基于四阶累积量MUSIC算法的飞行器姿态估计  

Aircraft attitude estimation based on the fourthorder cumulant MUSIC algorithm

作　　者：万思钰 陈广东 韩玉洁 刘琨 刘耀辉 WAN Siyu;CHEN Guangdong;HAN Yujie;LIU Kun;LIU Yaohui(Department of Electronic Information Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China;Research Institute of UAV,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China)

机构地区：[1]南京航空航天大学电子信息工程学院,江苏南京210016 [2]南京航空航天大学无人机研究院,江苏南京210016

出　　处：《电子设计工程》2021年第22期134-138,143,共6页Electronic Design Engineering

摘　　要：传统方式通常选用惯导或陀螺仪获取飞行器姿态,数据采集过程易受大加速度或磁场干扰且获取的姿态精度低,针对该问题,文中采用四阶累积量MUSIC算法估计飞行器姿态。以GPS信号作为信号源,波结构向量作为参照物,将3个缺损电磁矢量传感器安装在飞行器机身上,各个传感器异步接收GPS信号,建立传感器阵列导向矢量,采用四阶累积量MUSIC算法构建空间谱函数对谱函数进行谱峰搜索,获得飞行器的3个姿态参数。实验结果表明,利用该算法进行飞行器姿态估计的误差小于1°,高于惯导或陀螺仪姿态估计精度,满足航空航天飞行器的姿态估计要求。Traditional methods usually use inertial navigation or gyroscope to obtain the attitude of the aircraft.The data acquisition process is susceptible to large acceleration or magnetic field interference and the acquired attitude accuracy is low.To solve this problem,this paper uses the fourthorder cumulant MUSIC algorithm to estimate the attitude of the aircraft.Use GPS signal as the signal source and wave structure vector as the reference object.Three defective electromagnetic vector sensors are installed on the aircraft fuselage and each sensor asynchronously receives GPS signals.establishes the sensor array steering vector and uses the fourthorder cumulant MUSIC algorithm to construct the space spectral function.Searche the spectral peaks of spectral functions to obtain three attitude parameters of the aircraft.Experimental results show that the error of aircraft attitude estimation using this algorithm is less than 1°,which is higher than the accuracy of inertial navigation or gyroscope attitude estimation and meets the attitude estimation requirements of aerospace vehicles.

关 键 词：缺损电磁矢量传感器 导向矢量 四阶累积量 谱峰搜索 姿态估计 

分 类 号：TN911.7[电子电信—通信与信息系统]