建立了某战术地地导弹纵向运动模型,采用带有状态约束的极点配置方法设计了过载自动驾驶仪,分析了制导回路特点,分析了用GPS实现比例导引的可行性,指出过载闭环的必要性。研究了制导指令更新频率、GPS定位误差对制导系统过载、脫靶量的影响。研究结果表明增加末导时间能够消除GPS更新频率和定位误差对制导回路的影响,为某导弹制导控制系统设计提供依据。

Founded a certain ground-to-ground missile’s motion model, designed the missile’s lateral accelerate autopilot in pole placement with states constraint, analyzed guidance loop’s characteristic, and the feasibility of applying GPS achieve proportional guidance. Analyzed the impact of refreshing frequency of guidance command and the GPS ’s error to the guidance system’s accelerate and the miss distance, the results show that increasing the terminal guidance time will reduce the effect of GPS’s refreshing frequency and location error. Choose the refreshing frequency for a certain missile’s guidance loop.