一种灵巧弹药的滚转估计方法

摘要

灵巧弹药的滚转估计是保证制导性能的关键。利用GPS数据和陀螺仪输出，得到俯仰和偏航角速度及滚转角角速度调制方程；运用扩展卡尔曼滤波器对灵巧弹药进行滚转估计；最后使用蒙特卡罗法进行仿真。仿真结果表明：该方法能较好地估计弹体的滚转角姿态，误差在允许范围内，有一定的应用价值。%Roll estimation is an important problem to guarantee guidance performance of smart ammunition. At first, gets the pitch and yaw rate and the angular velocity modulation equations by the use of GPS velocity and the output of gyroscope. Then, the article estimates the roll angle with the extended Kalman filter. At last, simulate it with Monte Carlo method. The simulation result shows that this method can be effectively calculate body roll angle attitude and the error is in the allowable range, it has application value.