摘要
在基本的傅里叶变换频率不变波束形成器(frequency invariant beamforming,FIB)的基础上,提出了快速可控零陷低旁瓣宽带FIB优化方法,该方法将固定角度方向图零陷约束和等波纹原型滤波器加入FIB的设计,实现了零陷可控的低旁瓣FIB。同时,还开展了FIB抽头系数的稀疏优化,有效的降低了算法实现的运算量。仿真结果验证了所提的方法在一维均匀线阵和二维均匀面阵上的正确性和有效性。
The constraints of pattern nulling and the prototype equiripple finite impulse response (FIR) are respectively added to the original fourier transform frequency invariant beamforming (FIB) to obtain pattern of wideband FIB with low sidelobe and anti-jamming nulling. The thinned optimization of FIB coefficients is also considered to reduce the calculating complex. The simulation results verify the correctness and effectiveness of the proposed method.
出处
《系统工程与电子技术》
EI
CSCD
北大核心
2016年第6期1243-1249,共7页
Systems Engineering and Electronics
基金
国家自然科学基金(61401207)
上海航天基金重点项目(SAST201437)资助课题
关键词
频率不变波束形成
宽带波束形成
抗干扰零陷
低旁瓣
frequency invariant beamforming (FIB)
wideband beamforming
anti-jamming nulling
low-sidelobe