| 基于正交投影变换的弱信号波达方向估计 |
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| 引用本文： | 姚山峰,同武勤,曾安军. 基于正交投影变换的弱信号波达方向估计[J]. 现代雷达, 2011, 33(1) |
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| 作者姓名： | 姚山峰 同武勤 曾安军 |
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| 作者单位： | 西南电子电信技术研究所,成都,610041 |
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| 摘 要： | 提出了一种基于强信号阵列流形矩阵的正交投影变换的弱信号波达方向估计算法,该算法通过构造已知强信号阵列流形矩阵的正交投影矩阵,对阵列接收的数据矢量进行预变换,抑制强信号对弱信号波达方向估计的影响。文中算法只需对数据矢量进行正交投影变换,复杂度低,运算量小。将MUSIC算法、JJM算法和文中算法进行了比较,结果表明文中算法在存在多个强信号条件下能够有效估计多个弱信号的波达方向。
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| 关 键 词： | 正交投影变换 波达方向 空间谱 |
DOA Estimation of Weak Signal Based on Orthogonal Projection Transform |
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| YAO Shan-feng,TONG Wu-qin,ZENG An-jun. DOA Estimation of Weak Signal Based on Orthogonal Projection Transform[J]. Modern Radar, 2011, 33(1) |
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| Authors: | YAO Shan-feng TONG Wu-qin ZENG An-jun |
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| Affiliation: | YAO Shan-feng,TONG Wu-qin,ZENG An-jun(Southwest Electronics and Telecommunication Technology Research Institute,Chengdu 610041,China) |
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| Abstract: | A modified DOA estimation algorithm for weak signal in the presence of strong jamming/signal is proposed.The algorithm is based on orthogonal projection transform of the strong signal array.Through the construction of orthogonal projection matrix of strong signal array and the pre-processing of received array data vector,the influences of the strong signal to DOA estimation is suppressed.The proposed algorithm has low complexity and small computation compared with MUSIC and JJM algorithms and can effectivel... |
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| Keywords: | orthogonal projection DOA spatial spectrum |
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