无线自组网在防空导弹网络化作战中的应用研究

在网络化作战的模式下,通信网络已变得同武器平台一样重要,需要具有一定的快速反应能力、灵活性和抗毁性。针对防空导弹网络化作战的特点和对通信网络的需求,将无线自组网技术应用于防空导弹网络化作战中,并且分析了其优势。结合防空导弹部队的组织特点,探讨了具有分级结构的无线自组网网络实现方法和作用,结合现状展望了其发展方向。为构建适合防空导弹网络化作战的无线自组网提供一定的参考依据。     

基于短波信道的无线自组网链路层协议研究

主要针对短波信道特点,利用定向天线在空分复用方面的优势,研究定向天线用于短波无线自组网的应用方案;借鉴传统无线移动自组网数据链链路层TDMA协议,提出了一种基于短波信道无线自组网的链路层协议;并通过Opent仿真软件对提出的协议进行比较分析,证明该方案具较原协议在吞吐量、时延、负载上具有一定提升。     

基于自适应重构的多弹协同自组网技术研究

为满足弹群编队协同作战的智能化需求,开展基于自适应重构的多弹协同自组网技术研究,重点介绍自适应重构自组网的网络体系架构、工作流程以及关键技术。将认知网络的认知环概念引入自组网,提出了基于认知的自适应重构技术、自适应按需加权分簇算法以及基于地理位置信息的自适应重构路由技术,使多弹协同自组网初步具备"自感知-自决策-自配置-自优化"等智能化特征,为导弹武器装备的智能化提供新的理论思路。     

无线自组网分布式编码域非正交多址机制性能分析

基于无人平台集群的分布式协同作战是未来战争的发展趋势,由此对智能集群无线自组网通信提出了快速响应的性能需求。针对现有无线自组网分布式多址接入机制在复杂多变战场环境与时断时续通信链路中存在的效率下降、无法满足快速响应需求的问题,提出基于分布式协同的编码域多址(DC-CMA)机制。DC-CMA机制以分布式无线自组网邻居节点信息维护与非正交多址技术为基础,设计高效的接入编码图样,通过降低图样稀疏性减少资源浪费,提高多址机制整体资源效率。数值仿真结果表明,在信道中断率相同时,与正交多址机制相比,DC-CMA机制可将信息交互周期缩短10%~50%,提升通信资源效率达5%~30%。利用无线自组网节点设备样机,模拟分布式协同任务数据进行端到端传输时延测试,得出DC-CMA机制相比于正交多址机制可降低平均传输时延超过30%,能够为提升无人平台集群分布式快速响应协同能力提供支撑。     

基于QUIC 的无线自组网数据同步算法

针对轮询和gossip 2 种数据同步存在的应用局限性问题,结合快速UDP 网络连接(quick UDP internet connections,QUIC)传输协议和gossip 算法的特性,提出一种基于QUIC 的无线自组网数据同步算法。介绍 QUIC-gossip 算法的核心原理、数据传输策略和动态拓扑适应性,并通过实验和性能评估进行验证。结果表明：该 算法能够降低同步数据的延迟,具有鲁棒性较强、数据传输较快和适应性较强的特点,为解决无线自组网中的数据 同步问题提供了一种新方法。     

多无人机协同作战通信自组网技术

移动自组织网络以其高度的自治性、抗毁性和拓扑动态可变性等突出优势成为非常适合于组建无人机网络的技术。阐述了无人机自组网的概念与特点,介绍了国外无人机自组网的研究情况,探讨了无人机自组网的关键技术。分析了无人机自组网面临的问题。     

