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Reconstruction of Coherent Pairs of Synthetic Aperture Radar Data Acquired in Interrupted Mode

Pinheiro, Muriel and Rodriguez-Cassola, Marc and Prats-Iraola, Pau and Reigber, Andreas and Krieger, Gerhard and Moreira, Alberto (2015) Reconstruction of Coherent Pairs of Synthetic Aperture Radar Data Acquired in Interrupted Mode. IEEE Transactions on Geoscience and Remote Sensing, 53 (4), pp. 1876-1893. IEEE - Institute of Electrical and Electronics Engineers. doi: 10.1109/TGRS.2014.2350255. ISSN 0196-2892.

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Abstract

A number of SAR systems might work in interrupted operation for different purposes. Examples are cooperative bistatic SAR systems with a synchronization link between transmitter and receiver, or multi-static systems operating in receive-only mode, among others. As a direct consequence, the acquired raw data contain missing echoes presented in a periodical or random pattern. Since the missing raw data introduce artifacts in the processed images, recovery methods have to be applied. Usually, spectral estimation-based interpolators can be used to recover data. Although such algorithms show good performance for point-like targets, their efficiency is decreased for distributed scatterers. In this paper we propose, for a coherent pair of SAR images, the use of the common information in one image to reconstruct the other and vice versa. The conditions required for the proper use of the approach are discussed and the method is verified using simulated data. One special case of study is the TanDEM-X mission, where the cooperative nature of the bistatic operation requires the periodic exchange of information between the satellites in order to gather information for calibration and synchronization creating a periodic missing data pattern in the raw data. For this case of study the reconstruction methods based on spectral estimation are analyzed and the proposed reconstruction using cross-information is validated.

Item URL in elib:https://elib.dlr.de/91215/
Document Type:Article
Title:Reconstruction of Coherent Pairs of Synthetic Aperture Radar Data Acquired in Interrupted Mode
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Pinheiro, MurielUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Rodriguez-Cassola, MarcUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Prats-Iraola, PauUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Reigber, AndreasUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Krieger, GerhardUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Moreira, AlbertoUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Date:4 April 2015
Journal or Publication Title:IEEE Transactions on Geoscience and Remote Sensing
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:53
DOI:10.1109/TGRS.2014.2350255
Page Range:pp. 1876-1893
Publisher:IEEE - Institute of Electrical and Electronics Engineers
ISSN:0196-2892
Status:Published
Keywords:Synthetic Aperture Radar (SAR), SAR interferometry, bistatic SAR, reconstruction of missing data, spectral estimators, cross-reconstruction
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 - Security-relevant Earth Observation
Location: Oberpfaffenhofen
Institutes and Institutions:Microwaves and Radar Institute
Deposited By: Muriel Aline, Pinheiro
Deposited On:21 Oct 2014 11:54
Last Modified:28 Nov 2023 08:47

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