| 基于传播算子的二维波达方向估计新算法 |
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| 引用本文： | 苏淑靖,颜景龙,马维贤,曹东杰.基于传播算子的二维波达方向估计新算法[J].北京理工大学学报,2008,28(7):602-605. |
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| 作者姓名： | 苏淑靖 颜景龙 马维贤 曹东杰 |
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| 作者单位： | 北京理工大学,宇航科学技术学院,北京,100081;中国兵器工业系统总体部,北京,100089;北京理工大学,宇航科学技术学院,北京,100081;中北大学,电子与计算机科学技术学院,山西,太原,030051 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 针对目前用旋转不变空间技术(ESPRIT)估计2-D DOA时存在计算量大和需要二维参数配对的问题,提出了把传播算子原理引入ESPRIT算法的新方法,用线性变换代替特征分解求取旋转不变关系矩阵,并且利用估计出的方位角估计俯仰角,大大提高了计算速度,实现了方位角和俯仰角的自动配对.阵列结构设计采用三平行线立体阵,使得阵列对任意方向入射信号都可以正确估计.计算机仿真结果表明,该方法运算速度快,精度高.
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| 关 键 词： | 波达方向 传播算子 ESPRIT算法 参数配对 |
| 收稿时间： | 2007/12/13 0:00:00 |
A New Algorithm for 2-D DOA Estimation Based on Propagator Method |
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| SU Shu-jing,YAN Jing-long,MA Wei-xian and CAO Dong-jie.A New Algorithm for 2-D DOA Estimation Based on Propagator Method[J].Journal of Beijing Institute of Technology(Natural Science Edition),2008,28(7):602-605. |
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| Authors: | SU Shu-jing YAN Jing-long MA Wei-xian and CAO Dong-jie |
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| Institution: | SU Shu-jing1,3,YAN Jing-long1,3,MA Wei-xian1,CAO Dong-jie2 |
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| Abstract: | A new method is presented for reducing the computational load and removing mismatch between the azimuth and elevation angle existing in estimation of subspace rotational in variance technology(ESPRIT) algorithm.Instead of eigen-decomposition,the propagator method is applied to generate rotational invariance matrix,and the elevation angle estimation is derived from the estimated azimuth angle.Thus,the computational load can be decreased greatly,and parameters paired automatically.In addition,a novel three-dimensional array is designed to accurately estimate the source signal from any direction.Simulation results showed that the proposed method is characterized by fast computation speed and high precision. |
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| Keywords: | direction of arrival propagator method estimation of subspace rotational in variance technology(ESPRIT) algorithm pairing of parameters |
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