Online Dictionary Learning Aided Target Recognition In Cognitive GPR

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Giovanneschi, Fabio ; Mishra, Kumar Vijay ; Gonzalez-Huici, Maria Antonia ; Eldar, Yonina C. ; Ender, Joachim H. G. (2017)
  • Subject: Computer Science - Information Theory

Sparse decomposition of ground penetration radar (GPR) signals facilitates the use of compressed sensing techniques for faster data acquisition and enhanced feature extraction for target classification. In this paper, we investigate the application of an online dictionary learning (ODL) technique in the context of GPR to bring down the learning time as well as improve identification of abandoned anti-personnel landmines. Our experimental results using real data from an L-band GPR for PMN/PMA2, ERA and T72 mines show that ODL reduces learning time by 94\% and increases clutter detection by 10\% over the classical K-SVD algorithm. Moreover, the proposed methodology could be helpful in cognitive operation of the GPR where the system adapts the range sampling based on the learned dictionary.
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