基于IEEE802.11s协议的弹载组网终端

针对弹群网络需要依托地面交互设备进行通信,无法为弹药集群提供动态、灵活、高效的自组织网络的问题,提出了基于IEEE802.11s协议的弹载组网终端。该弹载组网终端采用无线Mesh组网技术,通过速率自适应的MAC协议以及跨协议层的AODV路由算法,实现了在高动态环境下弹群节点的自组网功能。实测结果表明,该弹载组网终端传输距离、传输带宽及传输延迟等方面均能满足自组网传输要求,同时满足弹载安装环境的小型化要求,可以应用到巡飞类弹药上,使弹药集群达到灵活、高效组网的目的。     

基于无线自组网的莫尔斯译码节点的研制

目前对莫尔斯信号的译码器的研究都是针对单一信号源,信息传到PC机以后才能实现网络化传输。新研制的译码节点利用无线自组网技术将所有不同信号源的信息同时经过多跳网络传到PC,而且采用新的概率法来判定码速和各种纠错方法提高解码的正确率;还具备了如下特色：微小型、低成本、低功耗、网络化与可视化。     

联网水雷阵及其关键技术研究

联网水雷阵由联网水雷和无线浮标节点组成。当目标进入联网水雷阵监控区域时,各水雷节点在分布的空间和时间上,获得目标的特征信息,并通过网内信息处理技术,实现对战场目标的定位、分类识别和跟踪。其关键技术包括：联网水雷阵自组网、联网水雷阵网内信息处理、联网水雷阵智能控制和联网水雷阵的低功耗技术等。     

Ad Hoc网络的发展及其在军事通信中的应用

该文主要结合Ad Hoc网络的结构和特点，介绍了网络发展的历程，针对网络在军事通信中的应用主要介绍了一种面向军事通信开发的无线自组网系统NTDR（Near Term Digital Radio）。     

Open Rule-setting System Applied to Conceptual Design of Engines

Open rule-setting method advanced in this paper concentrates on providing designers of engines with a convenient way to express their design innovations and develop the expected prototypes in the early CAD stage, and constitute effective models for the following analysis process of CAE and CAPP. The problems arisen in the process of conceptual design with the traditional experience-based development method are analyzed. Based on those analyses, open rule-setting method is presented and some associated technical problems are discussed. The functional framework of open rule-setting system was built as software engineering methods. The speciality of the engine product as a kind of complex product and the requirement of the engine product based on its structural particularity to rule-setting system are considered carefully. A demonstration is supplied to illustrate how the open rule-setting method enhances the efficiency and quality of the engine conceptual design.     

Research on Linux Network Device Driver

By analyzing the working principle of Linux network device driver, discussing the Linux network driver structure and its key technologies, the general network driver structure and its design methodologies in Linux system are summarized. Through modifying the network device driver of Linux device driver 3rd version snull, c and improving the COW technology, the Zero-Copy technology in Linux （kernel version 2.6.11 ） is implemented. In the end, the success test tells us that the thorough analysis of network device driver is the foundation of many applications, and it also provides a certain improvement to a lot of real applications, even to military application development.     

Algorithm for Multi-laser-target Tracking Based on Clustering Fusion

Multi-laser-target tracking is an important subject in the field of signal processing of laser warners. A clustering method is applied to the measurement of laser warner, and the space-time fusion for measurements in the same cluster is accomplished. Real-time tracking of multi-laser-target and real-time picking of multi-laser-signal are introduced using data fusion of the measurements. A prototype device of the algorithm is built up. The results of experiments show that the algorithm is very effective.     

Influence of Installing Error on the Surface Shape Precision of the Axial Symmetry Aspheric Workpiece in Lapping

A method to calculate the surface shape error, which is caused by the installing error between the workpiece and the lapping tool in the process of form lapping, is proposed. The mathematical model which the installing translation error influences on the workpiece surface shape error is established. The changing rule of the error is simulated through the calculating example of the paraboloid workpiece. The results indicate that the surface shape error of the workpiece is increasing with the increase of the installing translation error, it is also increasing gradually along the center point of the curve surface to the edge, and the influence is severer to the curve surface with great curvature than that of the small curvature when the translation error is the same.     

