New Technique for Static Target Detection in Dense-Multipath Urban Environments

Arriba Ruiz, Imanol de; Perez Martinez, Felix y Muñoz Ferreras, José María (2011). New Technique for Static Target Detection in Dense-Multipath Urban Environments. En: "45th IEEE International Carnahan Conference on Security Technology (ICCST 2011)", 18/10/2011 - 21/10/2011, Mataró, Barcelona, España. pp. 1-7.

Descripción

Título: New Technique for Static Target Detection in Dense-Multipath Urban Environments
Autor/es:
  • Arriba Ruiz, Imanol de
  • Perez Martinez, Felix
  • Muñoz Ferreras, José María
Tipo de Documento: Ponencia en Congreso o Jornada (Artículo)
Título del Evento: 45th IEEE International Carnahan Conference on Security Technology (ICCST 2011)
Fechas del Evento: 18/10/2011 - 21/10/2011
Lugar del Evento: Mataró, Barcelona, España
Título del Libro: 45th IEEE International Carnahan Conference on Security Technology (ICCST 2011)
Fecha: 2011
Materias:
Escuela: E.T.S.I. Telecomunicación (UPM)
Departamento: Señales, Sistemas y Radiocomunicaciones
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

Texto completo

[img]
Vista Previa
PDF (Document Portable Format) - Se necesita un visor de ficheros PDF, como GSview, Xpdf o Adobe Acrobat Reader
Descargar (288kB) | Vista Previa

Resumen

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 on-board real antenna. Conventional SAR techniques assume a single reflection of transmitted waveforms from targets. Nevertheless, new uses of Unmanned Aerial Vehicles (UAVs) for civilian-security applications force SAR systems to work in much more complex scenes such as urban environments. Consequently, multiple-bounce returns are additionally superposed to direct-scatter echoes. They are known as ghost images, since they obscure true target image and lead to poor resolution. All this may involve a significant problem in applications related to surveillance and security. In this work, an innovative multipath mitigation technique is presented in which Time Reversal (TR) concept is applied to SAR images when the target is concealed in clutter, leading to TR-SAR technique. This way, the effect of multipath is considerably reduced ?or even removed?, 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.

Más información

ID de Registro: 13882
Identificador DC: http://oa.upm.es/13882/
Identificador OAI: oai:oa.upm.es:13882
Depositado por: Memoria Investigacion
Depositado el: 22 Feb 2013 12:34
Ultima Modificación: 21 Abr 2016 13:19
  • Open Access
  • Open Access
  • Sherpa-Romeo
    Compruebe si la revista anglosajona en la que ha publicado un artículo permite también su publicación en abierto.
  • Dulcinea
    Compruebe si la revista española en la que ha publicado un artículo permite también su publicación en abierto.
  • Recolecta
  • e-ciencia
  • Observatorio I+D+i UPM
  • OpenCourseWare UPM