| 一种改进的卫星空时DOA矩阵算法 |
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| 引用本文： | 许培培,龚文斌,余金培,刘会杰.一种改进的卫星空时DOA矩阵算法[J].计算机工程,2010,36(20):268-271. |
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| 作者姓名： | 许培培 龚文斌 余金培 刘会杰 |
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| 作者单位： | 1. 上海微小卫星工程中心,上海,200050;中国科学院上海微系统与信息技术研究所,上海,200050;中国科学院研究生院,北京,100039
2. 上海微小卫星工程中心,上海,200050;中国科学院上海微系统与信息技术研究所,上海,200050 |
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| 摘 要： | 提出一种改进的基于信号空时特征结构的高分辨二维波达方向(DOA)估计方法——时空DOA矩阵方法。该方法在保持原时空DOA矩阵方法无需二维谱峰搜索和参数配对等优点的基础上，通过构造X轴上的平移不变子阵列，产生2个DOA矩阵，利用这2个DOA矩阵的角度兼并曲线的差异，解决了原时空DOA矩阵方法的角度兼并问题。由于2个子阵可以重复利用阵元，该方法基本无冗余阵元和孔径损失。仿真结果证明了该方法的有效性。
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| 关 键 词： | 阵列天线 智能天线 波达方向估计 空时二维处理 |
Improved Satellite Space-time DOA Matrix Algorithm |
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| XU Pei-pei,GONG Wen-bin,YU Jin-pei,LIU Hui-jie.Improved Satellite Space-time DOA Matrix Algorithm[J].Computer Engineering,2010,36(20):268-271. |
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| Authors: | XU Pei-pei GONG Wen-bin YU Jin-pei LIU Hui-jie |
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| Affiliation: | (1. Shanghai Engineering Center for Micro-satellite, Shanghai 200050, China; 2. Shanghai Institute of Micro-system and Information Technology Chinese Academy of Science, Shanghai 200050, China; 3. Graduate School of Chinese Academy of Sciences, Beijing 100039, China) |
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| Abstract: | Based on the space-time eigenstructure of signals, an improved space-time Direction Of Arrival(DOA) estimation matrix method is proposed to estimate the high-resolution 2-D DOA of narrowband signals. The method obtains two DOA matrices through creating another sub array, which is the primary sub array shifted down X axes. Because these two matrices are different in angle ambiguity curves, the method can get accurate DOA; therefore advantages of the traditional space-time DOA matrix method, such as automatic parameter alignment and no need of 2-D search, are still available. Simulation results show that the method is effective. |
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| Keywords: | array antenna smart antenna Direction Of Arrival(DOA) estimation space-time 2-D processing |
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