Cong, Xiaoying and Balss, Ulrich and Eineder, Michael and Fritz, Thomas (2012) Imaging Geodesy—Centimeter-Level Ranging Accuracy With TerraSAR-X: An Update. IEEE Geoscience and Remote Sensing Letters, 9 (5), pp. 948-952. IEEE - Institute of Electrical and Electronics Engineers. doi: [10.1109/LGRS.2012.2187042]. ISSN 1545-598X.
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Official URL: http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=6170871&isnumber=6205680
Abstract
In this letter, we report on two major improvements with respect to the results presented in our recent paper on imaging geodesy: the atmospheric delay estimation using numerical weather model data and the continental drift adjustment from different geodetic coordinate systems. First, we demonstrate that the GPS-based zenith delay estimates used in our recent paper to correct synthetic aperture radar (SAR) data can be replaced by estimates calculated from numerical weather model data. This leads to a much wider applicability of our approach and even improves the accuracy from 3.8 cm to 3.2 cm. Second, for measuring the absolute position within the SAR image, the coordinate system used has to be carefully chosen, otherwise continental drift affects the results. We show that correct consideration of the reference frames eliminates residual offsets by up to 3.1 cm.
Item URL in elib: | https://elib.dlr.de/76333/ | |||||||||||||||
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Document Type: | Article | |||||||||||||||
Title: | Imaging Geodesy—Centimeter-Level Ranging Accuracy With TerraSAR-X: An Update | |||||||||||||||
Authors: |
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Date: | September 2012 | |||||||||||||||
Journal or Publication Title: | IEEE Geoscience and Remote Sensing Letters | |||||||||||||||
Refereed publication: | Yes | |||||||||||||||
Open Access: | No | |||||||||||||||
Gold Open Access: | No | |||||||||||||||
In SCOPUS: | Yes | |||||||||||||||
In ISI Web of Science: | Yes | |||||||||||||||
Volume: | 9 | |||||||||||||||
DOI : | [10.1109/LGRS.2012.2187042] | |||||||||||||||
Page Range: | pp. 948-952 | |||||||||||||||
Publisher: | IEEE - Institute of Electrical and Electronics Engineers | |||||||||||||||
ISSN: | 1545-598X | |||||||||||||||
Status: | Published | |||||||||||||||
Keywords: | Electromagnetic refraction , TerraSAR-X (TS-X) , geodesy , pixel localization accuracy , synthetic aperture radar (SAR) , tropospheric delay | |||||||||||||||
HGF - Research field: | Aeronautics, Space and Transport | |||||||||||||||
HGF - Program: | Space | |||||||||||||||
HGF - Program Themes: | Earth Observation | |||||||||||||||
DLR - Research area: | Raumfahrt | |||||||||||||||
DLR - Program: | R EO - Earth Observation | |||||||||||||||
DLR - Research theme (Project): | R - Vorhaben hochauflösende Fernerkundungsverfahren (old) | |||||||||||||||
Location: | Oberpfaffenhofen | |||||||||||||||
Institutes and Institutions: | Remote Sensing Technology Institute > SAR Signal Processing | |||||||||||||||
Deposited By: | Cong, Xiao Ying | |||||||||||||||
Deposited On: | 12 Jul 2012 10:46 | |||||||||||||||
Last Modified: | 08 Mar 2018 18:30 |
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