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oai:recercat.cat:2117/965712025-07-17T00:45:46Zcom_2072_1033col_2072_452950

Constraints in azimuth resolution by refocusing slowly moving targets from single-look complex SAR vignettes Yam Ontiveros, Luis Eduardo Mallorquí Franquet, Jordi Joan Rius Casals, Juan Manuel Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions Universitat Politècnica de Catalunya. RSLAB - Grup de Recerca en Teledetecció Universitat Politècnica de Catalunya. ANTENNALAB - Grup d'Antenes i Sistemes Radio Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica::Teledetecció Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica::Radar Remote sensing Radar Radar Space-based radar Azimuth resolution Complex vessels Doppler centroid frequency Moving point target Single-look complex datum Single-look complexes Space-borne SAR Space-borne SAR sensors Teledetecció Radar Accessing the raw data of spaceborne SAR systems is not always possible to refocus blurred SAR signatures of vessels. Instead, the single-look complex (SLC) data is usually more available, but since the vessel motion can shift the Doppler centroid frequency there can be a partial suppression of the target's spectrum during the windowing in the image formation, limiting the achievable azimuth resolution of the SAR signature. Simulations of slowly moving point-targets and complex vessels with spaceborne SAR sensors (C- and X-band) are carried out to examine the impact of the target motion on the azimuth resolution of its SAR signature. Peer Reviewed Postprint (published version) 2014 Conference report Yam , L.E., Mallorqui, J.J., Rius, J. Constraints in azimuth resolution by refocusing slowly moving targets from single-look complex SAR vignettes. A: European Conference on Synthetic Aperture Radar. "Proceedings 10th European Conference on Synthetic Aperture Radar". Berlin: VDE Conference Publications, 2014, p. 693-696. 978-3-8007-3607-2 https://hdl.handle.net/2117/96571 eng http://ieeexplore.ieee.org.recursos.biblioteca.upc.edu/document/6856889/ http://creativecommons.org/licenses/by-nc-nd/3.0/es/ Restricted access - publisher's policy 4 p. application/pdf VDE Conference Publications