Observatorio de I+D+i UPM

Memorias de investigación
Conferences:
Time-Reversal-Based Multipath Mitigation Technique for Entropy Minimization of SAR Images
Year:2011
Research Areas
  • Engineering,
  • Electronic technology and of the communications,
  • Electric engineers, electronic and automatic (eil)
Information
Abstract
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.
International
Si
978-1-662276-177-7
Entity
Entity Nationality
Sin nacionalidad
Place
Granada, España
Participants
  • 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)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Microondas y Radar
  • Departamento: Señales, Sistemas y Radiocomunicaciones
  • Departamento: Ingeniería Electrónica
S2i 2020 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)