Pinheiro, Muriel and Reigber, Andreas and Scheiber, Rolf and Prats, Pau and Moreira, Alberto (2018) Generation of Highly Accurate DEMs Over Flat Areas by Means of Dual-Frequency and Dual-Baseline Airborne SAR Interferometry. IEEE Transactions on Geoscience and Remote Sensing, 4361 -4390. IEEE - Institute of Electrical and Electronics Engineers. doi: 10.1109/tgrs.2018.2817122. ISSN 0196-2892.
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Abstract
In this paper, a dual-frequency and dual-baseline (DFDB) processing framework for the extraction of high precision terrain information from airborne interferometric synthetic aperture radar (SAR) data is presented. Specifically, we propose the use of two single-pass data sets acquired simultaneously in two different frequency bands and two large baseline repeat-pass data sets also acquired simultaneously in two frequency bands. The configuration profits from the stability of the single-pass derived elevation maps in relation to spatially correlated artifacts as well as from the increased sensitivity associated with large-baseline acquisitions. Moreover, the dualfrequency nature of the data set enables the tackling of the phase unwrapping issue, promoting the retrieval of unambiguous measurements. Several algorithms for the interferometric processing of the DFDB airborne data set are proposed, including the outline of multichannel phase calibration and unwrapping error correction strategies and approaches to remove spatially correlated artifacts and extract the common underlying topography. Elevation models generated from a DFDB data set acquired with the airborne F-SAR sensor over tidal flats in northern Germany are presented, and comparisons with an airborne laser scanner reference show errors with a standard deviation of around 14 cm and a mean absolute deviation of less than 10 cm.
Item URL in elib: | https://elib.dlr.de/120143/ | ||||||||||||||||||||||||
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Document Type: | Article | ||||||||||||||||||||||||
Title: | Generation of Highly Accurate DEMs Over Flat Areas by Means of Dual-Frequency and Dual-Baseline Airborne SAR Interferometry | ||||||||||||||||||||||||
Authors: |
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Date: | April 2018 | ||||||||||||||||||||||||
Journal or Publication Title: | IEEE Transactions on Geoscience and Remote Sensing | ||||||||||||||||||||||||
Refereed publication: | Yes | ||||||||||||||||||||||||
Open Access: | Yes | ||||||||||||||||||||||||
Gold Open Access: | No | ||||||||||||||||||||||||
In SCOPUS: | Yes | ||||||||||||||||||||||||
In ISI Web of Science: | Yes | ||||||||||||||||||||||||
DOI: | 10.1109/tgrs.2018.2817122 | ||||||||||||||||||||||||
Page Range: | 4361 -4390 | ||||||||||||||||||||||||
Publisher: | IEEE - Institute of Electrical and Electronics Engineers | ||||||||||||||||||||||||
ISSN: | 0196-2892 | ||||||||||||||||||||||||
Status: | Published | ||||||||||||||||||||||||
Keywords: | Digital elevation model (DEM), dual frequency, repeat-pass interferometry, SAR interferometry (InSAR) | ||||||||||||||||||||||||
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 - Aircraft SAR | ||||||||||||||||||||||||
Location: | Oberpfaffenhofen | ||||||||||||||||||||||||
Institutes and Institutions: | Microwaves and Radar Institute > SAR Technology | ||||||||||||||||||||||||
Deposited By: | Muriel Aline, Pinheiro | ||||||||||||||||||||||||
Deposited On: | 27 Jun 2018 11:15 | ||||||||||||||||||||||||
Last Modified: | 14 Jun 2023 16:20 |
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