基于成像跟踪的比例导引律实现

在综述了各种成象跟踪算法的基础上，给出了一种新的适于飞行力学自动目标跟踪算法的基本思想和方法步骤。研究和控制利用成像跟踪算法获取比例导引律中视线角速度和导弹怀目标间相对速度的方法，并结合导弹飞行控制数学模型，提出了一种基于成像跟踪的比例导引律实现方法。     

Optimal guidance against active defense ballistic missiles via differential game strategies

The optimal guidance problem for an interceptor against a ballistic missile with active defense is investigated in this paper. A class of optimal guidance schemes are proposed based on linear quadratic differential game method and numerical solution of Riccati differential equation. By choosing proper parameters, the proposed guidance schemes are able to drive the interceptor to the target and away from the defender simultaneously. Additionally, fuel cost, control saturation, chattering phenomenon and parameters selection were taken into account. Satisfaction of the proposed guidance schemes of the saddle point condition is proven theoretically. Finally, nonlinear numerical examples are included to demonstrate the effectiveness and performance of the developed guidance approaches. Comparison of control performance between different guidance schemes are presented and analysis.     

某型战机追踪导引研究

基于对广泛应用与研究的各种比例导引律的比较与分析，提出应用纯比例导引实现战机追踪导引的方法，并通过追踪以不同机动方式逃逸的飞行目标的仿真，说明了它的正确性与可行性。     

Asymptotically Optimal Simulation Budget Allocation under Fixed Confidence Level by Ordinal Optimization

Ordinal optimization concentrates on isolating a subset of good designs with high probability and reduces the required simulation time dramatically for discrete event simulation. To obtain the same probability level,we may optimally allocate our computing budget among different designs,instead of equally simulating all different designs. In this paper we present an effective approach to optimally allocate computing budget for discrete-event system simulation. While ordinal optimization can dramatically reduce the computation cost, our approach can further reduce the already-low cost.     

改进的推广KALMAN滤波器在导弹被动制导中的应用

本文研究将改进的推广Ｋａｌｍａｎ滤波器应用于导弹被动制导问题。为了提高系统的可观性，我们采用一种双重指标来设计最优导引律。仿真结果表明，如何系统状态的均值较高，波动较小，那么ＭＥＫＦ的估计精度明显优于推广Ｋａｌｍａｎ滤波器。     

论职业指导在大学生就业中的重要作用

结合我国大学生的就业现状,说明职业指导在大学生这个重点群体就业中的作用和重要性。同时根据目前大学生职业指导的现状提出一些合理化建议。     

基于控制论的信息系统自主可控能力分析

利用现代控制理论分析试验信息系统自主可控能力是一种可行的技术思路。具体方法是:在梳理系统自主可控能力约束条件的基础之上,以一种时变线性系统来定义试验信息系统,同时遵循控制系统的表述方法,将构建试验信息系统的各子系统自主可控能力的组合定义为状态向量,将各子系统自主能力和软硬件设备可控能力的组合定义为控制向量,把系统的完全自主可控状态确立为最终的期望目标,并用数学表现形式表示为相应泛函数,这样就可以利用二次线性最优控制问题方法求解自主可控分量的一般形式,这个结果就是试验信息系统自主可控能力最优的条件。     

ESP理论对职业英语口语培训的指导意义

ESP理论具有针对性强、教学内容专业化、学用结合等特点，有效指导职业英语口语培训中教学大纲的制定、课程安排及教学方法的选择，对开展富有成效的职业英语口语培训有重大的指导意义。     

空天飞行器制导控制技术研究进展与展望

本文在简要介绍空天飞行器制导控制技术发展情况基础上，针对其典型的任务形态给制导控制技术带来的挑战，分别从动力学建模、轨迹优化与制导、飞行控制与导航等四个方面阐述了制导控制技术中面临的关键技术，并探讨了空天飞行器制导控制技术后续发展方向与思路。     

Ideal proportional navigation for exoatmospheric interception

Ideal proportional navigation (IPN) is a natural choice for exoatmospheric interception for its mighty capture capability and ease of implementation. The closed-form solution of two- dimensional ideal proportional navigation was conducted in previous public literature, whereas the practical interception happens in the three-dimensional space. A novel set of relative dynamic equations is adopted in this paper, which is with the advantage of decoupling relative motion in the instantaneous rotation plane of the line of sight from the rotation of this plane. The dimension-reduced IPN is constructed in this instantaneous plane, which functions as a three-dimensional guidance law. The trajectory features of dimension-reduced IPN are explored, and the capture regions of dimension-reduced IPN with limited acceleration against nonmaneuvering and maneuvering targets are analyzed by using phase plane method. It is proved that the capture capability of IPN is much stronger than true proportional navigation (TPN), no matter the target maneuvers or not. Finally, simulation results indicate that IPN is more effective than TPN in exoatmospheric interception scenarios.