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Volume 32 Issue 4
Dec.  2010
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Li Tao, Feng Da-zheng, Xia Yu-yin. Spatially Distributed Target Detection Based on EM Algorithm and Information-Theoretic Criteria[J]. Journal of Electronics & Information Technology, 2010, 32(4): 908-912. doi: 10.3724/SP.J.1146.2009.00493
Citation: Li Tao, Feng Da-zheng, Xia Yu-yin. Spatially Distributed Target Detection Based on EM Algorithm and Information-Theoretic Criteria[J]. Journal of Electronics & Information Technology, 2010, 32(4): 908-912. doi: 10.3724/SP.J.1146.2009.00493

Spatially Distributed Target Detection Based on EM Algorithm and Information-Theoretic Criteria

doi: 10.3724/SP.J.1146.2009.00493
  • Received Date: 2009-04-07
  • Rev Recd Date: 2009-10-09
  • Publish Date: 2010-04-19
  • A new detection algorithm based on Expectation Maximization (EM) algorithm and information- theoretic criteria for a spatially distributed, range walking and rotating target during a Coherent Processing Interval (CPI) are proposed. The proposed detector is acquired by estimating signal from every range cell in each given velocity through the information-theoretic criteria and EM method and utilizing the characteristics of strong scattering cells relevant to the targets scattering geometry and the correlation of adjacent given velocities. Furthermore , Constant False Alarm Rate (CFAR) property with respect to the unknown noise power is proved. Finally, experimental results for measured data of two planes illustrate that the proposed algorithm achieve a visible performance improvement comparing with conventional GLRT and non-coherent integration.
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