目标定位和跟踪的卡尔曼滤波加 BP 神经网络的方法

首先分析了卡尔曼滤波应用于单目标定位与跟踪时需要校正的因素,接着用具有反向传播（ＢＰ）学习算法的前向网络,建立校正原理和校正网络体系结构,最后分别给出了它对第１类和第２类火控系统应用的数学模型。     

人工智能技术在决策支持系统中的应用

首先分析了决策支持系统(DSS)和专家系统(ES)的局限及两者的区别,然后提出了专家支持系统(ESS)的概念,并详细阐述了ESS的系统结构。     

某型引信压电陶瓷加速老化试验

压电陶瓷作为压电引信的关键元件,其贮存可靠性至关重要。为研究贮存对压电陶瓷性能变化的影响,进行了历时176天的某型引信用压电陶瓷加速老化试验。根据试验结果研究了陶瓷的压电参数随试验条件和老化时间变化的规律,探索了压电陶瓷的贮存可靠性和可靠贮存寿命。     

Computational study of the multiechelon production planning problem

In this article we try to identify appropriate solution procedures for different types of multiechelon production planning problems. We conduct an extensive computational study on uncapacitated multiechelon production planning problems with serial and assembly types of bill-of-material structures. Problems are formulated as both single-source fixed charge network problems and as multicommodity flow problems with fixed charges. Solution procedures considered are branch and cut, Lagrangean relaxation (for the network formulation), and branch and bound (for the multicommodity formulation). Three hundred problems with various problem structures are tested. Our conclusions suggest the best approach for each type of problem structure. © 1997 John Wiley & Sons, Inc.     

Note: Optimal allocation of resources to nodes of series systems with respect to failure-rate ordering

Allocation of spare components in a system in order to optimize the lifetime of the system with respect to a suitable criterion is of considerable interest in reliability, engineering, industry, and defense. We consider the problem of allocation of K active spares to a series system of independent and identical components in order to optimize the failure-rate function of the system. © 1997 John Wiley & Sons, Inc.     

Cyclical schedules for the joint replenishment problem with dynamic demands

The Joint Replenishment Problem (JRP) involves production planning for a family of items. The items have a coordinated cost structure whereby a major setup cost is incurred whenever any item in the family is produced, and an item-specific minor setup cost is incurred whenever that item is produced. This paper investigates the performance of two types of cyclical production schedules for the JRP with dynamic demands over a finite planning horizon. The cyclical schedules considered are: (1) general cyclical schedules—schedules where the number of periods between successive production runs for any item is constant over the planning horizon—and (2) power-of-two schedules—a subset of cyclical schedules for which the number of periods between successive setups must be a power of 2. The paper evaluates the additional cost incurred by requiring schedules to be cyclical, and identifies problem characteristics that have a significant effect on this additional cost. © 1997 John Wiley & Sons, Inc. Naval Research Logistics 44: 577–589, 1997.     

一种基于地表类型的地杂波快速仿真方法

地杂波仿真技术对机载雷达的设计与研制有着重要影响.针对机载雷达地杂波仿真技术开展研究,提出了一种基于地表类型的地杂波快速仿真方法.该方法以数字地图和载机航线为两个重要输入,采用雷达波束照射区域的数字地图为有效先验地理环境信息进行仿真,提高了杂波仿真的逼真度;同时针对传统仿真方法中计算量较大的问题,优化了散射单元中天线功...     

武器装备体系贡献率研究现状分析

武器装备体系贡献率是全面、科学地评估武器装备在体系中发挥作用情况的指标,是目前装备论证领域的研究热点.收集了近年来国内在该领域的研究成果和国外与之相关的研究成果,通过对武器装备体系贡献率的概念内涵、属性特征、评估指标和方法的总结归纳,分析了研究中亟待解决的问题和面临的挑战,为武器装备体系贡献率的研究工作提供参考借鉴.