指挥控制系统的信息安全要素

指挥控制系统的信息安全包括保密通信、信息认证、入侵检测和病毒防范.系统易受攻击的环节是局域网与通信链路,需采取链路加密和端到端加密措施.报文信息的鉴别认证可采用差错控制码、报文鉴别码与数字签名进行.采用反常检测统计和基于规则的检测技术进行入侵检测.病毒防范可采用反病毒软件、防火墙、类属解密和数字免疫系统等新型反病毒措施.     

野外指挥自动化网络系统建设研究

针对野外特殊地理环境下,指挥自动化网络建立难度大的特点,探讨野外指挥自动化网络的总体组织模式,包括建立IP地址与域名规划、设备选型、网络组织等,以及应注意的问题：安全保密、数据加密、电源保障及雷电防护。综合考虑管理与技术,制定管理条款、安全保密策略,并采用数据加密、访问控制等技术手段,能快速准确的建立一个稳定可靠、安全保密的野外指挥自动化网络系统。     

靶场指挥电视系统优化分析与研究

针对靶场指挥电视系统现状，分析存在的不足。为了更加完善和提高靶场通信保障系统战斗力，结合社会科技发展状况，与现靶场指挥电视系统设备相结合，提出以计算机网络、数字通信、视频通信技术为基础，基于靶场高速指挥自动化信息网和通信保障系统数字同步传输网为平台，实现靶场指挥电视系统网络化、数字化，达到信息资源共享，真正实现可视化通信指挥，适应信息化靶场建设的需要。     

新型武器系统通信手段概念研究

现代战争的战场情况瞬息万变,紧张程度越来越高.传统的指挥方式和手段不能满足在战况急速变化条件下指挥作战的需求.根据国情及目前各相关单位分工状态,对战区自动化指挥系统加以论述,重点讨论直接承担指挥、控制武器发射的末级指挥通信系统.     

基于贝叶斯网络的指挥自动化系统生存性评估

针对指挥自动化系统生存性评估信息的不确定性问题,提出应用贝叶斯网络对指挥自动化系统的生存性进行定量评估。建立了指挥自动化系统生存性评估的贝叶斯网络模型,给出了基于贝叶斯网络的指挥自动化系统生存性评估的推理方法,并且应用基于M atlab的BNT工具包对该方法进行了实例分析。实例验证表明：该方法推理简单、易于实现,不仅可以计算出系统的生存性概率,而且还能识别出系统的薄弱环节。     

强化指挥自动化系统与武器系统的铰链

指挥自动化系统集指挥控制、情报侦察、预警探测、通信导航、电子对抗和信息保障等主要功能于一体,是未来信息作战的重要手段。指挥自动化系统作为敌我双方争夺信息优势的主要战场,其地位作用已经大大突破系统的一般战勤保障范畴,它既是组织高合成、高强度、快节奏高技术局部战争不可缺少的兵力“粘合剂”,成为战斗力的重要构成要素,也成为直接参加两军对垒的主战武器系统。空军指挥自动化系统建设遵循统筹规     

网络中心战对潜艇指挥自动化系统的挑战

在网络中心战条件下,潜艇指挥自动化系统实现了指挥、控制、通信、情报,侦察和监视各功能系统的一体化（C^4ISR）,增强了信息流通的连续性和速度,加快了指挥速度和提高指挥自动化系统的效能。根据我国目前的物质与技术水平,应研究外军的网络中心战,积极应对其给潜艇作战指挥带来的冲击,明确我潜艇作战系统尤其是指挥自动化系统的发展方向,运用网络中心战思想和相关技术,制定潜艇指挥自动化系统的长期发展规划。     

基于WSEIAC模型的指挥自动化系统效能分析

基于WSEIAC模型的指挥自动化系统效能分析,将事件概率作为指挥自动化系统的效能指标.通过定义可用性行向量、确定可信赖性矩阵、确定能力矩阵等步骤引入WSEIAC模型.该模型的推广,通过求解武器系统操作人员维修武器系统成功率、电子对抗后武器系统完好概率等参数矩阵,实现指挥自动化系统效能的求解.     

重点区域防空指挥自动化系统分析与研究

简要介绍了指挥自动化系统 .从建立重点区域防空指挥自动化系统的必要性出发 ,分析了目前重点区域防空系统的现状 .针对现状提出了重点区域防空指挥自动化系统建设的设想 .最后 ,根据系统论的观点更深一层次说明加强重点区域防空指挥自动化系统建设的重要性 .     

