影响阵列波束形成的几个相关问题的研究

Several Relative Problems Investigation on Which Influenced the Array Beam Forming

论文以空间域波束形成的理论和方法为依据,运用计算机仿真的方法,详细研究了直线阵的波束形成情况以及非等间距阵元、入射波角度变化、入射波频率变化、信噪比变化等因素对波束形成结果的影响。研究结果表明当入射波垂直入射时波束形成特性最好;随着信噪比的减小,阵列的波束形成性能变差。

Beam forming of line array was investigated by computer simulation based on the theories and methods of space beam forming. The changes of incident wave angle,incident wave frequency,signal to noise ratio and the distance between array elements is different were studied in order to obtain the influences on the results of the beam forming. It was found that the properties of beam forming are best when the incident wave is perpendicular to the line array. The properties of beam forming will become worse with the decreasing of the signal to noise ratio.