谢菊兰,
何子述,
李会勇
电子科技大学信息与通信工程学院 ??成都 ??611731
基金项目:国家自然科学基金(61871085)，高校基本科研业务费(2672018ZYGX2018J010)
详细信息
作者简介:王旭：男，1987年生，博士生，研究方向为阵列空时信号处理和波束形成以及抗干扰技术
谢菊兰：女，1981年生，副教授，博士，研究方向为数字波束形成和DOA估计
何子述：男，1962年生，教授，博士，研究方向为阵列信号处理、自适应信号处理和MIMO雷达与通信
李会勇：男，1975年生，教授，博士，研究方向为阵列信号处理和自适应信号处理
通讯作者:王旭 alienfrog@163.com
中图分类号:TN911.7计量
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被引次数:0
出版历程
收稿日期:2018-06-04
修回日期:2018-12-03
网络出版日期:2018-12-11
刊出日期:2019-05-01
An Accurate Wideband Beampattern Synthesis Method Based on the Space-frequency Structure and the Space-time Structure Conversion
Xu WANG,,Julan XIE,
Zishu HE,
Huiyong LI
School of Information and Communication Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China
Funds:The National Natural Science Foundation of China (61871085), The Fundamental Research Funds for the Central Universities (2672018ZYGX2018J010)
摘要
摘要:该文提出一种空时结构下的精确宽带波束赋形算法。在空频结构下，对各子带权值进行波束赋形优化。根据权值在满足共轭对称条件下，阵列幅度响应可以转换为线性函数这一原理，将波束赋形转换为凸优化问题。利用内点法得到最优权值后，通过空频结构与空时结构之间的权值转换关系，得到空时结构下的波束权值。该算法能够对宽带波束图进行精确地赋形，同时保证在期望方向上阵列响应具有线性相位特性。仿真结果验证了算法的有效性。
关键词:宽带波束赋形/
空频空时结构转换/
线性相位/
共轭对称权值/
2阶锥规划
Abstract:An accurate wideband beampattern synthesis method based on the space-time structure is proposed. Making use of the property that the magnitude response can be translated into linear function under the condition of conjugate symmetric weights, the beampattern synthesis problem is transformed into the convex optimization problem. The weights of space-time structure can be obtained by utilizing the principle of relationship between the two structures, after the weights of space-frequency structure is calculated by the interior point method. The proposed method can realize the wideband beampattern synthesis accurately, meanwhile ensuring the linear phase characteristic of the array response. Simulation results demonstrate the effectiveness of the proposed method.
Key words:Wideband beampattern synthesis/
Space-frequency structure and space-time structure conversion/
Linear phase/
Conjugate symmetric weights/
Second Order Cone Programming (SOCP)
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