Observatorio de I+D+i UPM

Descripción
Synthetic Aperture Radar (SAR) images a target region reflectivity function in the multi-dimensional spatial domain of range and cross-range with a finer azimuth resolution than the one provided by any onboard real antenna. Conventional SAR techniques just consider a single reflection of transmitted waveforms from targets. Nevertheless, today?s new applications force SAR systems to work in much more complex scenes such as urban environments. Consequently, multiplebounce returns are additionally superposed to direct-scatter echoes. We refer to these as ghost images, since they obscure true target image and lead to poor resolution. By applying Time Reversal concept to SAR imaging (TRSAR), it is possible to reduce considerably ?or even mitigate? ghosting artifacts, recovering the lost resolution due to multipath propagation. Furthermore, some focusing indicators such as entropy (E), contrast (C) and Rényi entropy (RE) provide us with a good focusing criterion when using TR-SAR.
Internacional	Si
ISSN o ISBN	978-1-662276-177-7
Entidad relacionada
Nacionalidad Entidad	Sin nacionalidad
Lugar del congreso	Granada, España

Esta actividad pertenece a memorias de investigación

• Autor: Fernando Calle Gomez (UPM)
• Autor: Sara Martin Horcajo (UPM)
• Autor: Roberto Cuerdo Bragado (UPM)
• Autor: Marko Jak Tadjer . (UPM)
• Autor: Fatima Romero Rojo (UPM)
• Autor: Jesus Grajal De la Fuente (UPM)
• Autor: Elias Muñoz Merino (UPM)

• Creador: Grupo de Investigación: Microondas y Radar
• Departamento: Señales, Sistemas y Radiocomunicaciones
• Departamento: Ingeniería Electrónica