面向服务的海战场指挥信息系统体系结构框架

一体化联合作战和基于信息系统的体系作战对海战场指挥信息系统提出了更高的要求.从面向服务的海战场指挥信息系统构建需求出发,在军事信息服务定义的基础上,利用SOA和P2P设计了海战场指挥信息系统体系结构的物理框架和功能框架,给出了各框架的组成和结构,并与已有框架作了对比分析,结果表明所提的框架更加全面、可靠和灵活,为开展面向服务的指挥信息系统研究打下了坚实的基础.     

新一代指挥信息系统中的语义网应用能力分析

随着现代战争形式的演变,提升指挥信息系统能力的关键在于信息处理.语义网是一种先进的信息表示方法,能够有效地提升机器的信息理解和处理能力.简要介绍了语义网技术的组成和本质能力,并结合美军的研究实例,分析了其在新一代指挥信息系统中的应用能力,指出了发展机遇和挑战,并对未来研究提出了建议.     

Waypoint analysis for command and control

Command and Control (C2) in a military setting can be epitomized in battles‐of‐old when commanders would seek high ground to gain superior spatial‐temporal information; from this vantage point, decisions were made and relayed to units in the field. Although the fundamentals remain, technology has changed the practice of C2; for example, enemy units may be observed remotely, with instruments of varying positional accuracy. A basic problem in C2 is the ability to track an enemy object in the battlespace and to forecast its future position; the (extended) Kalman filter provides a straightforward solution. The problem changes fundamentally if one assumes that the moving object is headed for an (unknown) location, or waypoint. This article is concerned with the new problem of estimation of such a waypoint, for which we use Bayesian statistical prediction. The computational burden is greater than an ad hoc regression‐based estimate, which we also develop, but the Bayesian approach has a big advantage in that it yields both a predictor and a measure of its variability. © 2004 Wiley Periodicals, Inc. Naval Research Logistics, 2004     

一种可实现TF/TA2的无人飞行器三维航迹规划方法

从规划空间的有效表达着手对无人飞行器三维航迹规划展开研究,基于地形和威胁提出的飞行器航迹规划方法将航迹规划分为学习阶段和查询阶段,环境信息和飞行器的大部分约束条件结合在路线图的构造过程中,航迹搜索在此路线图中进行并最终实现全部约束条件.试验结果显示,该方法可以实时获得实现TF/TA2的三维航迹.     

光码分多址系统中多维地址码的构造及分析

光码分多址（OCDMA）技术主要运用于接入网中,设计大容量、低误码率的地址码是该技术实用化的前提。本文在光正交码（OOC）的基础上,分析了二维光正交码（2D—OOC）和三维光正交码（3D—OOC）的构造方法,并对三种地址码的性能进行了数值仿真。结果表明：三维地址码容量最大,带宽利用率较好,误码率较低,表现出的性能整体较好。     

时钟漂移对GPS/BD2组合系统精度影响分析

首先针对GPS时钟漂移,推导了计算位置误差的表达式,然后对GPS/BD2组合系统的时钟漂移进行了分析和修正,并利用模拟信号源提供的信号进行了仿真.结果表明:经过时钟漂移修正后,定位精度有了一定的提高,验证了仿真结果.     

“又＋动1＋又＋动2”格式之考察

本文对收集到的＂又＋动1＋又＋动2＂格式的语料进行了定量、定性分析,从它的构成形式、语义特点、位序特点、语法功能四个方面概括了这一格式的特点,并比较分析了这一格式与＂又＋形1＋又＋形2＂格式的相同点和不同点,以及与其它并列格式的区别。以期对＂又A又B＂格式的特点有个更全面、准确地把握。     

超细粒子对环氧树脂的增韧改性研究

用NW-2辛酯偶联剂改性过的复合氧化锌(ZnO)超细粒子对环氧树脂进行增韧,借助于SEM和力学性能测试手段研究了ZnO粒子的形貌以及NW-2辛酯偶联剂改性复合ZnO粒子在环氧树脂体系中的增韧情况及其机理.结果表明:经过NW-2辛酯偶联剂改性的复合超细ZnO粒子对环氧树脂具备良好的增韧效果.     

5GHz雷达的干扰计算模型概述

文章从开发5 GHz模型的目的入手,简要介绍了5 GHz模型的结构组成,详细讨论了5 GHz模型的干扰计算流程,包括无线局域网和雷达的场景设置、技术参数设置、总干扰计算等,最后给出了5 GHz模型的一个运行范例,以期为其它干扰模型的开发提供借鉴参考。     

Numerical modelling of non-ideal detonation in ANFO explosives applying Wood-Kirkwood theory coupled with EXPLO5 thermochemical code

Ammonium nitrate and fuel oil (ANFO) based explosive is a classic example of non-ideal high explosives. Its detonation is characterized by a strong dependence of detonation parameters on explosive charge diameter, presence and characteristics of confinement, as well as incomplete consumption of explosive at the sonic point.In this work we propose a detonation model based on the Wood-Kirkwood (WK) theory coupled with the thermochemical code EXPLO5 and supplemented with reaction rate models. Our objective is to analyze the validity of the model for highly non-ideal ANFO explosives, with emphasis on effect of reaction rate models.It was found that both single-step and two-step pressure-based models can be calibrated to reproduce experimental detonation velocity-charge radius data of ANFO at radii significantly above the failure radius (i.e. for D/D_id > ∼0.6). Single-step pressure-based model, with the pressure exponent equal to 1.4, proved to be the most accurate, even in the vicinity of the failure radius. The impact of the rate models is most evident on temporal (and spatial) distribution of flow parameters in detonation driving zone, especially when it comes to the conversion and width of detonation driving zone.