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Optics Letters

Optics Letters


  • Vol. 15, Iss. 13 — Jul. 1, 1990
  • pp: 740–742

Speckle reduction in synthetic-aperture-radar imagery

E. R. Harvey and G. V. April  »View Author Affiliations

Optics Letters, Vol. 15, Issue 13, pp. 740-742 (1990)

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Speckle appearing in synthetic-aperture-radar images degrades the information contained in these images. Speckle noise can be suppressed by adapted local processing techniques, permitting the definition of statistical parameters inside a small window centered on each pixel of the image. Two processing algorithms are examined; the first one uses the intensity as a variable, and the second one works on a homomorphic transformation of the image intensity. A statistical model for speckle noise that takes into account correlation in multilook imagery has been used to develop these processing algorithms. Several experimental results of processed Seasat-A synthetic-aperture-radar images are discussed.

© 1990 Optical Society of America

Original Manuscript: December 11, 1989
Manuscript Accepted: April 3, 1990
Published: July 1, 1990

E. R. Harvey and G. V. April, "Speckle reduction in synthetic-aperture-radar imagery," Opt. Lett. 15, 740-742 (1990)

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