摘要
与传统阵列相比,共形阵安置更为灵活,应用更为广泛。然而,针对共形阵的方向图综合也更为复杂。传统的方向图综合方法对共形阵并不适用。通过在旁瓣区域施加虚拟干扰能够有效实现共形阵的方向图综合。如何通过迭代过程控制虚拟干扰功率的大小成为该方法的关键。现有的迭代方法一般存在收敛缓慢或计算复杂的问题。本文基于线性约束最小方差准则,提出了一种改进的共形阵方向图综合方法。该方法适用于任意阵型的方向图综合。仿真实验证明,该方法能加快收敛速度,并降低自适应波束形成器对迭代系数的依赖性。
Conformal arrays, with more flexible placement than traditional array, are widely used in many areas. However, pattern synthesis of conformal array is more complex and some traditional pattern syn- thesis methods are not applicable. Applying virtual interference in the region of the side lobe is proved to be feasible. Then the critical issue is to find effective methods to determine the power of virtual interfer- ence in each azimuth through an iterative process. Generally, existing iterative methods have slow convergence rate or heavy computation. An improved method for conformal array pattern synthesis is pro- posed based on linearly constrained minimum variance （LCMV） criterion and the method is applicable to any array placement. Moreover, it can accelerate the convergence rate and reduce the dependence on the iteration coefficient for adaptive beam-formers. Numerical examples are provided to demonstrate the effectiveness of the method.
出处
《数据采集与处理》
CSCD
北大核心
2016年第4期761-766,共6页
Journal of Data Acquisition and Processing
基金
江苏省产学研前瞻性联合研究(BY2012187)资助项目
关键词
共形阵
方向图综合
虚拟干扰
线性约束最小方差
conformal array
pattern synthesis
virtual interference
linearly constrained minimum variance （LCMV）
