| 循环MUSIC算法的误差分析及改进 |
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| 引用本文： | 周陬,王宏远.循环MUSIC算法的误差分析及改进[J].华中科技大学学报(自然科学版),2007,35(7):22-26. |
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| 作者姓名： | 周陬 王宏远 |
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| 作者单位： | 华中科技大学,电子与信息工程系,湖北,武汉,430074 |
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| 摘 要： | 通过分析循环MUSIC算法信号模型的误差,考查载波频率、信号带宽、循环频率、阵元间距和波达方向(DOA)等因素对DOA估计性能的影响,根据分析结果提出在计算导向矢量时选择最适当的频率以减小偏差,改进估计性能.仿真结果表明上述与信号模型相关的因素对DOA估计的精度有一定影响,与理论分析一致,且证实改进算法有效.
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| 关 键 词： | 波达方向估计 循环平稳 循环MUSIC 误差分析 循环频率 MUSIC algorithm 改进算法 误差分析及改进 cyclic improvement analysis 理论 精度 估计性能 相关 仿真结果 小偏差 选择 导向矢量 计算 影响 因素 波达方向 阵元间距 |
| 文章编号： | 1671-4512（2007）07-0022-05 |
| 修稿时间： | 2006-07-04 |
Error analysis and improvement of cyclic MUSIC algorithm |
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| Zhou Zou,Wang Hongyuan.Error analysis and improvement of cyclic MUSIC algorithm[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,2007,35(7):22-26. |
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| Authors: | Zhou Zou Wang Hongyuan |
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| Institution: | Department of Electronics and Information Engineering, of Science and Technology, Wuhan 430074, Huazhong University China |
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| Abstract: | This paper analyzed the bias of cyclic MUSIC algorithms,explored the effects of carrier frequency,signal bandwidth,cyclic frequency,sensors distance,and direction-of-arrival(DOA) angle on the performance of DOA estimation,proposes an improved cyclic MUSIC algorithm based on the result of the analysis,and reduces the bias substantially by properly choosing the frequency for evaluating the steering vector.Simulation results show the exactitude of the error analysis and the effectiveness of the improved algorithms. |
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| Keywords: | direction-of-arrival(DOA) estimation cyclostationarity cyclic MUSIC error analysis |
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