美国核指挥、控制与通信系统发展

介绍了美国核指挥、控制与通信(NC3)系统的定义、组成及特点。重点研究了核指挥与控制系统、通信系统以及预警探测系统等重要组成部分的发展现状,并分析了未来美国核指挥、控制与通信系统的发展前景。     

Nitrosation and Nitration of Tetraacetyldibenzylhexaazaisowurtzitane

Tetraacetyldibenzylhitane (TADBIW) was subjected to debenzylation by nitrosating with inorganic materials available commercially to synthesize tetraacetyldinitrosohexaazaisowurtzitane (TADNSIW). TADNSIW was purified, and its structure was determined by FTIR, 1H NMR, MS and element analysis. The debenzylation reaction of TADBIW gave quantitative benzaldehyde as a by-product. This indicates that the reaction produces an imine cation as an intermediate. Hexanitrohexaazaisowurtzitane (HNIW) was prepared from unpurified TADNSIW with the yield over 96.0 % and the purity more than 98.0 %. And the mechanism of the reaction from TADNSIW to HNIW is proposed to be oxidation of nitroso and nitration of acetyl on the molecule of TADNSIW, This reaction system involved is simple, and the reaction can complete within a short time and under mild conditions. The product can be easily to separate and the waste disposed readily.     

A Robust Algorithm for Watermarking 2D Vector Maps with Low Shape-Distortions

The technique of watermarking has been introduced into 2D vector maps for many potential applications such as protecting the copyright of important GIS （geographical information system） data and tracing the data source of military maps. In most previous works, although the validity of the map data could be preserved during the embedding procedure, the shape-distortions of the map elements are usually neglected which would tend to degrade the invisibility of the watermarking schemes. A shape-preserving algorithm for watermarking 2D vector maps is presented in this paper. A 1D distance sequence extracted from the original map is adopted as the cover data instead of 2D coordinates. A watermark bit is represented by changing the distributions of the cover data. The embedding procedure induces lower shape-distortions than in former works. Experimental results indicate better invisibility of the proposed scheme, as well as its robustness to certain attacks such as map simplification, interpolation, additive noise and most geometric transforms.     

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.     

Improvement and Experiment of the Reamer in Vibra Cutter Against Wave Edge of Titanium Sheet Alloy Parts

By analyzing the influencing factors of part quality making of sheet alloy of titanium by vibra cutter, the shape of upper reamer is set as cylinder and wedge-shaped form, and the lower reamer as plain and hemicycle form, and its main structural parameters are defined as well. Then it is validated further that such improved vibra cutter reamer can be used to process curve-edged parts of titanium alloy sheet. The experimental result shows that the titanium alloy sheet parts processed by above equipment have no sharpen angles for convex parts and evident crevasse of concave-edged part. In summary, such improvement can eliminate the free-waved edge and improve the manufacture quality of titanium alloy sheet parts greatly.     

Experimental Study on the Small Flyer Initiating Behavior of Fine-grained Explosives

The initiating behavior of fine-grained explosives by small flyer is studied. The diameter of small flyer in this device is 1 ram. The test results indicate that the granularity of explosives has great effect on its flyer initiating sensitivity.The flyer initiating sensitivity of the fine-grained explosives is higher and the critical initiating energy is lower than that of common explosives. For common explosive, the flyer initiating sensitivity increases as the density is reduced. But for the fine-grained explosive, the test results are exactly opposite.     

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.     

Robust Graded Sliding Mode Tracking Control for Low Speed Spinning Ballistic Missiles

The nonlinear dynamic model of spinning ballistic missiles is established during the first boosting phase of the missile. Based on the conventional backstepping sliding mode control and the assumption of a two time-scale separation of missile dynamics, a graded sliding mode controller is designed with two sub-sliding surfaces which have invariability to external disturbances and parameter perturbations, and a matrix which comprises three first order low pass filters is introduced to prevent ＂explosion of terms＂. Owing to the upper bounds of the uncertainties are difficult to obtain in advance, adaptive laws are introduced to estimate the values of the uncertainties in real-time. Eventually, the numerical simulation results given to show the proposed controller can ensure the steady flight of missiles.     

A Study on the Estimation of Aeroheating upon the Warhead Nose at Supersonic Speed

An expression for estimating the aeroheating on a warhead nose at different supersonic speeds is proposed by incorporating CFD （computational fluid dynamics） and the least-square method. Compared with the traditional estimation formula, the expression is more accurate, convenient and can be used in the optimized design of warheads. The error from the result obtained in the test of a ball cartridge flight is less than 3 %. It satisfies the engineering requirements.     

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.