High Resolution Wide Swath SAR Imaging - System Performance and Influence of Perturbations

Gebert N, Krieger G, Moreira A (2005)

Publication Type: Conference contribution

Publication year: 2005

Publisher: IEEE Computer Society

Edited Volumes: Proceedings International Radar Symposium

Book Volume: 2005-January

Pages Range: 49-54

Conference Proceedings Title: International Radar Symposium

URI: https://elib.dlr.de/18799/

Abstract

The displaced phase centre (DPC) technique enables a wide swath SAR with high azimuth resolution. In classic DPC systems, pulse repetition frequency (PRF), sensor velocity and antenna length underlie a stringent timing requirement to en­sure uniform sampling of the syn­thetic aperture. This constraint can be overcome by the use of a recon­struction algorithm, which enables a recovery of the unambiguous azimuth (Doppler) spec­trum also in case of a non-uniform sampling. This paper illustrates the principle of the reconstruction and ex­plains its limitations and the impacts on the ambiguity suppression. The potential of the algorithm when applied to DPC systems like TerraSAR-X with its split receive antenna is demon­strated and the benefits re­sulting from th e additional receive ap­erture re­garding swat h width and resolution are pointed out. Further on, the impact of ad­ditive and phase noise on the recon­struction and its sensitivity against these perturbations are shown.

Authors with CRIS profile

Gerhard Krieger

Additional Organisation(s)

Professur für Kognitive Radarsysteme für die Fernerkundung

Involved external institutions

Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR) / German Aerospace Center DE Germany (DE)

How to cite

APA:

Gebert, N., Krieger, G., & Moreira, A. (2005). High Resolution Wide Swath SAR Imaging - System Performance and Influence of Perturbations. In Ortun German Institute of Navigation - Deutsche Gesellschaft für (Eds.), International Radar Symposium (pp. 49-54). IEEE Computer Society.

MLA:

Gebert, Nicolas, Gerhard Krieger, and Alberto Moreira. "High Resolution Wide Swath SAR Imaging - System Performance and Influence of Perturbations." Proceedings of the International Radar Symposium, IRS 2005 Ed. Ortun German Institute of Navigation - Deutsche Gesellschaft für, IEEE Computer Society, 2005. 49-54.

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