| 基于四阶累积量的近场源时-空域三维参数估计法 |
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| 引用本文： | 王波,王树勋. 基于四阶累积量的近场源时-空域三维参数估计法[J]. 吉林大学学报(信息科学版), 2005, 23(3): 225-231 |
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| 作者姓名： | 王波 王树勋 |
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| 作者单位： | 吉林大学通信工程学院,长春,130025;吉林大学通信工程学院,长春,130025 |
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| 摘 要： | 研究了近场源的频率-方向角-距离的三维参数估计问题,并针对已有方法估计精度较低的问题,提出了一种利用四阶累积量和信号的空域和时域信息估计信源的频率-方向角-距离参数的方法.该方法扩展了阵列的孔径,提高了算法的估计性能.仿真实验证明,当信噪比为0时,该算法仍然能够正确估计信源的参数.
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| 关 键 词： | 近场源定位 时空矩阵 频率估计 方向角估计 距离估计 |
| 文章编号： | 1671-5896(2005)03-0225-07 |
| 修稿时间： | 2004-08-09 |
Time-Spatial 3-D Parameter-Estimation Method of Near-Field Sources Based on Fourth-Order Cumulant |
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| WANG Bo,WANG Shu-xun. Time-Spatial 3-D Parameter-Estimation Method of Near-Field Sources Based on Fourth-Order Cumulant[J]. Journal of Jilin University:Information Sci Ed, 2005, 23(3): 225-231 |
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| Authors: | WANG Bo WANG Shu-xun |
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| Abstract: | The frequency-bearing-range estimation of near-field sources is studied in this paper. A method for joint frequency-bearing-range estimation by using four-order cumulant and exploiting signal space-domain and time-domain's information is presented. Because the method extends array aperture, it enhances estimation performance of the algorithm. Some simulation examples show that the parameters of sources can be estimated correctly even when the SNR(Signal-to-Noise Ratio) is 0. |
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| Keywords: | near-field sources localization time-space matrix frequency estimate bearing estimate range estimate |
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