摘要
随着科技的发展和对国防科技的重视,对于炮弹飞行姿态的测试与研究也在这类大环境下发展起来。目前,随着地磁理论的完善,利用地球这一具有长期稳定特性的矢量场,将其作为测量基准,利用地磁/GPS的组合测试炮弹飞行姿态。GPS模块测试出炮弹的实时地理坐标,输出后的信息通过IGRF球谐地磁场模型计算变换为地磁信息。测量系统采用两片具有两个垂直敏感轴的HMC1052地磁传感器进行测量,获得地磁在传感器方向上的分量;着重分析各参考坐标系以及传感器安装位置的空间几何关系,设定炮弹姿态的测试条件,进行炮弹姿态角和磁方位角的推导和解算;然后通过炮弹弹道数据仿真,分析理论与实际解算的姿态角误差,验证本文炮弹姿态解算算法的可行性和正确性。
With the development of science and the importance of national defense-related technology,the test and research on the flying attitude of projectile have also been developed in such a large environment. At present,with the improvement of geomagnetic theory,we know that the earth＇s magnetic field is a vector field with long-term stability,in this paper,using the earth＇s magnetic field as the measurement datum and using the combination of geomagnetic/GPS to test the projectile flight attitude. The GPS module tests the real-time geographical coordinates of the artillery shells,the output information is calculated by the IGRF spherical geomagnetic field model and converted into geomagnetic information. The measurement system uses two HMC1052 geomagnetic sensors with two vertical sensitive axes to measure and obtain the geomagnetic component in the direction of the sensor. This paper analyzes the spatial geometric relationship between the reference coordinate system and the sensor installation position,and sets the test conditions for the shell posture. Next,in the paper,we deduce and calculate the attitude angle and magnetic azimuth of the projectile. Finally,through analyzing the trajectory data of artillery shells,the attitude error of the theory and the actual calculation is analyzed,and the feasibility and correctness of this algorithm are verified.
作者
段偲丽
管雪元
李文胜
Duan Sili;Guan Xueyuan;Li Wensheng(State Key Laboratory of Transient Physics, Nanjing University of Science and Technology,Nanjing 210096, China)
出处
《电子测量技术》
2018年第2期31-36,共6页
Electronic Measurement Technology
关键词
磁传感器
姿态测量
弹道仿真
姿态解算
magnetic sensors
attitude measurement
trajectory simulation
attitude solution
