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非均匀线阵的低旁瓣波束形成算法研究

发表时间:2016-08-31  浏览量:1720  下载量:809
全部作者: 廖艳苹,孙钰塽
作者单位: 哈尔滨工程大学信息与通信工程学院
摘 要: 以非均匀线阵为例进行仿真实验,首先采用凹槽噪声法降低旁瓣电平,应用最大信干噪比(signal to interference and noise ratio,SINR)准则,在旁瓣区域施加大量的干扰,并不断地修改干扰功率,从而使方向图具有较低的旁瓣电平。其次采用优化理论方法,通过增加旁瓣约束条件来降低旁瓣电平。并将凹槽法与凸优化算法进行比较,得出凸优化算法更优的结论,同时对系统的稳健性进行研究。最后提出一种新的混合算法,将凹槽噪声法与凸优化算法相结合,能够进一步降低旁瓣的电平值,并讨论了算法的稳健性。
关 键 词: 通信技术;阵列信号;波束形成;低旁瓣;凹槽噪声;凸优化
Title: Low sidelobe beamforming algorithm on nonuniform linear array
Author: LIAO Yanping, SUN Yushuang
Organization: College of Information and Communication Engineering, Harbin Engineering University, Harbin 150001, China
Abstract: Simulation experiments are carried out on the example of nonuniform linear array. In the first part, the notch noise-field method is used to reduce the sidelobe. Based on the maximum signal to interference and noise ratio (SINR) criterion, a large amount of interference is applied to the field of the sidelobe, and the power of the interference is corrected to obtain the pattern with the uniform low sidelobe. In the second part, the optimization theory is used to reduce the sidelobe by adding some sidelobe constraints. By comparing the notch noise-field method with the convex optimization algorithm, the conclusion is drawn that the second one is better. Also, the robustness is studied. At last, a new hybrid algorithm is proposed, which can further reduce the sidelobe by combining the notch noise-field method with the convex optimization, and its robustness is discussed.
Key words: communication technology; array signal; beamforming; low sidelobe; notch noise-field; convex optimization
发表期数: 2016年8月第16期
引用格式: 廖艳苹,孙钰塽. 非均匀线阵的低旁瓣波束形成算法研究[J]. 中国科技论文在线精品论文,2016,9(16):1681-1688.
 
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