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[PP2-3-9] Speckle Formation

A typical “salt-and-pepper” noise-like physical phenomenon that is not a noise but a deterministic property of SAR imagery is the so called speckle. It appears when a resolution cell of a SAR system contains more than one scatterer. In that case, the total scattering from the resolution cell is a coherent sum of the backscatter originating from the different scatterers. In order to reduce this effect, speckle reduction methods can be applied.

External resources

  • Henderson, F. M. & Lewis, A. J. (ed.) (1998). Principles & Applications of Imaging RADAR. Manual of Remote Sensing. Third Edition, Volume 2. John Wiley & Sons, USA.
  • Rees, W. G. (2010). Physical Principles of Remote Sensing. Second Edition. Cambridge University Press, pp. 343.

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