基于地磁信息的火箭弹滚转角测量系统研究  

Flight attitude angles measurement system of rocket projectile based on geomagnetic field

作　　者：卢志才[1] 高敏[1] 贾春宁 

机构地区：[1]军械工程学院导弹工程系,河北石家庄050003 [2]总装备部驻上海地区军代室,上海209109

出　　处：《中国测试》2014年第3期1-4,共4页China Measurement & Test

基　　金：军械工程学院基金项目(YJJXM13020);武器装备预研基金项目(9140A05040213JB34001)

摘　　要：在火箭弹飞行过程中,为实现火箭弹弹道修正,需实时解算弹体的滚转角。该文根据地磁场基本特性和火箭弹飞行过程中姿态变化关系,通过姿态变换矩阵,建立滚转角解算数学模型。搭建基于地磁信息的滚转角测量系统,采用两轴磁传感器测量地磁场矢量,辨识火箭弹滚转姿态信息。滚转角系统在火箭弹上进行飞行搭载试验,结果表明,利用地磁得到的解算滚转角线性度良好,与陀螺测得的弹体旋转速度相匹配,能够满足火箭弹弹道修正的要求。In order to correct the trajectory of the rocket projectile, the attitude angle needed to be calculated in real-time. The aim of the research was to provide a solution for roll angle determination in the presence of magnetic field disturbance. During rocket flight, the geomagnetic field component changed in each sensor as the result of the changed Euler angle. The attitude angle computational formula was designed according to the transformation matrix. For measuring the roll angle, two-axis magnetic sensor was utilized to measure the geomagnetic field in the article. The guidance scheme by roll angle was proposed according to geomagnetic data and the starting control point parameters were also designed properly. The method was employed in the rocket projectile trajectory correction experiment. And roll angular counted by the method could satisfy the demand for trajectory correction.

关 键 词：火箭弹 弹道修正 磁传感器 滚转角 

分 类 号：TJ71[兵器科学与技术—武器系统与运用工程] TP212.1[自动化与计算机技术—检测技术与自动化装置]