| 一种新的非对称分布源模型及方位估计 |
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| 引用本文： | 石秀民,刘志文,王媛媛. 一种新的非对称分布源模型及方位估计[J]. 北京理工大学学报, 2012, 32(6): 617-620,640 |
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| 作者姓名： | 石秀民 刘志文 王媛媛 |
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| 作者单位： | 北京理工大学信息与电子学院 北京100081;北京理工大学信息与电子学院 北京100081;北京理工大学信息与电子学院 北京100081 |
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| 基金项目： | 国家自然科学基金资助项目(60736006,61072098) |
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| 摘 要： | 提出了一种空间非对称分布源信号模型和参数估计方法.利用多种连续分布函数,采用空间分段的方式描述相干分布源的角信号密度和非相关分布源的角功率密度,从而更加符合实际分布源的非对称特性.将DSPE方法推广到分段非对称分布源模型中,通过对分段非对称的相干和非相关分布源的计算机仿真,与对称高斯模型的对比结果验证了给出模型的有效性和估计算法的鲁棒性.
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| 关 键 词： | 非对称分布源 波达方向估计 相干分布源 非相关分布源 |
| 收稿时间： | 2011-12-28 |
A New Non-Symmetric Distributed Source Model and Direction-of-Arrival Estimation |
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| SHI Xiu-min,LIU Zhi-wen and WANG Yuan-yuan. A New Non-Symmetric Distributed Source Model and Direction-of-Arrival Estimation[J]. Journal of Beijing Institute of Technology(Natural Science Edition), 2012, 32(6): 617-620,640 |
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| Authors: | SHI Xiu-min LIU Zhi-wen WANG Yuan-yuan |
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| Affiliation: | School of Information and Electronics, Beijing Institute of Technology, Beijing 100081, China;School of Information and Electronics, Beijing Institute of Technology, Beijing 100081, China;School of Information and Electronics, Beijing Institute of Technology, Beijing 100081, China |
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| Abstract: | A new model for spatially non-symmetric distributed sources and parameter estimation algorithm is proposed. It divides practical spatial distribution into several successive phases, which is depicted with different continuum distribution functions to angular signal density of coherent distributed (CD) sources and angular power density of un-correlative distributed (UD) sources. The non-symmetric distribution practical scenario could be responded effectively with the new model. Estimation algorithm DSPE is extended to the new model for spatially non-symmetric distributed sources. Simulation has been done to compare the new model with symmetric distribution Gaussian model to CD and UD sources. The results have verified the effectiveness of the proposed model and robustness of the estimation algorithm. |
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| Keywords: | non-symmetric distributed source direction-of-arrival estimation coherent distributed sources un-correlatively distributed sources |
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