一种新的变结构制导律研究

在非线性相对运动学基础上提出了一种新的变结构制导律。变结构制导律仅利用了目标加速度界限的信息,因而在拦截过程中,并不需要精确的测量目标加速度,也就是取得了对目标机动的鲁棒性。在执行上,变结构制导律仅使用了视线转率测量值,因而和比例导引同样简单。仿真结果表明,所提出的制导律与比例导引相比有较大的性能改善。

Study on New Variable Structure Guidance Law

A new variable structure guidance law (VSG), based on nonlinear relative kinematics, is proposed. The proposed guidance law only uses the information of the target acceleration bound, therefore the precise measuring of target acceleration during interception is not required, namely, the robustness to target maneuver is achieved. Like proportional navigation guidance (PNG), the new guidance law, which utilizes line-of-sight (LOS) measurement only, is simple to implement. Numerical simulations show that the variable structure guidance law has much better performance compared to proportional navigation.