Paper Information

Journal:   REMOTE SENSING & GIS   WINTER 2010 , Volume 1 , Number 4; Page(s) 73 To 86.
 
Paper: 

INVESTIGATION OF SAR POLARIMETRY MATRIX ELEMENTS FOR SELECTION OF CLASSIFICATION PARAMETER

 
 
Author(s):  BAHRAMI A., SAHEBI M.R.*, MOKHTARZADEH M.
 
* K.N.TOOSI UNIVERSITY OF TECHNOLOGY, FACULTY OF GEODESY AND GEOMATIC ENGINEERING, VALI-ASR AVE., TEHRAN, IRAN
 
Abstract: 

By coming the new generation of SAR polarimetric satellites, such as TerraSAR-X, RADARSAT-2, ALOS, etc., the development of polarimetric synthetic aperture radar (PolSAR) applications in the field of natural hazard and environmental, such as subsidence, soil erosion, earthquake prediction, volcano activities and flood have been accelerated. The aim of this article is extraction of basic information from POLSAR images and determining the amount of the importance of each characteristics in feature vector spaces. The elements of the feature vector space are produced by multiplication of HH, VV and HV bands that contained the scope of phase and amplitude information. Performed by making Fischer criterion for class separation, the significance of each features are verified and therefore, the features are ranked based upon the power of separability and correlations between the bands. In the next stage, by performing supervise Maximum likelihood classifier, the accuracy of the different combination of the features has been analyzed. Finally, the best combination of the existing features was obtained. Extraction of the best mining consisting of at least features in the feature vector space, not only protects the most important information, but also leads to reduction in the volume of POLSAR image processing operations. In this regard, the proposed algorithm in this article can be applied on any polarimetric data.

 
Keyword(s): SAR POLARIMETRY, FEATURE VECTOR SPACE, FISHER RATIO, BHATTACHARYYA DISTANCE, FEATURE SELECTION
 
References: 
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