基于地磁信息的弹丸滚转角解算算法  

Research on calculation algorithm of projectile rolling angle based on geomagnetic information

作　　者：彭家宝 王鹏[1] 姚新涛[1] PENG Jiabao;WANG Peng;YAO Xintao(Northwest Institute of mechanical and Electrical Engineering,Xianyang 712099,China)

机构地区：[1]西北机电工程研究所,陕西咸阳712099

出　　处：《兵器装备工程学报》2022年第10期166-171,共6页Journal of Ordnance Equipment Engineering

摘　　要：提出了一套简易可行且精度较好的基于地磁信息的滚转角解算算法。利用弹丸弹道测量数据进行弹丸飞行过程中弹丸俯仰角和弹丸偏航角的近似计算,利用地磁感应强度投影在准弹体坐标系上的地磁感应强度分量和投影在弹体坐标系上的地磁感应强度分量之间存在的平面几何关系实现了弹丸滚转角的计算。通过MATLAB数值仿真和手摇无磁转台加LABVIEW开发环境组建的半实物仿真,分别完成该滚转角解算算法的数值仿真和半实物仿真验证。数值仿真结果表明,该滚转角解算算法切实可行。半实物仿真验证试验表明,在实验室环境下,该算法解算结果和准确值的差值在3°以内。考虑到实验室环境存在电磁干扰,预计在室外坏境下进行半实物仿真试验将会得到更好的验证结果。A simple and feasible and accurate roll angle resolution algorithm based on geomagnetic information was proposed.This algorithm first used ballistic data to make an approximate calculation of the elastic pitch angle and the yaw angle.This algorithm used the geometric relationship between ground magnetic component projected in the quasi-plastic coordinate system and ground magnetic component projected in the body coordinate system to achieve the calculation of the roll angle.Through the MATLAB simulation platform and the semi-physical simulation platform formed by the hand-cranked non-magnetic turntable and the LABVIEW development environment, the numerical verification and the semi-physical simulation verification of the roll angle algorithm have been completed respectively.Numerical simulation results show that the algorithm is actually feasible.The Semi-real simulation verification results shows that the difference between the calculated result of the algorithm is within 3 degrees in laboratory environment, which has good accuracy.Considering that there is an inevitable electromagnetic interference in the laboratory environment, it is expected that semi-real simulation will be better accurate in an outdoor environment.

关 键 词：智能弹药 地磁信息 算法 数值仿真 半实物仿真 

分 类 号：TJ41[兵器科学与技术—火炮、自动武器与弹药工程]