摘要
针对在原有迭代FFT稀疏阵列综合方法中,其迭代过程容易陷于死循环而必须通过多次重新随机初始化的问题,提出一种改进的迭代FFT稀疏阵列综合方法。该方法具有两层循环迭代,即在原有的迭代FFT方法基础上,增加了内层循环迭代,使得阵因子在满足副瓣约束之后再进行激励大小排序并进行阵列稀疏处理,避免了原有迭代FFT方法容易陷于局部死循环的问题。仿真结果表明,改进的方法比原有的迭代FFT方法可以获得具有更低副瓣电平的平面稀疏薄阵综合结果。
In the original iterative FFT array thinning synthesis, the whole iterative process is easy to be trapped in a dead loop. Consequently this thinning array method has to reckon on a large number of repeated random initializations. To overcome this problem, in this paper an improved iterative FFT synthesis method is proposed for large-scale planar thinned arrays. The proposed method has two layers of iterations： the outer and inner layer iteretions, and the additional inner layer iteration is used to make the array factor satisfied within the specified sidelobe level requirement with significant adjustment of element excitations before the thinning array processing is performed. The possibility of being trapped is redllced in a dead loop. Simulation results show that the improved method can obtain much lower than the one obtained by the original a sparse planar array with the sidelobe level iterative FFT method.
出处
《电子信息对抗技术》
2018年第1期54-59,共6页
Electronic Information Warfare Technology
