is to optimally estimate single-master (SM) wrapped phases for each pixel from all possible interferometric combinations,...journal article 2016
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Dheenathayalan, P. (author), Small, D. (author), Schubert, A. (author), Hanssen, R.F. (author)Remote sensing radar satellites cover wide areas and provide spatially dense measurements, with millions of scatterers. Knowledge of the precise position of each radar scatterer is essential to identify the corresponding object and interpret the estimated deformation. The absolute position accuracy of synthetic aperture radar (SAR) scatterers in...journal article 2016
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Zhu, Xiao Xiang (author), Montazeri, Sina (author), Gisinger, Christoph (author), Hanssen, R.F. (author), Bamler, Richard (author)In this paper, we propose a framework referred to as 'geodetic synthetic aperture radar (SAR) tomography' that fuses the SAR imaging geodesy and tomographic SAR inversion (TomoSAR) approaches to obtain absolute 3-D positions of a large amount of natural scatterers. The methodology is applied on four very high resolution TerraSAR-X spotlight...journal article 2016
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Graniczny, M. (author), Cyziene, J. (author), van Leijen, F.J. (author), Minkevicius, W. (author), Mikulenas, V. (author), Satkunas, J. (author), Przylucka, M. (author), Kowalski, Z. (author), Uscinowicz, S. (author), Jeglinski, W. (author), Hanssen, R.F. (author)The article contains results obtained from realization of the Polish and Lithuanian Baltic case study within the EU – FP 7 SubCoast project, which one of the primary aims was analysis of vertical ground movements, potentially causing geohazards in the coastal areas. To reach this goal Interferometric Synthetic Aperture Radar (InSAR) data were...journal article 2015
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Chang, L. (author), Hanssen, R.F. (author)Monitoring the kinematic behavior of enormous amounts of points and objects anywhere on Earth is now feasible on a weekly basis using radar interferometry from Earth-orbiting satellites. An increasing number of satellite missions are capable of delivering data that can be used to monitor geophysical processes, mining and construction activities,...journal article 2015
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- Hanssen, R.F. (author) patent 2015
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Root, B.C. (author), Hanssen, R.F. (author), Vermeersen, L.L.A. (author), Munnik, M.E. (author), Vlijm, Rozemarijn (author)In November 1934, Den Helder, The Netherlands, the start of a remarkable voyage commenced. The Hr. Ms.K-XVIII, a Dutch submarine, was about to set sail to Soerabaya, Indonesia. Onboard was a Dutch professor, Felix Andries Vening Meinesz. He was able to measure the Earth’s gravity field with similar precision as on land for the first time in...abstract 2015
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Terwel, K.C. (author), Hanssen, R.F. (author), Waning, H (author)Radar interferometry is a technique which can observe the earth’s surface during day and night time. It makes uses of thousands of pulses per second that are transmitted by satellites and reflected by the surface of, for instance, structures. By analyzing the data it is possible to measure displacements of the surface within millimeter precision...conference paper 2015
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Fuhrmann, T. (author), Cuenca, M. Caro (author), Knöpfler, A. (author), van Leijen, F.J. (author), Mayer, M. (author), Westerhaus, M. (author), Hanssen, R.F. (author), Heck, B (author)The three geodetic techniques InSAR, levelling and GNSS are complementary w.r.t. (i) the sensitivity to horizontal and vertical displacement components, (ii) the spatial and temporal resolution of the measurements and (iii) the accuracy of the resulting displacements. We present a strategy to robustly combine the displacement estimates of the...conference paper 2015
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Ruiz-Armenteros, Antonio M. (author), Delgado, J. Manuel (author), Sousa, Joaquim J. (author), Hanssen, R.F. (author), Caro, Miguel (author), Gil, Antonio J. (author), Galindo-Zaldivar, Jesús (author), Sanz de Galdeano, Carlos (author)The Betic-Rif cordilleras are build-up in the western Mediterranean by the deformations related to the Eurasian-African plate boundary. The recent NW-SE convergence produces the simultaneous development of large folds and faults in the central part of the Internal Zones of the Betic Cordilleras, which continues active up to Present. The uplift...conference paper 2015
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Sousa, J.J. (author), Ruiz, A.M. (author), Hooper, A.J. (author), Hanssen, R.F. (author), Perski, Z. (author), Bastos, L.C. (author), Gil, A.J. (author), Galindo-Zaldivar, J. (author), Sanz de Galdeano, C. (author), Alfaro, P. (author), Garrido, M.S. (author), Armenteros, J.A. (author), Gimenez, E. (author), Aviles, M. (author)The quantification of low rate active tectonic structures is a major target of geodetic and geological studies to improve the knowledge of seismic hazards. The central Betic Cordillera (southern Spain) is affected by moderately active tectonic structures and seismicity. Part of this seismic activity is produced by several NW-SE normal faults...journal article 2014