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Verification of digital elevation models from MOMS-2P data

Müller, Rupert and Lehner, Manfred and Müller, Rainer (2001) Verification of digital elevation models from MOMS-2P data. In: High Resolution Mapping from Space 2001, CD-ROM, pp. 142-152. Universität Hannover (Lehrstuhl für Photogrammetrie und GeoInformation (IPI)). "High Resolution Mapping from Space 2001". Hannover, 19.-21.9.2001.

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Abstract

The MOMS-2P sensor (Modular Optoelectronic Multispectral Stereo Scanner) is a German stereo camera mounted on the PRIRODA module of the Russian space station MIR. Its main new feature was the along-track three-fold stereo capability. It delivered approx. 65 million km2 of high quality and high resolution (approx. 18m ground resolution) imagery from 1996 to 1999, which is still subject of ongoing image processing to generate digital elevation models and orthoimages throughout the entire world. The three-fold along-track stereo principle and multispectral capabilities of the MOMS-2P sensor were highly advantageous for digital elevation model (DEM) generation compared to other satellite systems in orbit. The majority of all data takes of MOMS-2P were imaged in Mode D, which is a combination of the two inclined stereo and two nadir looking multispectral channels (blue and near-infrared) with a swath width of approx. 100km and a ground resolution of 18m. The data of this mode is well applicable for generating digital elevation models and using the multispectral imagery for creating orthoimages, landuse-classification and further evaluations. This paper describes the latest processing experience in generating high quality digital surface models and orthoimages from MOMS-2P stereo data at DLR. The steps of the processing chain are shortly explained. It is shown that self-calibration via bundle block adjustment is necessary. The quality of the attitude and position data provided by the onboard gyros and the GPS receiver is discussed. It is demonstrated that the highly accurate attitude data is essential for generating precise digital elevation models. The results of an accuracy analysis using digital surface models (DSMs) produced from Mode D image and orientation data from data takes which cover parts of South Germany. The DSMs are checked against a reference DEM with a mesh size of 25m. For a more detailed height accuracy analysis, classification results using the multispectral part of the Mode D imagery allow a discrimination between various landcover types

Document Type:Conference or Workshop Item (Paper)
Additional Information: LIDO-Berichtsjahr=2001,
Title:Verification of digital elevation models from MOMS-2P data
Authors:
AuthorsInstitution or Email of Authors
Müller, RupertUNSPECIFIED
Lehner, ManfredUNSPECIFIED
Müller, RainerUNSPECIFIED
Date:2001
Journal or Publication Title:High Resolution Mapping from Space 2001
Volume:CD-ROM
Page Range:pp. 142-152
Editors:
EditorsEmail
Universität Hannover (Lehrstuhl für Photogrammetrie und GeoInformation (IPI)), UNSPECIFIED
Publisher:Universität Hannover (Lehrstuhl für Photogrammetrie und GeoInformation (IPI))
Series Name:ISPRS Proceedings
Status:Published
Keywords:Digital elevation models, digital surface models, MOMS-2P; stereo, image matching, multispectral, accuracy, orthoimages
Event Title:"High Resolution Mapping from Space 2001". Hannover, 19.-21.9.2001
Organizer:ISPRS (Working Groups I/2, I/5 und IV/7), Universität Hannover, Lehrstuhl für Photogrammetrie und GeoInformation (IPI)
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EO - Erdbeobachtung
DLR - Research area:Space
DLR - Program:W EO - Erdbeobachtung
DLR - Research theme (Project):UNSPECIFIED
Location: Oberpfaffenhofen
Institutes and Institutions:Remote Sensing Technology Institute
Deposited By: elib DLR-Beauftragter
Deposited On:31 Jan 2006
Last Modified:06 Jan 2010 22:04

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