被动式寻的导弹的运动跟踪变结构制导

应用运动跟踪变结构控制理论设计被动式寻的导弹的制导律。这种运动跟踪变结构制导律（ＭＴＶＳＧ）可以令导弹－目标相对视线角速度按照给定的运动规律变化，从而增强被动跟踪问题（等价于一个非线性系统）的可观性，同时保证导弹有很高的命中精度。仿真研究表明，在ＭＴＶＳＧ下，系统的可观性明显增强，因此系统状态的估计精度较高。进一步的研究表明，ＭＴＶＳＧ对系统状态估计误差有很强的鲁棒性。ＭＴＶＳＧ的上述各种优点使得导弹有很高的命中精度。

MOTION TRACKING VARIABLE STRUCTURE GUIDANCE FOR PASSIVE HOMING MISSILE

Motion tracking variable structure control theory is applied to design guidance law for passive homing missiles. This motion tracking variable structure guidance law(MTVSG) can force the missile target line of sight angular rate to vary on a given motion for enhancing observability of a passive guidance problem which is equivalent to a nonlinear system, and meanwhile guaranteeing a high hitting accuracy. Simulation studies indicate that under the MTVSG, the observability is apparently enhanced, so the estimation accuracy of the system states is relatively high. Further studies show that the MTVSG is robust to the estimation errors of the system states. The above advantages of MTVSG make the missile hit the target very accurately.