弹道导弹捷联惯性导航系统误差传播模型

弹道导弹捷联惯性导航系统(SINS)的误差是由陀螺仪和加速度计交叉影响产生的，与平台误差传播过程有本质区别，本文针对弹道导弹捷联惯性系统的实用模型开展了研究，得到了离散形式的误差传播，通过该模型建立的离散卡尔曼滤波仿真表明，模型准确地反映了捷联惯性导航系统的误差，为组合制导和提高射击精度研究提供了有利条件。

Rsearch on SINS Error Transfer Model of Ballistic Missile

The strap-down inertial navigation system (SINS) error of ballistic missile is generated by the mutual influence of gyroscope and accelerometer, and the transfer model is completely different ?from that of gimbaled INS. The discrete error transfer model was obtained through studying the ap?plied SINS error model of ballistic missile, and the discrete Kalman filtering simulation based on the model was carried out. The simulated results demonstrate that the obtained model can depict the SINS error exactly and provide advantages for integrated guidance research and improving hit accuracy re?search .