Open Access

Multidimensional Speckle Noise Model

  • Carlos López-Martínez1Email author,
  • Xavier Fàbregas2 and
  • Eric Pottier1
EURASIP Journal on Advances in Signal Processing20052005:180956

Received: 30 June 2004

Published: 14 December 2005


One of the main problems of SAR imagery is the presence of speckle noise, originated by the inherent coherent nature of this type of systems. For one-dimensional SAR systems it has been demonstrated that speckle can be considered as a multiplicative noise term. Nevertheless, this simple model cannot be exported when multidimensional SAR imagery is addressed. This paper is devoted to present the latest advances into the definition of a multidimensional speckle noise model which does not depend on the data dimensionality. Speckle noise may be modeled by multiplicative and additive noise sources, whose combination is determined by the data's correlation structure. The validity of the proposed model is demonstrated by its application to a real L-band multidimensional SAR dataset acquired by the German ESAR sensor.

Keywords and phrases:

multidimensional SAR imagery speckle noise noise modeling

Authors’ Affiliations

Equipe SAPHIR, Institut d'Electronique et de Télécommunications de Rennes UMR CNRS 6164, Université de Rennes 1, Campus de Beaulieu
Grup de Teledeteccio Activa, Departament de Teoria del Senyal i Communicacions, Universitat Politecnica de Catalunya (UPC)


© Carlos López-Martínez et al. 2005

This article is published under license to BioMed Central Ltd. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.