舰载武器气动参数估计及弹道重构研究  

Research on aerodynamic parameter estimation and trajectory reconstruction of shipboard weapons

作　　者：陈炜[1] 李海滨[1] 丁传炳[1] 

机构地区：[1]中国舰船研究设计中心,武汉430064

出　　处：《海军工程大学学报》2018年第1期59-63,共5页Journal of Naval University of Engineering

基　　金：国家部委基金资助项目(20402020101)

摘　　要：为了精确计算舰载武器的运动飞行参数,首先以弹体的铅垂运动面为研究对象,分析了弹体飞行过程中的各种误差干扰源,推导了包含误差干扰源在内的纵向扰动运动学方程;然后,利用"系数冻结法"及拉普拉斯变换得到了解析解;最后,建立了以GPS误差源和气动系数误差干扰源为状态变量的系统状态方程和以GPS伪距测量的系统量测方程,并采用卡尔曼滤波算法进行了数值计算,计算结果表明:速度精度稳定时可达±0.5m/s,x方向上的位置精度收敛于±8m范围内,y方向的位置精度收敛于±10m范围内,同时还能获取到精度较为可观的姿态角信息。In order to calculate the motion parameters of shipborne weapons accurately, the vertical interference surface of the missile is analyzed, and the various disturbances are analyzed. The longitu-dinal perturbation kinematics equation including the error disturbance source is deduced. An analytical solution is obtained by using ＂coefficient freezing method＂ and Laplace transformation. A system state equation with the GPS error source and the interference source of aerodynamic coefficient as the state variables and a system measurement equation with GPS pseudorange measurement are established. Numerical calculation is carried out through Kalman filtering algorithm. The results show that the ac-curacy of the velocity is stabilized between zt〇 .5 m/s , the position accuracy in x direction is stabilized between 士 8 m, the position accuracy of 3; direction is stabilized between ＋ 10 m, and the attitude an-gle information with considerable precision is also obtained.

关 键 词：弹道重构 气动参数 GPS 铅垂运动 

分 类 号：TJ413.6[兵器科学与技术—火炮、自动武器与弹药工程]