| 分析三极子天线导向矢量平凡模糊问题的简便方法 |
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| 引用本文： | 徐友根,刘志文,刘涛.分析三极子天线导向矢量平凡模糊问题的简便方法[J].北京理工大学学报,2004,24(11):986-989. |
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| 作者姓名： | 徐友根 刘志文 刘涛 |
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| 作者单位： | 北京理工大学,信息科学技术学院电子工程系,北京,100081 |
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| 基金项目： | 国家自然科学基金
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北京理工大学校科研和教改项目 |
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| 摘 要： | 研究简化三极子天线导向矢量平凡(秩-1)模糊问题的分析.基于对2个矢量进行相同满秩变换并不改变两者之间的线性无关性,证明了坐标系旋转并不影响导向矢量平凡模糊问题.通过坐标系的旋转,使分析信号入射方向与新坐标系的x轴重合,而潜在模糊信号传播矢量落于相应xy平面内,使三极子天线信号导向矢量即极化-角度域相干结构具有简单形式.理论分析和计算机仿真均表明,利用简便方法得到的平凡模糊发生条件的结论,与基于最小均方误差算法的自适应三极子天线信干比恶化的几种情况完全吻合.
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| 关 键 词： | 三极子天线 极化 秩-1(平凡)模糊 分析 天线 导向矢量 平凡 模糊问题 简便方法 Antenna Structure Coherence 完全 情况 信干比 自适应 误差算法 最小均方 发生条件 利用 算机仿真 理论 简单形 |
| 文章编号： | 1001-0645(2004)11-0986-04 |
| 收稿时间： | 2003/11/21 0:00:00 |
Trivial Ambiguity of Polarization-Angular Coherence Structure of a Tripole Antenna |
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| XU You-gen,LIU Zhi-wen and LIU Tao.Trivial Ambiguity of Polarization-Angular Coherence Structure of a Tripole Antenna[J].Journal of Beijing Institute of Technology(Natural Science Edition),2004,24(11):986-989. |
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| Authors: | XU You-gen LIU Zhi-wen and LIU Tao |
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| Institution: | Department of Electronic Engineering, School of Information Science and Technology, Beijing Institute of Technology, Beijing100081, China;Department of Electronic Engineering, School of Information Science and Technology, Beijing Institute of Technology, Beijing100081, China;Department of Electronic Engineering, School of Information Science and Technology, Beijing Institute of Technology, Beijing100081, China |
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| Abstract: | Shows how to simplify the discussion of the trivial ambiguity (a.k.a. rank-1 ambiguity) problem associated with the polarization-angular coherence structure (PACS) of a tripole antenna by defining a new coordinate system where the two signals of concern both lie in the same coorainate plane, along with a theoretical demonstration indicating that the involved coordinate rotation has no effect on the study of the problem under consideration. The identified situations suffer from the trivial ambiguity are found to be well coincident with that of the performance degradation formerly observed for an adaptive tripole antenna based on the least-mean-square (LMS) criterion. Some representative examples are also given to validate the given analyses. |
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| Keywords: | tripole antenna polarization rank-1 (trivial) ambiguity |
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