elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Impressum | Kontakt | English
Schriftgröße: [-] Text [+]

Azimuth Phase Center Adaptation on Transmit for High-Resolution Wide-Swath SAR Imaging

Gebert, Nicolas und Krieger, Gerhard (2009) Azimuth Phase Center Adaptation on Transmit for High-Resolution Wide-Swath SAR Imaging. IEEE Geoscience and Remote Sensing Letters, 6 (4), Seiten 782-786.

[img]
Vorschau
PDF - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
561kB

Kurzfassung

Synthetic aperture radar (SAR) systems with multiple receive channels allow for high-resolution wide-swath imaging thus overcoming a fundamental limitation of conventional single-aperture SAR. By using multiple apertures in azimuth, additional samples are received for each transmitted pulse. This allows for a reduced pulse repetition frequency (PRF) thereby enabling a wider swath. However, a non-optimum PRF is associated with a non-uniform sample spacing in azimuth and needs to be compensated by a multi-channel reconstruction algorithm. For strong deviations from the optimum PRF, the inverse character of such an algorithm might result in a degraded performance. This can be overcome by an innovative advanced transmit antenna architecture which allows for a pulse-to-pulse shift of the phase center. Such an antenna enables the adaptive adjustment of the system�s phase center positions to the respective PRF, by this ensuring constant performance over a clearly extended PRF range. Especially in combination with conventional multi-channel processing strategies this technique represents the next step towards a fully active Multiple-Input Multiple-Output (MIMO) SAR and has a great potential for future systems.

Dokumentart:Zeitschriftenbeitrag
Zusätzliche Informationen:Ã�©2009 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE. This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder.
Titel:Azimuth Phase Center Adaptation on Transmit for High-Resolution Wide-Swath SAR Imaging
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Gebert, NicolasNICHT SPEZIFIZIERT
Krieger, GerhardNICHT SPEZIFIZIERT
Datum:Oktober 2009
Erschienen in:IEEE Geoscience and Remote Sensing Letters
Referierte Publikation:Ja
In Open Access:Nein
In SCOPUS:Ja
In ISI Web of Science:Ja
Band:6
Seitenbereich:Seiten 782-786
Herausgeber:
HerausgeberInstitution und/oder E-Mail-Adresse der Herausgeber
IEEE, NICHT SPEZIFIZIERT
Status:veröffentlicht
Stichwörter:Optimized multi-channel azimuth processing, high-resolution wide-swath SAR, digital beamforming on receive, phase center adaptation
HGF - Forschungsbereich:Verkehr und Weltraum (alt)
HGF - Programm:Weltraum (alt)
HGF - Programmthema:W EO - Erdbeobachtung
DLR - Schwerpunkt:Weltraum
DLR - Forschungsgebiet:W EO - Erdbeobachtung
DLR - Teilgebiet (Projekt, Vorhaben):W - Vorhaben Entwicklung eines Mini-SAR (alt)
Standort: Oberpfaffenhofen
Institute & Einrichtungen:Institut für Hochfrequenztechnik und Radarsysteme > Radarkonzepte
Institut für Hochfrequenztechnik und Radarsysteme
Hinterlegt von: Nicolas Gebert
Hinterlegt am:24 Mär 2009
Letzte Änderung:12 Dez 2013 20:37

Nur für Mitarbeiter des Archivs: Kontrollseite des Eintrags

Blättern
Suchen
Hilfe & Kontakt
Informationen
electronic library verwendet EPrints 3.3.12
Copyright © 2008-2013 Deutsches Zentrum für Luft- und Raumfahrt (DLR). Alle Rechte vorbehalten.