卫星通信DBF天线快速宽零陷波束赋形算法

Fast Wide Null Beamforming Algorithm for the Satellite Communication DBF Antenna

该文提出了一种新型快速宽零陷波束赋形方法,基于变步长爬山算法,卫星通信DBF天线在多个给定卫星方位上分别形成了高增益和零陷波束,在满足所需高增益卫星通信链路的同时在其它链路上实现了信号抑制。该算法具有速度快、零陷宽且深等优点,试验结果证明了算法的有效性。天线能够主动选择目标卫星进行通信并抑制其它卫星信号,适宜安装在车辆、舰船、无人机等移动工作平台。

A novel fast wide null beamforming method for the satellite communication DBF antenna is proposed in this paper.Based on the variable step hill-climbing algorithm,the beam with high-gain and null beam is obtained in the desired satellite directions,respectively,which makes it possible to communicate with one satellite while depress the signals from other satellites.The fast algorithm with wide and depth null is validated by the simulation and measurement results.The DBF antenna can initiatively choose the communication satellite and reject other signals from other satellites,and it is suitable for mobile work platforms,such as vehicle,ship,unmanned aerial vehicle,and so on.