基于自适应环路滤波的相控阵导引头捷联解耦方法  

Strapdown decoupling method for phased array seeker based on adaptive loop filter

作　　者：蒋兵兵[1,2] 盛卫星 张仁李[1] 韩玉兵[1] 马晓峰[1] JIANG Bingbing;SHENG Weixing;ZHANG Renli;HAN Yubing;MA Xiaofeng(School of Electronic and Optical Engineering, Nanjing University of Science and Technology,Nanjing 210094, China;Shanghai Radio Equipment Research Institute, Shanghai 200090, China)

机构地区：[1]南京理工大学电子工程与光电技术学院,江苏南京210094 [2]上海无线电设备研究所,上海200090

出　　处：《系统工程与电子技术》2018年第4期845-854,共10页Systems Engineering and Electronics

基　　金：国家自然科学基金(61401207;61471196);江苏省自然科学基金(BK20140793)资助课题

摘　　要：针对相控阵导引头中波束指向受弹体扰动影响的问题,设计了基于环路滤波的捷联解耦方法(strapdown decoupling method based on loop filter,SDMLF)。此方法将补偿后波束指向与初始波束指向的差值送入环路滤波器,利用指向误差滤波值修正补偿后的波束指向,如此构成环路,完成对被扰动波束指向的闭环控制。为提高SDMLF对更多弹体扰动场景的适用性及解耦性能,在SDMLF中增加对环路滤波器中等效环路噪声带宽的自适应计算,得到了基于自适应环路滤波的捷联解耦方法,增加了所设计解耦环路的可靠性。计算机仿真与半实物系统实测结果验证了所提解耦方法的正确性及有效性。To solve the problem of beam pointing affected by disturbance of the missile body in a phased array seeker,a novel method called strapdown decoupling method based on loop filter(SDMLF)is designed.In this method,the difference between the compensated beam direction and the initial beam direction is sent into loop filter.Then,the compensated beam pointing is modified by the filtered beam pointing error.The disturbed beam direction is controlled for close-loop eventually.To improve the applicability and decoupling performance of SDMLF,the adaptive calculation of the equivalent loop noise bandwidth of LF is added.Hence,an improved method based on SDMLF called strapdown decoupling method based on adaptive loop filter is achieved.The reliability of the designed loop in this study is enhanced.Computer simulations and experiments in semi-physical simulation system highlight the correctness and effectiveness of the proposed method.

关 键 词：相控阵导引头 捷联解耦 姿态解算 角度补偿 环路滤波 

分 类 号：TJ765.3[兵器科学与技术—武器系统与运用工程]