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SAR Signal Reconstruction from Non-Uniform Displaced Phase Centre Sampling

Krieger, Gerhard and Gebert, Nicolas and Moreira, Alberto (2004) SAR Signal Reconstruction from Non-Uniform Displaced Phase Centre Sampling. In: Proceedings of the International Geoscience and Remote Sensing Symposium (IGARSS), 3, pp. 1763-1766. IEEE. IEEE Geoscience and Remote Sensing Symposium (IGARSS), 2004-09-20 -2004-09-24, Anchorage, USA. ISBN 0-7803-8742-2. ISSN Digital Object Identifier: 10.1109/IGARSS.2004.1370674

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Abstract

The displaced phase centre (DPC) technique will enable a wide swath SAR with high azimuth resolution. In a classic DPC system, the PRF has to be chosen such that the SAR carrier moves just one half of its antenna length between subsequent radar pulses. Any deviation from this PRF will result in a nonuniform sampling of the synthetic aperture. This paper shows that an unambiguous reconstruction of the SAR signal is also possible 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. This algorithm will also have a great potential for multistatic satellite constellations as well as the dual receive antennas in Radarsat II and TerraSAR-X.

Document Type:Conference or Workshop Item (Speech, Paper)
Additional Information:©2004 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.
Title:SAR Signal Reconstruction from Non-Uniform Displaced Phase Centre Sampling
Authors:
AuthorsInstitution or Email of Authors
Krieger, GerhardUNSPECIFIED
Gebert, NicolasUNSPECIFIED
Moreira, AlbertoUNSPECIFIED
Date:2004
Journal or Publication Title:Proceedings of the International Geoscience and Remote Sensing Symposium (IGARSS)
Refereed publication:No
In ISI Web of Science:No
Volume:3
Page Range:pp. 1763-1766
Publisher:IEEE
ISSN:Digital Object Identifier: 10.1109/IGARSS.2004.1370674
ISBN:0-7803-8742-2
Status:Published
Keywords:ambiguity suppression, multistatic SAR, digital beamforming, high resolution wide swath (HRWS) SAR
Event Title:IEEE Geoscience and Remote Sensing Symposium (IGARSS)
Event Location:Anchorage, USA
Event Type:international Conference
Event Dates:2004-09-20 -2004-09-24
Organizer:IEEE
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
Microwaves and Radar Institute > Spaceborne SAR Systems
Deposited By: Dr.-Ing. Gerhard Krieger
Deposited On:11 Aug 2006
Last Modified:12 Dec 2013 19:56

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