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Target recognition by scattering centers with partial occlusion

Due to the complexity of synthetic aperture radar (SAR) image formation and the sensitivity to partial occlusion, automatic target recognition (ATR) remains an important, yet challenging problem in SAR image interpretation. Scattering center model provides a concise and physically relevant description of target's electromagnetic scattering phenomenon which makes it an ideal candidate for ATR. In this paper, a scattering center model based method is proposed for recognizing target with partial occlusion. Each scattering center of the target is a contributor for recognition. The novelty of the approach comes synthesizing similarity of each scattering center as the match score between the model and SAR data, taking into account of the location relationship of the scatters for occlusion. Experiments using data predicted by a high frequency electromagnetic (EM) code verify the validity of the method, and demonstrate superior performance in recognition, compared to baselines that are unaware of occlusions.