Analysis and correction of systematic height model errors

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dc.identifier.uri Jacobsen, Karsten 2016-11-21T07:54:39Z 2016-11-21T07:54:39Z 2016
dc.identifier.citation Jacobsen, K.: Analysis and correction of systematic height model errors. In: International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences - ISPRS Archives 41 (2016), S. 333-339. DOI:
dc.description.abstract The geometry of digital height models (DHM) determined with optical satellite stereo combinations depends upon the image orientation, influenced by the satellite camera, the system calibration and attitude registration. As standard these days the image orientation is available in form of rational polynomial coefficients (RPC). Usually a bias correction of the RPC based on ground control points is required. In most cases the bias correction requires affine transformation, sometimes only shifts, in image or object space. For some satellites and some cases, as caused by small base length, such an image orientation does not lead to the possible accuracy of height models. As reported e.g. by Yong-hua et al. 2015 and Zhang et al. 2015, especially the Chinese stereo satellite ZiYuan-3 (ZY-3) has a limited calibration accuracy and just an attitude recording of 4 Hz which may not be satisfying. Zhang et al. 2015 tried to improve the attitude based on the color sensor bands of ZY-3, but the color images are not always available as also detailed satellite orientation information. There is a tendency of systematic deformation at a Pléiades tri-stereo combination with small base length. The small base length enlarges small systematic errors to object space. But also in some other satellite stereo combinations systematic height model errors have been detected. The largest influence is the not satisfying leveling of height models, but also low frequency height deformations can be seen. A tilt of the DHM by theory can be eliminated by ground control points (GCP), but often the GCP accuracy and distribution is not optimal, not allowing a correct leveling of the height model. In addition a model deformation at GCP locations may lead to not optimal DHM leveling. Supported by reference height models better accuracy has been reached. As reference height model the Shuttle Radar Topography Mission (SRTM) digital surface model (DSM) or the new AW3D30 DSM, based on ALOS PRISM images, are satisfying. They allow the leveling and correction of low frequency height errors and lead to satisfying correction of the DSM based on optical satellite images. The potential of DHM generation, influence of systematic model deformation and possibilities of improvement has been investigated. eng
dc.language.iso eng
dc.publisher Göttingen : Copernicus GmbH
dc.relation.ispartof 23rd International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences Congress, ISPRS 2016, 12–19 July 2016, Prague, Czech Republic
dc.relation.ispartofseries International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences - ISPRS Archives 41 (2016)
dc.rights CC BY 3.0
dc.subject DSM/DTM eng
dc.subject Optical space images eng
dc.subject Orientation eng
dc.subject Satellite jitter eng
dc.subject Systematic error eng
dc.subject Aluminum eng
dc.subject Calibration eng
dc.subject Crystal orientation eng
dc.subject Deformation eng
dc.subject Errors eng
dc.subject Remote sensing eng
dc.subject Rock mechanics eng
dc.subject Satellites eng
dc.subject Tracking radar eng
dc.subject Affine transformations eng
dc.subject Digital surface models eng
dc.subject DSM/DTM eng
dc.subject Optical satellite images eng
dc.subject Orientation information eng
dc.subject.ddc 500 | Naturwissenschaften ger
dc.subject.ddc 520 | Astronomie, Kartographie ger
dc.title Analysis and correction of systematic height model errors
dc.type article
dc.type conferenceObject
dc.type Text
dc.relation.issn 1682-1750
dc.bibliographicCitation.volume 41
dc.bibliographicCitation.firstPage 333
dc.bibliographicCitation.lastPage 339
dc.description.version publishedVersion
tib.accessRights frei zug�nglich

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