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Memorias de investigación
Artículos en revistas:
On the Doppler Spreading Effect for the Range-Instantaneous-Doppler Technique in Inverse Synthetic Aperture Radar Imagery
Año:2010
Áreas de investigación
  • Tecnología electrónica y de las comunicaciones
Datos
Descripción
Inverse synthetic aperture radar (ISAR) is an allweather radar technique which may generate high-resolution images of noncooperative targets. The standard range-Doppler algorithm (RDA) is usually employed for image generation. However, the images obtained with RDA are usually blurred because of the relative motion between radar and target. As a consequence, motion compensation techniques should be used to improve the imagery quality. The range-instantaneous-Doppler (RID) technique based on time¿frequency transforms has been proposed for obtaining a sequence of focused SAR images without the need of using motion ompensation techniques. However, in this letter, it is clearly shown that the migration of the target catterers in slant range indirectly induces Doppler spreading of the scatterers¿ point spread function in each of the ISAR images obtained by the RID technique. This Doppler spreading means blurring. It is important to highlight that the migration in slant range may be aused not only by the radial component of the ranslational motion but also by the rotational motion. The application of motion compensation techniques prior to he use of the RID technique allows us to mitigate the Doppler spreading, as shown here both for simulated and live data acquired by a high-resolution coherent radar.
Internacional
Si
JCR del ISI
Si
Título de la revista
IEEE Geoscience and Remote Sensing Letters
ISSN
1545-598X
Factor de impacto JCR
1,379
Información de impacto
Volumen
7
DOI
10.1109/LGRS.2009.2030372
Número de revista
1
Desde la página
180
Hasta la página
184
Mes
ENERO
Ranking
Esta actividad pertenece a memorias de investigación
Participantes
  • Autor: José María Muñoz Ferreras (Universidad de Alcalá de Henares)
  • Autor: Felix Perez Martinez (UPM)
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Microondas y Radar
  • Departamento: Señales, Sistemas y Radiocomunicaciones
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