Precise 2-D and 3-D Ground Target Localization With Terrasar-X

Balss, Ulrich; Gisinger, Christoph; Cong, Xiaoying; Eineder, Michael; Brcic, Ramon

doi:10.5194/isprsarchives-xl-1-w1-23-2013

Cited by 13 publications

(8 citation statements)

References 13 publications

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“…Moreover, the substantially improved localization accuracy renders new SAR applications possible, e.g. in [20] we discussed the applicability of stereo SAR.…”

Section: Discussionmentioning

confidence: 99%

High resolution geodetic earth observation with TerraSAR-X: Correction schemes and validation

Balss

Gisinger

Cong

et al. 2013

2013 IEEE International Geoscience and Remote Sensing Symposium - IGARSS

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Previous studies have shown the unprecedented absolute pixel localization accuracy of the German SAR (Synthetic Aperture Radar) satellites TerraSAR-X and TanDEM-X. Now, by thoroughly correcting all signal path delays and geodynamic effects like tides, loadings and plate movements, range accuracies of about 1 centimeter are demonstrated to be attainable. While Global Navigation Satellite System (GNSS) data provide local correction values for the atmospheric delays, correction values for the geodynamic effects are based on the IERS (International Earth Rotation and Reference Systems Service) conventions. Our recent measurements are based on a corner reflector with very precisely known ground position which we installed at Wettzell, Germany, close to the local GNSS reference stations. Further comparable high precision test sites in the world are in progress and shall prove the worldwide reproducibility of the achieved results.

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“…Moreover, the substantially improved localization accuracy renders new SAR applications possible, e.g. in [20] we discussed the applicability of stereo SAR.…”

Section: Discussionmentioning

confidence: 99%

High resolution geodetic earth observation with TerraSAR-X: Correction schemes and validation

Balss

Gisinger

Cong

et al. 2013

2013 IEEE International Geoscience and Remote Sensing Symposium - IGARSS

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“…Some improvements with respect to these issues can be expected in the near future as the monitoring system is currently being overhauled to be able to be used with the Sentine-1 constellation characterized by longer C-band wavelength and a short revisiting time of six days [65]. A possible complementary strategy to correctly detect these displacements could certainly be the so-called Imaging Geodesy (IG), exploiting the amplitude instead of (or jointly with) phase of the SAR data, as more powerful and accurate as higher resolution imagery is used [66][67][68][69][70][71].…”

Section: Discussionmentioning

confidence: 99%

Multi-Temporal X-Band Radar Interferometry Using Corner Reflectors: Application and Validation at the Corvara Landslide (Dolomites, Italy)

et al. 2017

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Abstract:From the wide range of methods available to landslide researchers and practitioners for monitoring ground displacements, remote sensing techniques have increased in popularity. Radar interferometry methods with their ability to record movements in the order of millimeters have been more frequently applied in recent years. Multi-temporal interferometry can assist in monitoring landslides on the regional and slope scale and thereby assist in assessing related hazards and risks. Our study focuses on the Corvara landslides in the Italian Alps, a complex earthflow with spatially varying displacement patterns. We used radar imagery provided by the COSMO-SkyMed constellation and carried out a validation of the derived time-series data with differential GPS data. Movement rates were assessed using the Permanent Scatterers based Multi-Temporal Interferometry applied to 16 artificial Corner Reflectors installed on the source, track and accumulation zones of the landslide. The overall movement trends were well covered by Permanent Scatterers based Multi-Temporal Interferometry, however, fast acceleration phases and movements along the satellite track could not be assessed with adequate accuracy due to intrinsic limitations of the technique. Overall, despite the intrinsic limitations, Multi-Temporal Interferometry proved to be a promising method to monitor landslides characterized by a linear and relatively slow movement rates.

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“…The first results on 3D localization of CRs by means of stereo SAR was reported in [99]. Although 3D positioning using multi-aspect TerraSAR-X images had been previously demonstrated in [100][101][102], the results in [99] were unique in the sense that the stereo processing was carried out on thoroughly calibrated range and azimuth timings. Gisinger et al demonstrated the applicability of the geodetic stereo SAR method not only on CRs but on opportunistic non-ideal scatterers such as PS in an urban area [82].…”

Section: Overview Of Advancesmentioning

confidence: 99%

A Review of Ten-Year Advances of Multi-Baseline SAR Interferometry Using TerraSAR-X Data

et al. 2018

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Since its launch in 2007, TerraSAR-X has continuously provided spaceborne synthetic aperture radar (SAR) images of our planet with unprecedented spatial resolution, geodetic, and geometric accuracy. This has brought life to the once inscrutable SAR images, which deterred many researchers. Thanks to merits like higher spatial resolution and more precise orbit control, we are now able to indicate individual buildings, even individual floors, to pinpoint targets within centimeter accuracy. As a result, multi-baseline SAR interferometric (InSAR) techniques are flourishing, from point target-based algorithms, to coherent stacking techniques, to absolute positioning of the former techniques. This article reviews the recent advances of multi-baseline InSAR techniques using TerraSAR-X images. Particular focus was put on our own development of persistent scatterer interferometry, SAR tomography, robust estimation in distributed scatterer interferometry and absolute positioning using geodetic InSAR. Furthermore, by introducing the applications associated with these techniques, such as 3D reconstruction and deformation monitoring, this article is also intended to give guidance to wider audiences who would like to resort to SAR data and related techniques for their applications.

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Precise 2-D and 3-D Ground Target Localization With Terrasar-X

Cited by 13 publications

References 13 publications

High resolution geodetic earth observation with TerraSAR-X: Correction schemes and validation

High resolution geodetic earth observation with TerraSAR-X: Correction schemes and validation

Multi-Temporal X-Band Radar Interferometry Using Corner Reflectors: Application and Validation at the Corvara Landslide (Dolomites, Italy)

A Review of Ten-Year Advances of Multi-Baseline SAR Interferometry Using TerraSAR-X Data

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