捷联中制导系统的一体化设计

研究了对抗活动目标的捷联中制导系统的一体化设计概念和方法，包括设计失调估计器以实施初始对准；设计导航滤波器以估计目标运动状态，进而构造有关导航参数；考虑高阶受控对象数学模型来设计最优中制导律。数字仿真结果表明，本设计能在飞行过程中实施快速初始对准，并能获得极小的交班误差．

An Integrative Design for Strapdown Midcourse Guidance System

It is known that integrative design of strapdown midcourse guidance exists, but no usefUl details about it are aVailable in the open literature. Such design is now needed by Chineseaerospace industry and we present our research results on it.Our design proceeds in three steps. Eqs. (11) and (12) are used to design a mis alignment estimator, which is an extended Kalman fliter ; it is used to carry out initinl alignment during aught of missile. Then Eqs. (16) and (17) are used to design a navigation filter,which is a Kalman filter ; it is used to estimate the target motions and generate the guidance parameters. Finally, adopting a high- order controlled plant model, we derive an optimalmidcourse guidance law. which is used to determine the gains of guidance and autopilot respectively.Simulation results of , a certain type of tactical missile are presented in Fial. 2 and 3.From Fig. 2, it can be seen that misalignment can be estimated within about 10 s. In Fig. 3,the straight line is for the case of using the estimator of the above mentioned first step. and the curved line, not using such estimator. It can be seen from Fig. 3 that the use of misalignment estimator makes accurate targeting possible.