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ZHANG Wan-jun, WU Xiao-ying, WANG Xin. Multi-resolution EMD and classscatter matrix extracting of tank sound[J]. JOURNAL OF BEIJING INSTITUTE OF TECHNOLOGY, 2012, 21(1): 91-95.
Citation: ZHANG Wan-jun, WU Xiao-ying, WANG Xin. Multi-resolution EMD and classscatter matrix extracting of tank sound[J].JOURNAL OF BEIJING INSTITUTE OF TECHNOLOGY, 2012, 21(1): 91-95.
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Multi-resolution EMD and classscatter matrix extracting of tank sound

  • Department of Weapon Engineering, Academy of Armored Force Engineering of PLA, Beijing 100072, China

  • Received Date:2011-01-11
    Abstract
  • The acoustic vibration signal of tank is disassembled into the sum of intrinsic mode function (IMF) by multi-resolution empirical mode decomposition (EMD) method. The instantaneous frequency is obtained, and feature transformation matrix is figured out by class scatter matrix. Multi-dimensional scale energy vector is mapped into low-dimensional eigenvector, and classification extraction is realized. This method sufficiently separates of different sound target features. The test result indicates that it is effective.
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