Memorias de investigación
Communications at congresses:
Técnica de Inversión Temporal para la Mejora del Enfocado de Imágenes SAR en Entornos Urbanos
Year:2011
Research Areas
  • Electronic technology and of the communications
Information
Abstract
Conventional SAR (Synthetic Aperture Radar) techniques only 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. As a result, multiple-bounce returns are additionally superposed to direct 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 (TR-SAR), it is possible to reduce considerably -or almost mitigate- ghosting artifacts, recovering the lost resolution due to multipath effects. Furthermore, some focusing indicators such as entropy (E), contrast (C) and Rényi entropy (RE) provide us a good focusing criterion when using TR-SAR.
International
No
Congress
XXVI Simposium Nacional de la Unión Científica Internacional de Radio (URSI 2011)
960
Place
Leganés, Madrid, España
Reviewers
Si
ISBN/ISSN
978-84-933934-5-8
Start Date
07/09/2011
End Date
09/09/2011
From page
1
To page
4
CD de Actas
Participants
  • Autor: Imanol De Arriba Ruiz UPM
  • Autor: Felix Perez Martinez UPM
  • Autor: José María Muñoz Ferreras Universidad de Alcalá de Henares
Research Group, Departaments and Institutes related
  • Creador: Departamento: Señales, Sistemas y Radiocomunicaciones