| 阵列天线DOA跟踪环路鉴别器性能分析 |
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| 引用本文： | 关刚强,李柏渝,聂俊伟,王飞雪.阵列天线DOA跟踪环路鉴别器性能分析[J].系统工程与电子技术,2016,38(5):990. |
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| 作者姓名： | 关刚强 李柏渝 聂俊伟 王飞雪 |
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| 作者单位： | 国防科学技术大学电子科学与工程学院, 湖南 长沙 410073 |
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| 摘 要： | 利用阵列天线波束指向空间相关性的特点,可以构建一个类似于传统锁相环结构的闭合环路以实现对导航信号来波方向(direction of arrival, DOA)的跟踪。DOA跟踪环路中鉴别器的实现方法主要有实部相减相干法、幅值相减归一化法、功率相减归一化法,首先基于波束形成技术建立了阵列天线导航接收机DOA跟踪模型,在此基础上从鉴别器增益、收敛范围和输出噪声方差3个方面对比分析了采用不同角度鉴别器算法的跟踪性能,最后对其进行了仿真验证。
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Performance analysis of discriminators in DOA tracking loop with antenna array |
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| GUAN Gang-qiang,LI Bai-yu,NIE Jun-wei,WANG Fei-xue.Performance analysis of discriminators in DOA tracking loop with antenna array[J].System Engineering and Electronics,2016,38(5):990. |
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| Authors: | GUAN Gang-qiang LI Bai-yu NIE Jun-wei WANG Fei-xue |
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| Institution: | College of Electronic Science and Engineering, National University of Defense Technology, Changsha 410073, China |
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| Abstract: | By using the spatial correlation characteristics of the beam steering vector with antenna array, as similar to the traditional phase lock loop (PLL) a closed loop can be constructed to realize the direction of arrival (DOA) tracking for global navigation satellite system (GNSS) signals by using beamforming. The three most popular implementations of discriminators in the DOA tracking loop are named as the coherent method with real part subtraction, normalization methods with amplitude subtraction and power subtraction. Firstly, a DOA tracking model in the GNSS receiver with antenna array is established by using beamforming, and then the performances of the DOA discriminator are analyzed from three different aspects which are gain, convergence range and noise variance, finally simulation verifications are carried out. |
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