霍夫-迭代傅里叶变换的盲波束形成算法  

Blind Beamforming Algorithm Based on Hough-IterativeFourier Transform

作　　者：刘骐玮 刘锡 牛卫秦 司振飞 LIU Qiwei;LIU Xi;NIU Weiqin;SI Zhenfei(No.32033 Unit of PLA,Haikou 571100,China)

机构地区：[1]中国人民解放军32033部队,海口571100

出　　处：《电光与控制》2020年第7期26-30,35,共6页Electronics Optics & Control

摘　　要：针对现有的盲波束形成算法适应性较差,多目标分析时采用级联模式存在结构复杂的问题,采用并联模式存在稳健性较差的问题和采用时频分析时存在导向矢量估计较难的问题,提出一种基于霍夫-迭代傅里叶变换的多目标盲波束形成算法。该算法首先通过短时傅里叶变换和霍夫变换解决导向矢量的估计问题,然后通过设计波束图投影算子控制副瓣电平和过渡带以实现对波束的控制,最后输出多目标盲波束。仿真实验分析表明,该算法无需求逆,计算量较小,可以根据实际需要灵活设计旁瓣和零陷参数,输出性能稳定。The current blind beamforming algorithms have poor adaptability.When used in multi-objective analysis the cascading mode has a complex structure the parallel mode has poor robustness and the time-frequency analysis has difficulty in estimating the steering vector.In this paper a multi-objective blind beamforming algorithm is proposed based on the Hough-Iterative Fourier Transform(HIFT).The algorithm firstly solves the estimation problem of the steering vector by the short-time Fourier transform and the Hough transform then implements the waveform control by controlling the side lobe level and the transitional zone through the design of a beam pattern projection operator.Finally the parallel output of the blind beam of multiple targets is obtained.The experimental analysis results show that:(1)This algorithm is different from most of the existed beamforming algorithms and has no need for inverse and small calculation cost;and (2)The side lobe and other parameters can be designed flexibly according to the actual situation and the beam output performance is stable.

关 键 词：盲波束形成算法 霍夫变换 迭代傅里叶变换 导向矢量估计 时频分析 

分 类 号：TN911.7[电子电信—通信与信息系统]