Title :
Open-loop adaptive filtering for speckle reduction in synthetic aperture radar images
Author :
Rohwer, J.A. ; Magotra, N. ; Stearns, Stephen D.
Author_Institution :
Sandia Nat. Labs., Albuquerque, NM, USA
fDate :
Oct. 29 2000-Nov. 1 2000
Abstract :
The two-dimensional adaptive correlation enhancer algorithm (2DACE) is an open-loop adaptive filtering technique that can be applied to synthetic aperture radar (SAR) images for the purpose of reducing speckle. This paper includes the development of the 2DACE algorithm and the optimum filter parameters for this specific task. The unique implementation of 2DACE with a data amplitude pre-compression operation was proven to effectively reduce speckle, enhance fine features, and maintain image resolution.
Keywords :
adaptive filters; adaptive signal processing; circuit optimisation; data compression; filtering theory; image enhancement; image resolution; radar imaging; radar resolution; speckle; synthetic aperture radar; two-dimensional digital filters; 2D adaptive correlation enhancer algorithm; 2D low pass filter; 2DACE; SAR images; data amplitude pre-compression; fine features enhancement; image resolution; open-loop adaptive filtering; optimum filter parameters; speckle reduction; synthetic aperture radar images; Adaptive filters; Degradation; Finite impulse response filter; Image coding; Image resolution; Rough surfaces; Speckle; Surface roughness; Synthetic aperture radar; Testing;
Conference_Titel :
Signals, Systems and Computers, 2000. Conference Record of the Thirty-Fourth Asilomar Conference on
Conference_Location :
Pacific Grove, CA, USA
Print_ISBN :
0-7803-6514-3
DOI :
10.1109/ACSSC.2000.910948
