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Digital Beamforming for High Resolution Wide Swath SAR Imaging

Gebert, Nicolas and Krieger, Gerhard and Moreira, Alberto (2005) Digital Beamforming for High Resolution Wide Swath SAR Imaging. In: GeMiC 2005 - Conference Proceedings (CD Rom). GeMiC, Ulm, 05.04.-07.04.2005, Ulm, Germany. ISBN 3-00-015423-X.

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Abstract

Multi-aperture SAR-systems allow for digital beamforming on receive that will enable a wide swath SAR with high azimuth resolution. In classic multi-aperture systems, stringent requirements are imposed on sensor velocity and PRF to ensure uniform sampling of the synthetic aperture. This paper shows that an unambiguous reconstruction of the SAR signal is also possi- ble in case of such a non-optimum PRF. For this, an innovative reconstruction algorithm is derived, which enables a recovery of the unambiguous Doppler spectrum also in case of a non-uniform sampling of the synthetic aperture. Further, the influence of perturbations on the reconstruction is presented and general system aspects are discussed.

Document Type:Conference or Workshop Item (Paper)
Additional Information: LIDO-Berichtsjahr=2005,
Title:Digital Beamforming for High Resolution Wide Swath SAR Imaging
Authors:
AuthorsInstitution or Email of Authors
Gebert, NicolasUNSPECIFIED
Krieger, GerhardUNSPECIFIED
Moreira, AlbertoUNSPECIFIED
Date:2005
Journal or Publication Title:GeMiC 2005 - Conference Proceedings (CD Rom)
Editors:
EditorsEmail
Wolfgang Menzel, University of UlmUNSPECIFIED
ISBN:3-00-015423-X
Status:Published
Keywords:High-Resolution Wide-Swath SAR Imaging, HRWS, Digital Beamforming
Event Title:GeMiC, Ulm, 05.04.-07.04.2005
Event Location:Ulm, Germany
Event Type:international Conference
Organizer:German Institute for Microwave and Antenna Technology
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EO - Erdbeobachtung
DLR - Research area:Space
DLR - Program:W EO - Erdbeobachtung
DLR - Research theme (Project):W - Vorhaben Entwicklung eines Mini-SAR (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Microwaves and Radar Institute
Deposited By: Nicolas Gebert
Deposited On:03 Feb 2006
Last Modified:06 Jan 2010 20:02

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