液晶相控阵指向精度影响因素分析及优化方法  

Analysis of Factors Affecting the Steering Accuracy of Liquid Crystal Phased Array and Optimization Method

作　　者：范佳鑫 王春阳 张宁[1] FAN Jiaxin;WANG Chunyang;ZHANG Ning(School of Electronic and Information Engineering,Changchun University of Science and Technology,Changchun 130022;School of Armament Science and Technology,Xi'an Technological University,Xi'an 710021)

机构地区：[1]长春理工大学电子信息工程学院,长春130022 [2]西安工业大学兵器科学与技术学院,西安710021

出　　处：《长春理工大学学报（自然科学版）》2022年第2期65-73,共9页Journal of Changchun University of Science and Technology(Natural Science Edition)

基　　金：装备预研领域基金重点项目(61404150201)。

摘　　要：在液晶相控阵波束偏转技术中指向精度是主要性能之一,受到各种因素影响,导致指向精度降低。分析了影响液晶相控阵指向精度的几个关键因素,并提出一种优化方法。该方法采用粒子群算法,选取归一化精度误差为优化对象,搜寻最优波控电压,从而降低波束的角度偏转误差,提高波束指向精度。仿真结果显示,优化后的归一化精度误差相比优化前的归一化精度误差下降了三个数量级,明显地降低了角度的偏转误差,提高了波束的指向精度,优化效果显著。Steering accuracy is one of the main performances in liquid crystal phased array beam deflection technology,which is affected by various factors and leads to reduced pointing accuracy. Several key factors affecting the pointing accuracy of liquid crystal phased array are analyzed;and an optimization method is proposed. The particle swarm algorithm is adopted in this method;the normalized accuracy error is selected as the optimization object;the optimal wave control voltage is found;thereby the angle deflection error of the beam is reduced;and the beam steering accuracy is improved. The simulation results show that the normalized accuracy error after optimization is three orders of magnitude lower than the normalized accuracy error before optimization,which significantly reduces the deflection error of the angle,improves the pointing accuracy of the beam,and the optimization effect is significant.

关 键 词：液晶相控阵 指向精度 影响因素分析 粒子群算法 

分 类 号：TN958.98[电子电信—信号与信息处理]