摘要
基于模态分解思想的波束形成是一种很好的圆环形波束形成方法,为了将其运用到宽带波束形成中,提出了一种逼近期望波束的抗白噪声的稳健宽带波束形成算法。该方法利用模态分解方法设计出模态域的稳健模态系数,根据在不同模态阶数下生成不同波束的情况下,利用二阶锥优化算法在宽带波束性能指标之间获得比阵元域稳健性方法更合理的折衷,从而为设计者根据对波束性能指标需求提供了选择的平台和操作的空间。计算机仿真验证了该方法可以实现我们期望得到的恒定束宽波束图,并且比传统的二阶锥恒定束宽方法有更好的效果。实验也验证了该方法的可行性。
The beamforming method based on mode decomposition is a kind of very good beamforming method for circular sensor arrays, in order to apply it to the broadband beamforming, An against white noise robust beamforming method was proposed to design an expect beam. The method designed the modal domain robust modal coefficient using the model decomposition method to generate different beam under the different mode circumstances, using second-order cone optimization algorithm gain more reasonable compromise than the other methods in the broadband beam performance, The platform of choice and operation of space were provided according to the demand for beam performance indicators for the designers. Computer simulation shows that this method can realize constant beamwidth beam figure, and has a better effect than traditional second-order cone constant beamwidth method. Experiments also verify the feasibility of this method.
出处
《系统仿真学报》
CAS
CSCD
北大核心
2016年第11期2832-2840,共9页
Journal of System Simulation
基金
陕西省教育厅重点实验室科研计划(16JS091)
关键词
模态分解
圆环阵
宽带波束形成
稳健性
二阶锥规划
modal decomposition
circular sensor array
broadband beam forming
robustness
second-order cone optimization
