Villano M, Krieger G, Moreira A (2015)
Publication Type: Conference contribution
Publication year: 2015
Publisher: Institute of Electrical and Electronics Engineers Inc.
Edited Volumes: Proceedings of the 2015 IEEE 5th Asia-Pacific Conference on Synthetic Aperture Radar, APSAR 2015
Pages Range: 204-209
Conference Proceedings Title: Asia-Pacific Conference on Synthetic Aperture Radar (APSAR)
ISBN: 9781467372961
URI: https://elib.dlr.de/96973/
DOI: 10.1109/APSAR.2015.7306189
Staggered SAR is an innovative synthetic aperture radar (SAR) concept, where the pulse repetition interval (PRI) is continuously varied. This, together with digital beamforming (DBF) in elevation, allows high-resolution imaging of a wide continuous swath without the need for a long antenna with multiple azimuth apertures. As an additional benefit, the energy of range and azimuth ambiguities is spread over large areas: Ambiguities therefore appear in the image as a noise-like disturbance rather than localized artifacts. An analytical expression for the range-ambiguity-to-signal ratio (RASR) in staggered SAR is provided and a novel method for the estimation of the azimuth ambiguity-to-signal ratio (AASR) is proposed. A C-band design example based on a planar antenna is shown as well. The impact of staggered SAR operation on image quality is further assessed using highly oversampled F-SAR airborne data.
APA:
Villano, M., Krieger, G., & Moreira, A. (2015). Ambiguities and Image Quality in Staggered SAR. In Asia-Pacific Conference on Synthetic Aperture Radar (APSAR) (pp. 204-209). Institute of Electrical and Electronics Engineers Inc..
MLA:
Villano, Michelangelo, Gerhard Krieger, and Alberto Moreira. "Ambiguities and Image Quality in Staggered SAR." Proceedings of the 5th IEEE Asia-Pacific Conference on Synthetic Aperture Radar, APSAR 2015 Institute of Electrical and Electronics Engineers Inc., 2015. 204-209.
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