基于GPS/地磁组合弹体滚转姿态测量方法  

Method of roll attitude determination based on GPS and magneto-resistive sensor

作　　者：袁丹丹[1] 李新华 易文俊[1] 管军[1] YUAN Dandan;LI Xinhua;YI Wenjun;GUAN Jun(National Key Laboratory of Transient Physics,Nanjing University of Science and Technology,Nanjing 210094,China;Northwest Industrial Group Company Limited,Xi’an 710043,China)

机构地区：[1]南京理工大学瞬态物理国家重点实验室,江苏南京210094 [2]西北工业集团有限公司,陕西西安710043

出　　处：《系统工程与电子技术》2018年第11期2512-2518,共7页Systems Engineering and Electronics

基　　金：国家自然科学基金(11472136)资助课题

摘　　要：在全球定位系统(global positioning system,GPS)/地磁组合测量方法的基础上,对组合测量过程中存在地磁测量盲区问题进行了研究分析。针对磁阻传感器在测量弹丸滚转姿态时因有可能出现的磁探测盲区而造成解算结果不准确的情况,提出了利用弹丸的速度倾斜角代替滚转姿态输出的思路,建立了基于GPS弹丸速度倾斜角的解算模型,根据GPS的量测输出信息,对弹丸的速度倾斜角进行测量解算,并对采用弹丸的速度倾斜角代替滚转姿态输出的可行性进行了理论验证。通过数值仿真计算验证了该解算方法的正确性,有效弥补了磁探测盲区出现时组合测量解算误差较大或无法解算的不足,在一定程度上提高了GPS/地磁组合弹体滚转姿态解算的精度。Based on the measurement method developed to integrate the magneto-resistive sensor and global positioning system(GPS),the blind spot of magnetic measurement during the combined measurement is analyzed.In the measurement of projectile roll attitude,the possible blind spot of magnetic measurement exists,and then the roll attitude calculation becomes inaccurate.Aiming to solve this problem,an idea of using the roll angle to the velocity vector instead of the roll attitude output is put forward,and a model is proposed to calculate the roll angle to the velocity vector axis according to the GPS output,which is used as compensation to the inaccurate roll attitude.Moreover,the feasibility of the compensation is demonstrated.The proposed model is verified using numerical simulations,and can overcome the blind area drawback of the magneto-resistive sensor effectively,which illustrates that the accuracy of the roll attitude measurement is improved.

关 键 词：全球定位系统 磁传感器 测量盲区 滚转姿态解算 

分 类 号：V249.32[航空宇航科学与技术—飞行器设计]