阵元信号相幅非一致性对波束形成的影响

The Influence Caused by the Disagreement among the Amplitude-Phase Signals in Different Elements on Beam-Forming

在波束形成技术中,由于各输入通道相幅的不一致性和阵元位置的误差,而将影响波束形成性能.本文以小型舷侧阵为研究对象,首先介绍了含有误差分量的波束模型,并推导了含有误差分量的波束输出能量模型.然后分别从阵元的相位误差、幅度误差和位置误差三个方面着手,理论分析和计算机仿真相结合,详细介绍了它们对波束形成的影响,对工程应用具有现实的指导意义.

In beam-forming technology, the performance of beam-forming is influenced by the variance of phase and amplitude between each input channel and the error of element position. Taking the smallscale flank-array as the research object, this paper established the relation between the beam output energy model with error and the theoretic beam output energy model. By combining the theoretical analysis with the computer simulation, the author analyzed the effect of the phase error, amplitude error and the position error of element signal on the beam-forming.