摘要
当均匀线阵中某些阵元损坏时,该阵元无法接收入射信号,会导致波束形成结果与正常情况出现差别。在不进行加窗处理的情况下,波束方向图变化不大,主瓣幅度稍有减小,主瓣宽度和主副比也略有变化。然而对于锥化波束形成,波瓣的主瓣幅度、主副比和主瓣宽度受到明显影响,且与缺损阵元在线阵中的位置有着紧密的联系,当缺损阵元处于线阵中心时,波瓣性能受到严重影响。讨论了阵元缺损对波束形成的影响,通过比较缺损阵元在不同位置时的锥化波束形成波瓣性能变化,得知阵元离线阵中心越近对波瓣影响越大,因而要优先保证线阵中心阵元完好。
When some array is damaged in uniform linear array,the array canr t receive signal so that lead to difference between beamforming and normal results. Do not add a window in the case-of treatment, little change in the beam pattern, the main valve to reduce the rate slightly, the main lobe width and slightly more than the main deputy change. However, for taperbeam of the formation of main lobe margins,main and main lobe width ratio are influenced obviously,and it has elose contact with defect array in the position of linear array,but when the defect array in the center of linear array,the lobe＇s performance is affected seriously. In this paper, the influence of defect array on the performance of pattern is discussed,and conclude that it is important to remain the intactness of array near to the middle of linear array,especially in the middle of linear array.
出处
《现代电子技术》
2009年第8期106-108,111,共4页
Modern Electronics Technique
