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基于数据阵共扼重构的宽带相干源DOA估计算法 被引量：2

An algorithm for estimating the DOA of wide-band coherent sources based on conjugate reconstruction of data matrix
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摘要 提出了一种基于阵列接收数据阵共扼重构的宽带源DOA估计方法。该算法在保持原ISM算法无需构造复杂聚焦阵的基础上,取前后向平滑的特例———子阵长度与阵元数相等,在每一子带对接收数据阵进行共扼重构,在不损失阵列孔径的前提下实现了相干源的DOA估计,并可提高对非相干源的估计性能。仿真结果验证了新方法的有效性。 Based on the data matrix reconstruction with conjugate data in every sub-band,a new al-gorithm is presented to estimate the DOA of wideband coherent sources.The essential of the data ma-trix re-construction is forward-backward spatial smoothing,and it is a special case where the length of sub-array is equal to that of the array.Therefore,the coherent sources are resolved without losing any array aperture size.For incoherent sources,the estimation performance is improved by reconstructing the received data matrix.The simulation results verified the efficiency of the new method.
作者 刘云 李志舜 王新晓
机构地区 西北工业大学航海工程学院
出处 《电声技术》 北大核心 2003年第10期57-59,63,共4页 Audio Engineering
关键词 宽带 重构 相干源 波达方向 DOA估计 仿真 相干信号子空间处理方法 wideband reconstruction coherent sources DOA estimation
分类号 TN911.7 [电子电信—通信与信息系统]
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参考文献9

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同被引文献19

  • 1刘福来,汪晋宽,于戈.OS-ESPRIT算法[J].东北大学学报（自然科学版）,2004,25(11):1058-1060. 被引量：4
  • 2刘云,李志舜.基于时频阵列模型的波达方向估计[J].声学学报,2005,30(2):115-119. 被引量：7
  • 3曾耀平,严胜刚.欠估计下相干信号的修正MUSIC算法[J].电声技术,2006,30(1):7-9. 被引量：2
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  • 5ROY R, KAILATH T. ESPRIT-estimation of signal parameters via rotational invariance techniques[J]. IEEE Trans. on ASSP, 1989,37(7) :984-995.
  • 6HAARDT M, NOSSEK J A. Unitary ESPRIT: how to obtain increased estimation accuracy with a reduced computational burden[J]. IEEE Trans. on ASSP,1995,43 (5) :1232-1242.
  • 7SHAN T J, WAX M, KAILATH T. On spatial smoothing for direction of arrival estimation of coherent signals[J]. IEEE Trans. on ASSP,1985,33(4):806-811.
  • 8QI Chong-ying, WANG Yong-liang, ZHANG Yong-shun, et al. Spatial difference smoothing for DOA estimation of coherent signals[J]. IEEE Signal Processing Letters, 2005,12 (11 ) : 800-802.
  • 9A.B. Gershman, M.G. Amin. Wideband Direction of Arrival Estimation of Multiple Chirp Signals Using Spatial Time-frequency Distributions [J]. IEEE Signal Processing Lett., 2000, 7(6):152-155.
  • 10H. Wang, M. Kaveh. Coherent Signal-subspace Processing for the Setection and Estimation of Angles of Arrival of Multiple Wideband Sources [J]. IEEE Trans. ASSP,1985, 33(8): 823-831.

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电声技术
2003年 第10期

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