River Dike Deformation Measurement With Airborne SAR

Groot, J.S.

doi:10.1109/lgrs.2004.824743

Cited by 2 publications

(2 citation statements)

References 6 publications

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“…In 2004, some controlled experiments with three corner reflectors measured at both L-and C-bands were presented in [73], obtaining absolute measurements with an accuracy better than 1 cm. Also in 2004, the deformation of a dike measured at C-band was reported in [74]. In 2008, a time series at X-band was presented in [75], where the motion of a corner reflector was retrieved, while in the same year, a time series at L-band was analyzed in [76], where several differential effects could be observed over agricultural fields.…”

Section: Dinsar Applicationsmentioning

confidence: 99%

Very-High-Resolution Airborne Synthetic Aperture Radar Imaging: Signal Processing and Applications

et al. 2013

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During the last decade, synthetic aperture radar (SAR) became an indispensable source of information in Earth observation. This has been possible mainly due to the current trend toward higher spatial resolution and novel imaging modes. A major driver for this development has been and still is the airborne SAR technology, which is usually ahead of the capabilities of spaceborne sensors by several years. Today's airborne sensors are capable of delivering high-quality SAR data with decimeter resolution and allow the development of novel approaches in data analysis and information extraction from SAR. In this paper, a review about the abilities and needs of today's very high-resolution airborne SAR sensors is given, based on and summarizing the longtime experience of the German Aerospace Center (DLR) with airborne SAR technology and its applications. A description of the specific requirements of high-resolution airborne data processing is presented, followed by an extensive overview of emerging applications of high-resolution SAR. In many cases, information extraction from high-resolution airborne SAR imagery has achieved a mature level, turning SAR technology more and more into an operational tool. Such abilities, which are today mostly limited to airborne SAR, might become typical in the next generation of spaceborne SAR missions.

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Section: Dinsar Applicationsmentioning

confidence: 99%

Very-High-Resolution Airborne Synthetic Aperture Radar Imaging: Signal Processing and Applications

et al. 2013

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“…In this case, relative and absolute measurements were shown, where the latter had an accuracy that was better than 1 cm. In 2004, Groot [30] reported the deformation of a dike after calibrating using the phase of several corner reflectors deployed in the scene. In addition, in 2004, Fornaro et al [31] presented an X-band differential interferogram, where the images had been acquired with a temporal baseline of only a few minutes, so that no displacements were expected.…”

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confidence: 99%

Estimation of the Temporal Evolution of the Deformation Using Airborne Differential SAR Interferometry

Prats

Mallorquí

Reigber³

et al. 2008

IEEE Trans. Geosci. Remote Sensing

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Abstract-This paper presents airborne differential synthetic aperture radar (SAR) interferometry results using a stack of 14 images, which were acquired by the Experimental SAR system of the German Aerospace Center (DLR) during a time span of 2.5 h. An advanced differential technique is used to retrieve the error in the digital elevation model and the temporal evolution of the deformation for every coherent pixel in the image. The two main limitations in airborne SAR processing are analyzed, namely, the existence of residual motion errors (RMEs) (inaccuracies in the navigation system on the order of 1-5 cm) and the accommodation of the topography and the aperture dependence on motion errors during the processing. The coupling between them is also addressed, showing that the estimation of the differential RME, i.e., baseline error, can be biased when using techniques based on the coregistration between interferometric looks. The SAR focusing chain to process the data is also presented together with the modifications in the differential interferometry processor to deal with the remaining baseline error. The detected motion of a corner reflector and the measured deformation in several agricultural fields allows one to validate the proposed techniques.

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River Dike Deformation Measurement With Airborne SAR

Cited by 2 publications

References 6 publications

Very-High-Resolution Airborne Synthetic Aperture Radar Imaging: Signal Processing and Applications

Very-High-Resolution Airborne Synthetic Aperture Radar Imaging: Signal Processing and Applications

Estimation of the Temporal Evolution of the Deformation Using Airborne Differential SAR Interferometry

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