Preprint Article Version 1 This version is not peer-reviewed

How Well Can Spaceborne Digital Elevation Models Represent a Man-Made Structure: A Runway Case Study

Version 1 : Received: 31 July 2019 / Approved: 2 August 2019 / Online: 2 August 2019 (09:01:43 CEST)

A peer-reviewed article of this Preprint also exists.

Becek, K.; Akgül, V.; Inyurt, S.; Mekik, Ç.; Pochwatka, P. How Well can Spaceborne Digital Elevation Models Represent a Man-Made Structure: A Runway Case Study. Geosciences 2019, 9, 387. Becek, K.; Akgül, V.; Inyurt, S.; Mekik, Ç.; Pochwatka, P. How Well can Spaceborne Digital Elevation Models Represent a Man-Made Structure: A Runway Case Study. Geosciences 2019, 9, 387.

Journal reference: Geosciences 2019, 9, 387
DOI: 10.3390/geosciences9090387

Abstract

In this case study, an active runway of a civilian airport in Zonguldak, Turkey, is used to assess the suitability of spaceborne digital elevation models (DEMs) to model an anthropogenic structure. The tested DEMs include the ASTER, the AW3D30 m, the SRTM-1”, the SRTM-3”, the SRTM-X, the TanDEM-3”, and the WorldDEMTM. A photogrammetric high accuracy DEM was also available for the tests. As a reference dataset, a line leveling survey of the runway using a Leica Sprinter 150/150M instrument was performed. The selection of a runway as a testbed for this type of investigation is justified by its unique characteristics, including its flat surface, homogenous surface material, and availability for a ground survey. These characteristics are significant because DEMs over similar structures are free from environment- and target-induced error sources. The most accurate DEM is the WorldDEMTM followed by the SRTM-3” and TanDEM-3”, with vertical errors (LE90) equal to 1.291 m, 1.542 m, and 1.56 m, respectively. This investigation uses a method for identifying the vertical errors in DEMs that is known as the runway method.

Subject Areas

spaceborbe DEM; SRTM; TanDEM; AW3D30m; runway method; Zonguldak; suitability assessment

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