基于神经网络TSP算法的防空作战火力分配

基于神经网络TSP算法建立了防空作战火力分配模型,并通过在计算机上仿真运行了实例,优化了火力分配方案.这是对解决防空作战火力分配问题的一种有益的尝试与探索,同时也对防空作战指挥决策和理论研究以及指挥自动化系统建设提供了参考.     

防空智能火力分配的实现方法

防空指挥当中火力分配的原则有很多,从目标威胁度和射击有利度等方面对火力分配原则加以分析.同时介绍了在Windows环境下,利用Visual C 开发工具对智能火力分配原则进行代码编程的实现方法,重点阐述了基于面向对象的编程思想,运用多线程和对象链表的编程手法解决了火力分配过程中各目标对象和火力单位对象的属性参数实时处理问题.     

管道热边界层理论的研究

研究了高粘性液体管道流动的热边界层理论。利用圆柱坐标粘性流运动基本微分方程,提出了管道热边界层方程,推导出边界层中的温度分布以及层流和紊流时热边界层厚度的常微分方程和解析解计算表达式,并通过Matlab编程实例,给出了热边界层厚度解析解与数值解的比较。计算结果表明:1)粘性的影响将使得热边界层的发展加快,随着粘性和流量的增大,其影响将更加显著;2)紊流时热边界层的发展比层流时要慢。     

反舰导弹自主式火力分配

针对反舰导弹火力分配问题,提出了应首先实现从"瞄准式火力分配"向"自主火力分配"的观念转变,研究了反舰导弹自主火力分配的概念和国外发展动态,探讨了火分代码法、目标尺寸法、目标成像法和火分规则法四种自主火力分配方式的思路及对海战场的影响。研究表明,反舰导弹采用自主火力分配方式,能有效提升其自主作战能力。     

系统可靠性模糊分配的熵权方法

采用模糊数来表示不同模糊因素的相对强度,即通过指标得分的比较,用三角模糊数来表示m个模糊因素的权重系数,建立模糊判断矩阵,根据α截集和决策者对模糊判断矩阵的满意乐观程度指标λ进行模糊区间运算,得出各分系统可靠性指标所占的熵权,再根据熵权对系统可靠性指标进行分配。这种方法可以正确把握处理模糊问题的尺度,减少人为干扰。     

Log‐concave and concave distributions in reliability

Nonparametric classes of life distributions are usually based on the pattern of aging in some sense. The common parametric families of life distributions also feature monotone aging. In this paper we consider the class of log‐concave distributions and the subclass of concave distributions. The work is motivated by the fact that most of the common parametric models of life distributions (including Weibull, Gamma, log‐normal, Pareto, and Gompertz distributions) are log‐concave, while the remaining life of maintained and old units tend to have a concave distribution. The classes of concave and log‐concave distributions do not feature monotone aging. Nevertheless, these two classes are shown to have several interesting and useful properties. We examine the closure of these classes under a number of reliability operations, and provide sharp reliability bounds for nonmaintained and maintained units having life distribution belonging to these classes. © 1999 John Wiley & Sons, Inc. Naval Research Logistics 46: 419–433, 1999     

武器系统研制进度风险分析方法研究

首先对大型武器系统研制进度风险分析的一般特点进行了讨论 ,然后根据工期要求紧迫项目的特点 ,利用瑞利分布对进度风险分析的方法进行了研究 ,并结合实例对某系统研制进度风险进行了定量分析     

战场物资无人机配送研究

战场物资无人机配送是未来信息化战争后勤保障发展的重点方向,是适应未来高强度、快节奏战争的重要手段。对国内外配送无人机的应用与战场物资配送保障的情况进行概述,重点讨论了无人机在配送过程中涉及的任务分配问题。提出了未来战场物资无人机配送的一些重点研究方向,包括战场物资无人化保障理论研究、军民融合式战场物资无人机配送研究、战场物资无人机配送过程一体化研究以及传统车辆与无人机联合配送的研究。     

Damage accumulation and probability of kill for gun and target engagements

Determination of the gunfire probability of kill against a target requires two parameters to be taken into consideration: the likelihood of hitting the target (susceptibility) and the conditional probability of kill given a hit (vulnerability). Two commonly used methods for calculating the latter probability are (1) treating each hit upon the target independently, and (2) setting an exact number of hits to obtain a target kill. Each of these methods contains an implicit assumption about the probability distribution of the number of hits‐to‐kill. Method (1) assumes that the most likely kill scenario occurs with exactly one hit, whereas (2) implies that achieving a precise number of hits always results in a kill. These methods can produce significant differences in the predicted gun effectiveness, even if the mean number of hits‐to‐kill for each distribution is the same. We therefore introduce a new modeling approach with a more general distribution for the number of hits‐to‐kill. The approach is configurable to various classes of damage mechanism and is able to match both methods (1) and (2) with a suitable choice of parameter. We use this new approach to explore the influence of various damage accumulation models on the predicted effectiveness of weapon‐target engagements.     

基于Butterworth分布的跳频信号参数估计

能够有效地估计接收到的跳频信号参数是干扰跳频通信的关键。针对接收到的未知任何先验参数的跳频信号,提出了一种基于Butterworth分布的跳频信号参数估计算法。由于Butterworth分布具有较好的时频聚集性和抑制交叉项性能,该算法能够在低信噪比条件下有效提取并估计出跳频信号的跳频周期、跳变时刻和跳频频率。仿真结果证明了该算法对跳频信号参数估计的有效性。