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为降低单兵制导火箭弹的成本,同时确保其具有较高的命中精度,进行了单兵火箭弹捷联导引滤波方法研究。首先,推导了视线角速度的解耦公式,去除了导引头测量信息中耦合的弹体姿态信息;然后,建立了视线运动方程和测量模型,为了解决测量信息与弹目距离和接近速度的弱相关性,使用一个时变Gauss-Markov随机向量代替视线运动方程中的非线性部分,采用UKF滤波方法得到可用于制导控制律设计的视线角速度的实时估计值;最后,通过正交仿真验证了所设计的单兵火箭弹捷联导引滤波方法的可行性。
In order to reduce the cost of man-made rockets and ensure their high precision, a guided-filtering method of single guided rockets was proposed. Firstly, the decoupling formula of line-of-sight angular velocity is deduced, and the coupled projectile attitude information in the seeker’s measurement information is removed. Then, the line of sight motion equation and the measurement model are established. In order to solve the problem that the measured information is close to the distance and approach speed of the projectile Correlation, using a time-varying Gauss-Markov random vector instead of the non-linear part of the line of sight motion equations, the UKF filter method is used to obtain the real-time estimation of line-of-sight angular velocity that can be used for the guidance control law design. Finally, Feasibility of Designing Strapdown Guidance Filtering Method for Single Soldier Rocket.