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Unambiguous SAR Signal Reconstruction from Nonuniform Displaced Phase Center Sampling

Krieger, Gerhard and Gebert, Nicolas and Moreira, Alberto (2004) Unambiguous SAR Signal Reconstruction from Nonuniform Displaced Phase Center Sampling. IEEE Geoscience and Remote Sensing Letters, 1 (4), pp. 260-264. IEEE. DOI: 10.1109/LGRS.2004.832700.

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Abstract

The displaced phase center (DPC) technique will enable a wide-swath synthetic aperture radar (SAR) with high azimuth resolution. In a classic DPC system, the pulse repetition frequency (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 letter derives an innovative reconstruction algorithm and shows that an unambiguous reconstruction of a SAR signal is possible for nonuniform sampling of the synthetic aperture. This algorithm will also have great potential for multistatic satellite constellations as well as the dual receive antenna mode in Radarsat 2 and TerraSAR-X.

Document Type:Article
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:Unambiguous SAR Signal Reconstruction from Nonuniform Displaced Phase Center Sampling
Authors:
AuthorsInstitution or Email of Authors
Krieger, GerhardUNSPECIFIED
Gebert, NicolasUNSPECIFIED
Moreira, AlbertoUNSPECIFIED
Date:October 2004
Journal or Publication Title:IEEE Geoscience and Remote Sensing Letters
Volume:1
DOI:10.1109/LGRS.2004.832700
Page Range:pp. 260-264
Publisher:IEEE
Status:Published
Keywords:Azimuth ambiguities, digital beamforming, displaced phase center antenna (DPCA), high-resolution wide-swath, SAR, interferometry, synthetic aperture radar (SAR).
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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