摘要
数字波束形成技术充分利用了阵列天线所检测到的空间信息,可以获得超分辨率和低副瓣的性能、实现波束扫描和波束赋形等。提出一种基于线性约束最小方差波束形成算法的方向图综合算法,算法通过迭代运算,能够获得需要的方向图形状。算法仿真以降低由24个天线单元组成的均匀圆阵的方向图副瓣为例,通过3次迭代运算,将副瓣电平降至-40dB左右,满足了工程需要,说明算法是有效、可行的。
DBF technology sufficiently utilizes the space information detected by the antenna array, achieving super-resolution, ultra-low side lobe, beam scanning and pattern synthesis. The paper proposes an algorithm of pattern synthesis based on LCMV algorithm. The algorithm is applied to an array composed of 24 antennas to reduce the side lobe of the pattern. The algorithm uses three times of iterative operations to reduce the side lobe to - 40dB, meeting the requirement of the project. The simulation shows the effectiveness and practicability of the algorithm.
出处
《无线电工程》
2008年第10期23-25,共3页
Radio Engineering
关键词
波束形成
方向图
阵列
综合
beam forming
pattern
array
synthesis
