The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
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Articles | Volume XLII-2/W13
Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLII-2/W13, 61–66, 2019
https://doi.org/10.5194/isprs-archives-XLII-2-W13-61-2019
Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLII-2/W13, 61–66, 2019
https://doi.org/10.5194/isprs-archives-XLII-2-W13-61-2019

  04 Jun 2019

04 Jun 2019

PRECISE AERIAL IMAGE ORIENTATION USING SAR GROUND CONTROL POINTS FOR MAPPING OF URBAN LANDMARKS

F. Kurz, T. Krauß, H. Runge, D. Rosenbaum, and P. d’Angelo F. Kurz et al.
  • DLR – German Aerospace Center, 82234 Oberpfaffenhofen, Germany

Keywords: Aerial Imagery, Georeferencing Accuracy, Radar-GCPs, Geodetic SAR Processing, Bundle Adjustment, Automatic GCP detection

Abstract. Highly precise ground control points, which are globally available, can be derived from the SAR satellite TerraSAR-X. This opens up many new applications like for example the precise aerial image orientation. In this paper, we propose a method for precise aerial image orientation using spaceborne geodetic Synthetic Aperture Radar Ground Control Points (SAR-GCPs). The precisely oriented aerial imagery can then be used e.g. for mapping of urban landmarks, which support the ego-positioning of autonomous cars. The method for precise image orientation was validated based on two aerial image data sets. SAR-GCPs were measured in images, then the image orientation has been improved by a bundle-adjustment. Results based on check points show, that the accuracy of the image orientation is better than 5 cm in X and Y coordinates.