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Adaptive Boosting for Synthetic Aperture Radar Automatic Target Recognition

By Yijun Sun, Zhipeng Liu, Sinisa Todorovic and Jian Li


We propose a novel automatic target recognition (ATR) system for classification of three types of ground vehicles in the MSTAR public release database. First, MSTAR image chips are represented as fine and raw feature vectors, where raw features compensate for the target pose estimation error that corrupts fine image features. Then, the chips are classified by using the adaptive boosting (AdaBoost) algorithm with the radial basis function (RBF) network as the base learner. Since the RBF network is a binary classifier, we decompose our multiclass problem into a set of binary ones through the error-correcting output codes (ECOC) method, specifying a dictionary of code words for the set of three possible classes. AdaBoost combines the classification results of the RBF network for each binary problem into a code word, which is then “decoded ” as one of the code words (i.e., ground-vehicle classes) in the specified dictionary. Along with classification, within the AdaBoost framework, we also conduct efficient fusion of the fine and raw image-feature vectors. The results of large-scale experiments demonstrate that our ATR scheme outperforms the state-of-the-art systems reported in the literature

Topics: MSTAR, automatic target recognition, adaptive boosting, feature fusion IEEE Transactions on Aerospace and Electronic Systems
Year: 2008
OAI identifier: oai:CiteSeerX.psu:
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