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基于四阶累积量Root-Music的近场信源二维参数估计 被引量：2

Algorithm for 2-D Near-Field Sources Parameter Estimate Based on Fourth-Order Cumulant Root-Music
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摘要 为了对近场信源的距离参数和方向角参数同时进行有效估计,降低算法的计算量,提出了一种基于四阶累积量的Root-Music算法及相应的参数配对方法。该方法无需进行谱峰搜索运算,利用相应的配对程序能够直接得到近场信源的参数值,降低了运算复杂度。仿真实验表明,在估计两个信源参数时,信噪比为0时就能正确分辨方向角和距离参数,信噪比由-5 dB变化到15 dB时,估计参数的均方误差呈下降趋势。 In order to estimate the range and azimuth of near-field sources and decrease computational complexity of the algorithm, a Root-Music method and its assoeiational parameters pairing program are proposed based on fourth-order eumulant. The presented method does not need speetral peak searehing; the sources parameters ean be obtained direetly and has the advantage of low eomputation eost. Some simulation examples indieated that the azimuth angle and the range ean be resolved when SNR （Signal Noise Rate） is zero and MSE （Mean Square Error） is downtrend when SNR ehange from -5 dB to 15 dB.
作者 石宇 王波 王树勋
机构地区 吉林大学通信工程学院
出处 《吉林大学学报（信息科学版）》 CAS 2007年第5期465-470,共6页 Journal of Jilin University（Information Science Edition）
基金 国家自然科学基金资助项目(60272065)
关键词 DOA估计 近场信源定位 四阶累积量 方向角估计 距离估计 direction of arrival （DOA） estimate near-field source localization fourth-order cumulant azimuth estimate range estimate
分类号 TN911.72 [电子电信—通信与信息系统]
  • 相关文献

参考文献15

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二级参考文献13

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共引文献3

同被引文献19

  • 1李晶,莫德举.基于改进时差法的超声流量计[J].中国仪器仪表,2004(12):10-12. 被引量：9
  • 2黄志强,王树勋,王波.基于四阶累积量的近场源三维参数联合估计[J].吉林大学学报（信息科学版）,2006,24(3):225-229. 被引量：4
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引证文献2

二级引证文献4

吉林大学学报（信息科学版）
2007年 第5期

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