Amin, Ershad Junus und Krieger, Gerhard und Younis, Marwan und Bordoni, Federica und Barros Cardoso da Silva, Andre und Moreira, Alberto (2024) A 2-D Range Ambiguity Suppression Method based on Blind Source Separation for Multichannel SAR Systems. IEEE Transactions on Geoscience and Remote Sensing, 62. IEEE - Institute of Electrical and Electronics Engineers. doi: 10.1109/TGRS.2024.3355149. ISSN 0196-2892.
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Offizielle URL: https://ieeexplore.ieee.org/document/10401999
Kurzfassung
Advanced multichannel spaceborne synthetic aperture radar (SAR) systems with multiple elevation beams allow to obtain high-resolution and wide-swath SAR images. However, the degradation of the SAR image quality due to range ambiguities is still an issue. In this paper, the range-ambiguity problem is analytically modeled and solved by employing a range-time and Doppler-frequency dependent mixing matrix which describes the linear superposition of multiple mutually range-ambiguous radar echoes. The overall framework can be regarded as a generalization of the cocktail party problem where each listener has to separate one speech signal out of a linear superposition of multiple voices. For the first time, the 2-D dependence of the antenna radiation pattern in the elevation and azimuth directions is considered by accounting for both the real-time beamsteering in elevation and the systematic variations of the mixing coefficients with Doppler frequency. A novel solution, based on higher-order blind source separation, is presented. The performance of the proposed method is numerically analyzed, with reference to an array-fed reflector antenna SAR system, by simulating a realistic acquisition scenario. To this aim, real SAR data and the actual antenna patterns of the Tandem-L mission proposal are considered.
elib-URL des Eintrags: | https://elib.dlr.de/199378/ | ||||||||||||||||||||||||||||
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Dokumentart: | Zeitschriftenbeitrag | ||||||||||||||||||||||||||||
Titel: | A 2-D Range Ambiguity Suppression Method based on Blind Source Separation for Multichannel SAR Systems | ||||||||||||||||||||||||||||
Autoren: |
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Datum: | 17 Januar 2024 | ||||||||||||||||||||||||||||
Erschienen in: | IEEE Transactions on Geoscience and Remote Sensing | ||||||||||||||||||||||||||||
Referierte Publikation: | Ja | ||||||||||||||||||||||||||||
Open Access: | Ja | ||||||||||||||||||||||||||||
Gold Open Access: | Nein | ||||||||||||||||||||||||||||
In SCOPUS: | Ja | ||||||||||||||||||||||||||||
In ISI Web of Science: | Ja | ||||||||||||||||||||||||||||
Band: | 62 | ||||||||||||||||||||||||||||
DOI: | 10.1109/TGRS.2024.3355149 | ||||||||||||||||||||||||||||
Verlag: | IEEE - Institute of Electrical and Electronics Engineers | ||||||||||||||||||||||||||||
ISSN: | 0196-2892 | ||||||||||||||||||||||||||||
Status: | veröffentlicht | ||||||||||||||||||||||||||||
Stichwörter: | Digital beamforming (DBF), echo separation, high-resolution wide-swath, independent component analysis, reflector antenna, spaceborne synthetic aperture radar (SAR) | ||||||||||||||||||||||||||||
HGF - Forschungsbereich: | Luftfahrt, Raumfahrt und Verkehr | ||||||||||||||||||||||||||||
HGF - Programm: | Raumfahrt | ||||||||||||||||||||||||||||
HGF - Programmthema: | Erdbeobachtung | ||||||||||||||||||||||||||||
DLR - Schwerpunkt: | Raumfahrt | ||||||||||||||||||||||||||||
DLR - Forschungsgebiet: | R EO - Erdbeobachtung | ||||||||||||||||||||||||||||
DLR - Teilgebiet (Projekt, Vorhaben): | R - Entwicklung eines Mini-SAR | ||||||||||||||||||||||||||||
Standort: | Oberpfaffenhofen | ||||||||||||||||||||||||||||
Institute & Einrichtungen: | Institut für Hochfrequenztechnik und Radarsysteme > Radarkonzepte | ||||||||||||||||||||||||||||
Hinterlegt von: | Amin, Ershad Junus | ||||||||||||||||||||||||||||
Hinterlegt am: | 17 Nov 2023 17:34 | ||||||||||||||||||||||||||||
Letzte Änderung: | 28 Feb 2024 16:37 |
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