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Volume 32 Issue 4
Dec.  2010
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Sun Kang, Jin Gang, Zhu Xiao-Hua. The Long-range Dependence Characteristic Analysis of Sea Clutter Based on the Semivariogram Function[J]. Journal of Electronics & Information Technology, 2012, 34(10): 2466-2469. doi: 10.3724/SP.J.1146.2011.01341
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.
  • Bon N, Khenchaf A, and Garello R. GLRT subspacedetection for range and doppler distributed targets [J].IEEETransactions on Aerospace and Electronic Systems.2008,44(2):678-696[2]Bandiera F and Maio A D, et al.. Adaptive radar detection ofdistributed targets in homogeneous and partiallyhomogeneous noise plus subspace interference [J].IEEETransactions on Signal Processing.2007, 55(4):1223-1237[3]Conte E, Farina A, and Gerlach K. Adaptive detectionalgorithm of range spread targets with orthogonal rejection[J].IEEE Transactions on Aerospace and Electronic Systems.2007, 43(2):738-752[4]Maio A D. Robust adaptive radar detection in the presence ofsteering vector mismatches [J].IEEE Transactions onAerospace and Electronic Systems.2005, 41(4):1322-1337[5]Besson O. Adaptive detection with bounded steering vectorsmismatch angle [J].IEEE Transactions on Signal Processing.2007, 55(4):1560-1564[6]Maio A D, Nicola S D, and Huang Y W. Adaptive detectionand estimation in the presence of useful signal andinterference mismatches [J]. IEEE Transactions on SignalProcessing, 2009, 56(11): 5618-5629.[7]Fishler E, Grossmann M, and Messer H. Detection of signalsby information theoretic criteria: General asymptoticperformance analysis[J].IEEE Transactions on SignalProcessing.2002, 50(5):1027-1036[8]Lopez-risueno G and Grajal J. Multiple signal detection andestimation using atomic decomposition and EM [J].IEEETransactions on Aerospace and Electronic Systems.2006,42(1):84-102[9]Yau S F and Bresler Y. Maximum likelihood parameterestimation of superimposed signals by dynamicprogramming[J].IEEE Transactions on Signal Processing.1993,41(2):804-820[10]VanTrees H L. Detection, Estimation, and ModulationTheory [M]. New York: Wiley, 1971: 232-240.[11]黄巍, 贺知明, 向敬成. 宽带雷达能量积累与信号检测方法研究[J]. 系统工程与电子技术, 2004, 26(7): 889-892.[12]杜兰. 雷达高分辨距离像目标识别方法研究 [D]. [博士论文].西安电子科技大学. 2007.
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