一种主瓣保形的波束形成新方法

A new beam-forming method of mainlobe shape-preserving

为了保证通信卫星在人为电磁干扰及复杂电磁环境下的正常工作,利用主天线和辅助天线相互配合的思想调整相控阵天线阵元的初始静态权值,通过带有主波束保形的调零算法来对多个干扰实现有效抑制的同时达到波束主瓣保形的目的,即保证在主瓣干扰处准确形成较深的零陷时,主瓣内其他方向上波束方向图与静态方向图尽可能相似。这样可以保证通信时有效地抑制电磁干扰,同时尽量减少对周围服务区域通信质量的影响,并通过仿真验证了这种方法的有效性。

In order to ensure the telecommunication satellites to work well in artificial electromagnetic interference and com-plex electromagnetic environment,a novel beam-nulling method which utilizes cooperation of the main antenna and auxiliary an-tenna to initialize the adaptive weight of phase array antenna,which keeps the shape of the main lobe,is presented in this pa-per to achieve the effective suppression to jamming and main lobe shape-preserving. The beam directional pattern in the other di-rections inside the main lobe and static directional pattern should be made as similar as possible while ensuring the forming of the deep nulling at the interference place of main lobe. In this way,the effective suppression to electromagnetic interference during the communication can be guaranteed while minimizing the impact on the surrounding area communication quality of ser-vice. The effectiveness of the method was demonstrate by simulation.