论文部分内容阅读
纯比例导引律(PPN)的指令加速度垂直于拦截器速度方向,适用于大气层内拦截,但当目标速度大于拦截器速度时,其导引性能将较为严重地下降.真比例导引律(TPN)在拦截高速目标时不存在此问题,然而TPN的指令加速度垂直于视线,不适用于大气层内拦截.微分几何制导指令(DGGC)的指令加速度垂直于拦截器速度,但其性能却近似于以视线为参考的TPN制导律系列,因而适用于大气层内拦截高速目标.然而,构造DGGC的挠率指令需要引入目标加速度信息,同时DGGC指令形式较为复杂,存在鲁棒性不强等问题.本文通过对三维拦截几何的深入分析,提出了一种新的DGGC指令加速度的几何构造方法,不需要引入目标加速度信息,同时简化了DGGC指令形式,提高了鲁棒性,因而更利于工程实现.
The directive acceleration of pure Proportional Guidance Law (PPN) is perpendicular to the interceptor velocity and is suitable for intercept in the atmosphere, but its guiding performance will be more serious when the target velocity is greater than the interceptor velocity. TPN) does not have this problem when intercepting high-speed targets, whereas the TPN’s command acceleration is perpendicular to the line of sight and not suitable for intercept in the atmosphere. The DGGC instruction acceleration is perpendicular to the interceptor speed but its performance is similar to The line-of-sight TPN guidance law series is suitable for intercepting high-speed targets in the atmosphere.However, the construction of DGGC’s torsion command requires the introduction of target acceleration information, and the DGGC command form is more complicated with less robustness. Based on the deep analysis of three-dimensional interception geometry, a new geometric construction method of DGGC command acceleration is proposed, which does not need to introduce the target acceleration information, simplifies the DGGC command form and improves the robustness, which is more conducive to project implementation.