Mainlobe interference suppression and beam pattern optimization methods

doi:10.19682/j.cnki.1005-8885.2022.0024

中国邮电高校学报(英文) ›› 2023, Vol. 30 ›› Issue (2): 1-7.doi: 10.19682/j.cnki.1005-8885.2022.0024

• Wireless • 下一篇

Mainlobe interference suppression and beam pattern optimization methods

杜晓娟,田斌

西安电子科技大学

收稿日期:2022-03-07 修回日期:2022-06-21 出版日期:2023-04-30 发布日期:2023-04-27
通讯作者: 田斌 E-mail:btian@xidian.edu.cn

Mainlobe interference suppression and beam pattern optimization methods

^{Du Xiaojuan,Tian Bin}

1.
2. 西安电子科技大学

Received:2022-03-07 Revised:2022-06-21 Online:2023-04-30 Published:2023-04-27
Contact: Bin Tian E-mail:btian@xidian.edu.cn

摘要/Abstract

摘要：

When the power of the mainlobe interference received by the receiver is at the same level as the power of the sidelobe interference power, the traditional eigen-projection interference suppression method has the problems of severe beam deformation and peak shift. Aiming at these problems, a beam pattern optimization method (BPOM) was proposed, which can suppress the interference well even when the mainlobe interference power is approximately equal to the sidelobe interference power. In the method, the mainlobe interference eigenvectors are firstly determined according to the correlation criterion. Then through the eigenvalue comparison, the sidelobe interference eigenvectors whose eigenvalues are approximately equal to the mainlobe interference eigenvalues are judged. After that, a projection matrix is constructed to filter out the mainlobe and sidelobe interference. Finally, the covariance matrix is reconstructed and the weight vector for beamforming is obtained. Simulation shows that BPOM has a better output performance than the existing algorithms in case that the power of the mainlobe interference is close to that of the sidelobe interference.

关键词: mainlobe interference | eigen-projection| adaptive beamforming (ABF)

Abstract:

Key words: mainlobe interference | eigen-projection| adaptive beamforming (ABF)

Du Xiaojuan, Tian Bin. Mainlobe interference suppression and beam pattern optimization methods[J]. The Journal of China Universities of Posts and Telecommunications, 2023, 30(2): 1-7.

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Mainlobe interference suppression and beam pattern optimization methods

Mainlobe interference suppression and beam pattern optimization methods

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