基于共轭虚拟阵列的稳健波束形成方法

针对提高阵列天线波束性能问题,本文提出了基于共轭虚拟阵列的信号导向矢量扩展方法.利用共轭虚拟阵元扩展阵列,增大了阵列孔径却不改变实际阵元数,降低了副瓣电平并且不会增加天线制造成本.在虚拟阵列的基础上对信号导向矢量进行扩展,使阵列波束形成效果更加稳健.本文通过在有无干扰以及存在幅度和相位误差情况下对11个阵元阵列天线进行...

Robust Beam-Forming Method Based on Conjugate Virtual Array

In order to improve the performance of antenna array beam-pattern,this paper proposes a method of signal steering expansion based on conjugate virtual array.Conjugated virtual array elements are used to expand the array and the array aperture is increased without changing the actual number of array elements.The side-lobe level is reduced while the manufacturing cost of the antenna is not increased.The signal steering vector is extended on the basis of the virtual array to make the array beam-forming effect more robust.In the case of amplitude and phase errors existing,11 array antennas are simulated with and without the interference.The effectiveness of the above method is verified by comparing the simulation results of the original array beam-pattern,the virtual array beam-pattern and the beam-pattern after expanding the steering vector.