东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2011, Vol. 32 ›› Issue (10): 1386-1389.DOI: -

• 论著 • 上一篇    下一篇

基于半定规划的零陷控制方法

刘福来;孙长银;汪晋宽;   

  1. 东北大学秦皇岛分校电子信息系;
  • 收稿日期:2013-06-19 修回日期:2013-06-19 发布日期:2013-04-04
  • 通讯作者: -
  • 作者简介:-
  • 基金资助:
    中央高校基本科研业务费专项资金资助项目(N100423001);;

Nulls control method based on semidefinite programming

Liu, Fu-Lai (1); Sun, Chang-Yin (1); Wang, Jin-Kuan (1)   

  1. (1) Department of Electronic Information, Northeastern University at Qinhuangdao, Qinhuangdao 066004, China
  • Received:2013-06-19 Revised:2013-06-19 Published:2013-04-04
  • Contact: Liu, F.-L.
  • About author:-
  • Supported by:
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摘要： 自适应波束形成算法能够将零陷自动对准干扰方向,但在干扰快速移动或天线平台出现震动等情况下,由于干扰位置的扰动而使得自适应权和数据失配.针对上述问题,提出了一种基于半定规划的对干扰源零陷展宽方法,该方法通过对干扰源的波达方向附近范围内的方向向量的约束,来展宽干扰源的零陷范围.该方法能够有效地提高系统的鲁棒性能,使得干扰和噪声的功率输出最小,保证对干扰源的抑制能力.仿真结果验证了算法的有效性.

关键词: 零陷展宽, 自适应波束形成, 半定规划, 无畸变响应

Abstract: The conventional adaptive beamforming algorithm can aim at the direction-of-arrival of jammer automatically. However when the antenna platform vibrates or the interference moves quickly, the mismatching between adaptive weight and data occurs due to the perturbation of the interference location. To solve the problems, a nulls control method based on semidefinite programming was presented to widen nulls of the adaptive antenna array. The method provides an improved robustness against the interference angle shaking and suppresses the interference signals and minimizes the mean output array SINR. Simulation results demonstrate its validity.

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