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| Ad Hoc网络移动节点的一种快速DOA估计算法的研究 | |
| 引用本文： | 朱庆华,秦卫平,郭艳.Ad Hoc网络移动节点的一种快速DOA估计算法的研究[J].南京邮电大学学报(自然科学版),2007,27(4):49-53. |
| 作者姓名： | 朱庆华 秦卫平 郭艳 |
| 作者单位： | 1. 南京邮电大学,通信与信息工程学院,江苏,南京,210003 2. 南京邮电大学,数理学院,江苏,南京,210003 3. 解放军理工大学,理学院,江苏,南京,210007 |
| 摘 要： | 研究了Ad Hoc网络中移动节点的一种快速DOA估计算法,此算法并非独立估计全部时刻的DOA,而利用曲线拟合方法,从前面时刻的DOA拟合成的曲线来获得后面时刻的DOA信息,因此节省了计算时间.算法中曲线拟合的精度决定了DOA估计的准确度和分辨率,采用了代数多项式、拉格朗日插值法和最小二乘法,对3种曲线拟合方法进行了误差分析.计算机仿真结果表明,最小二乘法的精度比较高.所得出的结论对这种快速算法在Ad Hoc网络中移动节点的估计有一定的参考价值. |
| 关 键 词： | Ad Hoc网络 波达角 多重信号分类法 均匀圆阵 网络 移动节点 快速算法 估计算法 研究 Ad Hoc Network Nodes Moving Estimation Algorithm Fast 价值 精度比较 仿真结果 计算机 误差分析 乘法 最小 拉格朗日插值法 代数多项式 分辨率 |
| 文章编号： | 1673-5439（2007）04-0049-05 |
| 收稿时间： | 2006-09-08 |
| 修稿时间： | 2006-09-08 |
Research on A Fast DOA Estimation Algorithm of Moving Nodes in Ad Hoc Network |
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| ZHU Qing-hua,QIN Wei-ping,GUO Yan.Research on A Fast DOA Estimation Algorithm of Moving Nodes in Ad Hoc Network[J].Journal of Nanjing University of Posts and Telecommunications,2007,27(4):49-53. | |
| Authors: | ZHU Qing-hua QIN Wei-ping GUO Yan |
| Institution: | 1. College of Communication and Information Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210003, China ;2. College of Mathematics and Physics, Nanjing University of Posts and Telecommunications, Nanjing 210003, China ;3. College of Science, PLA University of Science and Technology, Nanjing 210007, China |
| Abstract: | A fast DOA estimation algorithm of moving nodes in Ad Hoc network has been studied in this paper. Instead of using the independent estimation at different time of conditional DOA algorithms, based on curve fitting the algorithm emploies the curve deriving from the previous DOA to provide the latter information on the DOA of the nodes. The algorithem reduces the computational time. As the accuracy of curve fitting affects DOA estimation, three methods of curve fitting, Algebra polynomial, Lagrange The error analysis shows that the precision of Least Mean interpolating and Least Mean Square are evaluated Square is comparatively higher. The conclusions could be useful for the fast DOA estimation of moving nodes in Ad Hoc network . |
| Keywords: | Ad Hoc network DOA MUSIC Uniform circular array |
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