姿态更新算法在某型滚转弹药捷联寻的制导化中的应用研究

Research of Attitude Algorithm for Strapdown Homing Guidance System

针对某型滚转弹药,设计了基于微机电惯性组件的捷联制导系统。运用H_∞平方根滤波器,估计出弹目相对运动等信息,形成最优比例制导指令。利用微机电速率陀螺构建数字平台,实现毫米波捷联导引头量测信息及制导指令的坐标变换。对四元数法和等效转动矢量法的滚转弹姿态解算精度进行比较,并通过打击机动目标的仿真试验验证了姿态解算精度对制导精度的影响。仿真结果表明应用等效转动矢量法的捷联制导系统精度更高,能够满足要求。

For some rotating ammunition,the Micro strapdown guidance system was designed.H_∞square root filter was used to estimate the relative movement variables between ammunition and target,forming optimal proportional guidance command.Using Micro electromechanical gyro,the math platform was established.The attitude updating accuracy of quaternion algorithm and equivalent rotating vector algorithm was compared.Simulation,attacking the maneuvering target,shows that the equivalent rotating vector algorithm is more p...