基于INS／LAS组合末制导方法研究与仿真

为提高巡航导弹末制导性能和精确打击能力，研究基于惯导／激光主动导引头组合末制导方法，即利用激光导引头的测量信息，估计惯导系统误差并修正惯导系统的状态参数。针对末制导阶段导弹运动复杂，系统状态易发生突变和量测噪声不确定的特点，提出了改进的Sage-Husa滤波算法，并结合巡航导弹末制导导引规律进行了仿真验证。结果表明，该滤波算法对提高制导系统精度和可靠性十分有效。

Approach and Simulation of Integrated Terminal Guidance Based on INS and Laser Active Seeker

To improve the attacking precision and the terminal guidance performance of cruise missiles, an approach of integrated terminal guidance system based on INS/LAS is studied, which estimates the error of INS and corrects the state of INS by the measuring information of laser active seeker. In order to adapt the complex flying track of missile, the sudden change of state and the uncertainty of measuring noise, the modified Sage-Husa filtering algorithm is presented. The simulation verification is carried out in combination with the terminal guidance law of cruise missile. The results show that the modified filtering algorithm is very effective to improve the accuracy and the reliability of integrated guidance systems.