Automatic Target Recognition in Synthetic Aperture Sonar Images Based on Geometrical Feature Extraction

Automatic Target Recognition Strategy for Synthetic Aperture Radar Images Based on Combined Discrimination Trees

A strategy is introduced for achieving high accuracy in synthetic aperture radar (SAR) automatic target recognition (ATR) tasks. Initially, a novel pose rectification process and an image normalization process are sequentially introduced to produce images with less variations prior to the feature processing stage. Then, feature sets that have a wealth of texture and edge information are extract...

Speckle Reduction of Synthetic Aperture Sonar Images

Multi-look processing is a well known technique for reducing speckle in coherent imagery. This paper investigates the use of multi-look processing in range (frequency-compounding) on SAS images. The coherence between sub-images produced by frequency compounding is determined and a coherence model proposed. This is used to calculate the level of speckle reduction for a given number of looks and ...

Feature matching and target recognition in synthetic aperture radar imagery

An approach for target matching in Synthetic aperture radar (SAR) imagery is presented. The method is feature based where feature points in a target candidate are matched against those from an exemplar database. Matching is formulated as a non-linear optimization problem that encourages matches while minimizing the distance between the matched features. The formulation allows for missing, spuri...

sea target detection in polarimetric synthetic aperture radar images

study on polsar target detection essentially requires the cattering information and polarimetric statistical data. theoretical analysis shows that some terms of the second order scattering matrices such as coherence and covariance matrix clearly show the differences between nonsymmetrical man-made objects and natural clatters which being reflection symmetric. using the model derived from these ...

Synthetic Aperture Radar (sar) Automatic Target Recognition (atr) Parametric Study