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Evaluating different water-land-boundary approximations to improve sar-derived digital elevation models

Schneider, B.; Wortmeyer, E.; Schmitz, S.; Thiele, A.; Havel, P.; Dirks, H.; Paparoditis N., Lafarge F. Yang M. Y. Hinz S. Feitosa R. Q. Weinmann M. Jutzi B., Mallet C. [Hrsg.]


The coastline of the German Wadden Sea is constantly subjected to the tides and the tidal-induced environmental changes like erosion and accumulation of sediments need to be monitored constantly. This task requires digital elevation models (DEMs), which are derived from remote sensing data. To model those DEMs, a separation of data collected over landmasses and water bodies is required. In the GeoWAM project the potential of airborne SAR-data (F-SAR) is investigated for monitoring purposes in the Wadden Sea. As part of the project, this paper focuses on the suitability of F-SAR data regarding the derivation of water-land-boundaries (WLBs). Therefore, water-land-boundaries based on independent data sets are compared and evaluated. Analyzed data sets include data collected via F-SAR, airborne laserscanning (ALS), on site GNSS measured WLB points and sea-level data from two acoustic gauges. The algorithms were tested on a study site on Spiekeroog island. Our results show, that the accuracies of the derived WLBs mostly depend on the on-site topography and sediments. The spatial deviation between the reference data and the approximated WLBs is mostly less than 2 m horizontally and 0.15 m vertically. ... mehr

Verlagsausgabe §
DOI: 10.5445/IR/1000140393
Veröffentlicht am 29.11.2021
DOI: 10.5194/isprs-archives-XLIII-B1-2021-51-2021
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Photogrammetrie und Fernerkundung (IPF)
Publikationstyp Proceedingsbeitrag
Publikationsjahr 2021
Sprache Englisch
Identifikator ISSN: 1682-1750
KITopen-ID: 1000140393
Erschienen in Volume XLIII-B1-2021, XXIV ISPRS Congress Imaging today, foreseeing tomorrow, Commission I: 2021 edition, 5–9 July 2021. Ed.: N. Paparoditis
Veranstaltung 24th ISPRS Congress (2021), Online, 05.07.2021 – 09.07.2021
Verlag International Society for Photogrammetry and Remote Sensing (ISPRS)
Seiten 51-56
Serie The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences ; 43
Nachgewiesen in Scopus
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