Experimental Research on Output Performances of Giant Magnetostrictive Actuator

The paper introduces the performances of magnetostrictive actuators and its applications, discusses the design methods for the structure and internal magnetic circuit of a giant magnetostrictive actuator, and makes tests on the output displacement and force characteristics for an actuator using homemade magnetostrictive material. The experimental result shows that the actuator has satisfactory output precisions and ranges in transient and stable states, and can be used in lowfrequency vibration control system of precise equipment.     

Overview of Anti-tank Mines

First the different anti-tank mines laying possibilities are shortly summarized： hand emplaced, with mine layers, ground or helicopter relatively topographical well defined, and with cluster systems of projectiles, rockets and aircraft dispensers. Then examples of the three generations of anti-tank mines are presented：Ⅰ generation： detonating only beneath the track; Ⅱ generation： detonating beneath the track and belly; Ⅲ generation： mines with off-route actions. Weight and cost comparisons are strongly favoring the off-route Ⅲ-generation mines.     

A Finite Element Analysis on Static Strength of a Complex Section

A static finite element analysis （FEA） of an impulsive controller section is presented. The boundary condition and a part of the loads are applied. Considering the grades of the stress around the holes being large, the dense grids are adjusted accordingly. Four cases with different loads are compared, thus the influences of different loads on the section are analyzed. Numerical results show that the maximum stress of the section is lower than the strength limit of the material, and the section will not be broken with the static loads.     

Discussion on Mechanism of Breech-Blow Caused by Propellant Charge

From the view point of launch safety caused by fracture of propellant charge, this paper points out that the safety criterion of pressure wave is inadequate to evaluate the launch safety of propellant charge based on the initial negative differential pressure and sensitivity tests. Generally, the maximum barrel pressure does not depend upon the intensity of pressure wave correspondingly. The pressure wave intensity can not describe the fracture degree of propellant charge in chamber and reflect the mechanical environment of propellant charge fracturing exactly and wholly. The evaluation criterion for launch safety of propellant charge should be built on the basis of depicting the fracture degree of propellant bed.     

Experimental Studies of Toxicity on HNIW and Its Intermediates

The polycyclic nitramine hexanitrohexaazaisowurtane（HNIW） is a compound of high energy density. HNIW can replace 1, 3, 5-trinitro-1, 3, 5-triazacyclohexane（RDX） or HMX, hut its toxicity is unknown. In this paper, HNIW, hexabenzylhexaazaisowurtzitane （HBIW）, tetraacetyldibenzulhexaazaisowurtzitane （TADBIW）, tetraacetyldiformylhexaazaisowurtzitane（TADFIW） and tetraacetylhexaazaisowurtzitane（TAIW）, which are intermediates of the synthesis of the HNIW, were selected as the tested objects in acute toxicity test, acute eye stimulation test and skin irritation test according to the standards of ＂chemical product testing method-401 ： acute oral toxicity test＂, ＂chemical product testing means-405： acute eye irritation/corrosion test＂ and ＂chemical product testing means-404： acute dermal irritation/corrosion test＂ of National Circumstance Protect Bureau. The results show that all of the five objects have no toxicity, no stimulation to eye and skin under the tested conditions.     

Dynamic Simulation for Missile Erection System

In order to study the dynamic characteristics of the missile erection system, it can be considered as a rigid-flexible coupling multi-body system. Firstly, the actual system is abstracted as an equal and simplified one and then the forces applied to it are analyzed. Secondly, the rigid-flexible coupling dynamic simulation for erection system is accomplished by use of the system simulation software, for example Pro/E, ADAMS, ANSYS, MATLAB/Simulink, etc. Finally, having the aid of simulation results, the kinetic and dynamic characteristics of the flexible bodies in erection system are analyzed.The simulation considering the erection system as a rigid-flexible coupling system can provide valuable results to the research of its kinetic, dynamic and vibrational characteristics.