Generation of high precision DEMs of the Wadden Sea with airborne interferometric SAR

Wimmer, Christian; Siegmund, Robert; Schwäbisch, M.; Moreira, J.

doi:10.1109/36.868881

Cited by 68 publications

(38 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Airborne InSAR allows an accuracy of a few centimeters at high spatial resolution (Wimmer et al 2000) while its costs for mapping large regions are relatively high.…”

Section: Dems From Insar Techniquesmentioning

confidence: 99%

See 1 more Smart Citation

Topography and morphodynamics in the German Bight using SAR and optical remote sensing data

2005

View full text Add to dashboard Cite

Morphological changes in coastal areas, especially in river estuaries, are of high interest in many parts of the world. Satellite data from both optical and radar sensors can help to monitor and investigate these changes. Data from both kinds of sensors being available for up to 30 years now, allow examinations over large timescales, while high resolution sensors developed within the last decade allow increased accuracy. So the creation of digital elevation models (DEMs) of, for example, the wadden sea from a series of satellite images is already possible. ENVISAT, successfully launched on March 1, 2002, continues the line of higher resolution synthetic aperture radar (SAR) imaging sensors with its ASAR instrument and now also allows several polarization modes for better separation of land and water areas. This article gives an overview of sensors and algorithms for waterline determination as well as several applications. Both optical and SAR images are considered. Applications include morphodynamic monitoring studies and DEM generation.

show abstract

“…Airborne InSAR allows an accuracy of a few centimeters at high spatial resolution (Wimmer et al 2000) while its costs for mapping large regions are relatively high.…”

Section: Dems From Insar Techniquesmentioning

confidence: 99%

“…In order to monitor morphodynamic changes of bottom topography, different methods for DEM generation have already been analyzed (Hoja 2000;Niedermeier et al 2000;Wimmer et al 2000). One approach is the socalled waterline extraction by image analysis.…”

Section: Waterline Determinationmentioning

confidence: 99%

Topography and morphodynamics in the German Bight using SAR and optical remote sensing data

2005

View full text Add to dashboard Cite

show abstract

“…In our case, the antenna PhC positions were accurately measured in anechoic chamber [32], with an accuracy on the order of 0.1 mm [33]. The lever arms were measured just before the beginning of the flight mission by using the laser ray of an Electronic Distance Meter (EDM) integrated within a Total Station Theodolite (TST), which guarantees an accuracy of 0.5 mm [33].…”

Section: Appendix Amentioning

confidence: 99%

“…The lever arms were measured just before the beginning of the flight mission by using the laser ray of an Electronic Distance Meter (EDM) integrated within a Total Station Theodolite (TST), which guarantees an accuracy of 0.5 mm [33]. Finally, the NU of the InSAeS4 system consists of modern embedded GNSS-IMU equipment [19].…”

Section: Appendix Amentioning

confidence: 99%

Sea State Observation through a Three-Antenna Hybrid XT/AT InSAR Configuration: A Preliminary Study Based on the InSAeS4 Airborne System

et al. 2017

View full text Add to dashboard Cite

Abstract:In this work, we investigate the sea surface monitoring capabilities of a Synthetic Aperture Radar (SAR) system equipped with a three-antenna hybrid Across Track (XT)/Along Track (AT) inteferometric configuration. To do this, we focus on the X-Band airborne InSAeS4 SAR system. Moreover, we propose a simple but effective methodology that allows simultaneous retrieval of the sea surface height and velocity by means of a straightforward, easy-to-implement, linear inversion procedure, which is very general and can be implemented with any system equipped with a three-antenna hybrid XT/AT Interferometric SAR (InSAR) configuration. In our case, we present an experiment carried out in January 2013 in South Italy over the coastline stretch of the Campania region including the Volturno River outlet. In this regard, we highlight that in situ measurements of the retrieved sea surface height and velocity at the time of the airborne mission are unfortunately not available. Notwithstanding, the obtained results show some interesting evidence that the estimated quantities are physically sound. This, on the one side, provides a preliminary validation of the effectiveness of the overall presented methodology and, on the other side, highlights the potentialities of the three-antenna hybrid XT/AT InSAR configuration of the InSAeS4 system for sea state monitoring.

show abstract

“…However, tidal flats have been considered economically unimportant areas in the past, and knowledge of their past topography is limited by the poor accessibility and significant temporal dynamics of the tidal flats, technical and financial limitations and indifference. It is impossible to retrieve the tidal flat topography of the past few years or even decades by using ground surveys, ship-based echo-sounding, airborne stereo-photogrammetry, airborne light detection and ranging (LiDAR) or airborne interferometric synthetic aperture radar (INSAR) [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Quantitative Analysis of the Waterline Method for Topographical Mapping of Tidal Flats: A Case Study in the Dongsha Sandbank, China

Liu

Zhou

et al. 2013

Remote Sensing

View full text Add to dashboard Cite

Abstract:Although the topography of tidal flats is important for understanding their evolution, the spatial and temporal sampling frequency of such data remains limited. The waterline method has the potential to retrieve past tidal flat topography by utilizing large archives of satellite images. This study performs a quantitative analysis of the relationship between the accuracy of tidal flat digital elevation models (DEMs) that are based on the waterline method and the factors that influence the DEMs. The three major conclusions of the study are as follows: (1) the coverage rate of the waterline points and the number of satellite images used to create the DEM are highly linearly correlated with the error of the resultant DEMs, and the former is more significant in indicating the accuracy of the resultant DEMs than the latter; (2) both the area and the slope of the tidal flats are linearly correlated with the error of the resultant DEMs; and (3) the availability analysis of the archived satellite images indicates that the waterline method can retrieve tidal flat terrains from the past forty years. The upper limit of the temporal resolution of the tidal flat DEM can be refined to within one year since 1993, to half a year since 2004 and to three months since 2009.

show abstract

Generation of high precision DEMs of the Wadden Sea with airborne interferometric SAR

Cited by 68 publications

References 13 publications

Topography and morphodynamics in the German Bight using SAR and optical remote sensing data

Topography and morphodynamics in the German Bight using SAR and optical remote sensing data

Sea State Observation through a Three-Antenna Hybrid XT/AT InSAR Configuration: A Preliminary Study Based on the InSAeS4 Airborne System

Quantitative Analysis of the Waterline Method for Topographical Mapping of Tidal Flats: A Case Study in the Dongsha Sandbank, China

Contact Info

Product

Resources

About