水下武器探测和信息处理的综合化与平台多样化

近年来,鱼雷技术内涵的延伸和功能的扩展给水下武器探测和信息处理带来了新的应用和发展空间,水下探测与信息处理模式呈现出了多样化和综合化的新局面,主要体现在新的探测平台带来的优势。未来作战模式的改变,使得实现平台—武器探测一体化以及武器探测与信息处理技术的融合成为其技术发展的主流趋势。利用平台的成套传感器,把接敌信息下载到武器上,以改进其捕获目标能力和提高其自导性能;利用平台处理器来增强武器的处理能力;利用平台显示器可以实时显示武器的战术态势;利用平台能实现武器对威胁的快速响应等等。当前常规鱼雷、低速UUV和反鱼雷鱼雷的技术发展分别代表了水下武器探测技术的3个主要应用方向。本文试图跟踪近年来这3种武器平台的发展状况以及与其相关的探测技术的发展趋势,归纳了这3种武器平台探测与信息处理技术的发展动向,并阐述了其目前的研究状况和面临的主要问题。     

高科技背景下的鱼雷武器（续）

在分析现代鱼雷特点的基础上，介绍了世界各国装备和在研中的各型鱼雷，概括了高科技背景下鱼雷武器发展的几大趋势     

一种新型远程鱼雷系统的设想

当今鱼雷技术发展迅速,考虑未来海战的实际需求,结合我国鱼雷武器的发展水平,本文提出了一种新型鱼雷武器系统－远程多体鱼雷系统的设想,以提高我海军水下武器的威慑力及大战区范围内的作战能力。     

反鱼雷鱼雷作战模式及拦截弹道初步研究

讨论了舰艇发射反鱼雷鱼雷直接拦截鱼雷弹道的问题，在典型理想工况条件下，建立了反鱼雷鱼雷武器的发射角与舰艇观测方位角的函数关系式，探讨了在某些限制条件下对于给定鱼雷的攻击能否被拦截的问题，同时给出了反鱼雷鱼雷所需的最小速度，为舰艇发射反鱼雷对抗鱼雷攻击提供了参考。     

鱼雷防御技术的发展与展望

回顾了二战以来先后出现的鱼雷主要防御装备,包括水面舰艇用的防雷网、爆炸式反鱼雷系统、拖曳式声对抗装置和拖曳诱饵AN/SLQ25,潜艇用的机械式噪声发生器、气幕弹、一次性机电式宽带噪声发生器、悬浮式声干扰器和声诱饵以及自航式声诱饵。本文从水面舰艇鱼雷防御系统、反鱼雷鱼雷武器系统、AN/WSQ11鱼雷防御系统、下一代水声对抗装置、超空泡射弹武器系统以及水下声能武器六方面展望了未来的鱼雷防御技术,分析了该领域今后的发展趋势。     

近年来世界鱼雷武器发展现状及走向

本文归纳了目前世界在研在役鱼雷状况，分析限当今世界鱼雷武器研制特点及鱼雷技术发 侧重点。本文是为世界鱼雷数值数据加写的１９９６年年度报告。     

高科技背景下的鱼雷武器

在分析现代鱼雷特点的基础上，介绍了世界各国装备和在研中的各型鱼雷，概括了高科技背景下鱼雷武器发展的几大趋势。     

反鱼雷鱼雷战斗部触发灵敏度仿真

反鱼雷鱼雷(ATT)战斗部触发灵敏度仿真是ATT利用触发引信引爆战斗部的关键技术.本文以ANSYS/LS-DYNA有限元分析软件为平台,建立了来袭鱼雷和ATT有限元模型,并对ATT以不同速度、不同角度撞击来袭鱼雷进行了仿真计算,得到了ATT的触发动态响应特性.该研究可为反鱼雷武器战斗部触发敏感装置的触发灵敏度设计提供参考.     

国外反鱼雷鱼雷技术现状及发展趋势

总结了国外反鱼雷鱼雷技术发展的主要标志性阶段,同时给出了国外几型在研的反鱼雷鱼雷主要性能,并从技术角度初步分析了各自技术道路的利弊.在此基础上,分析了国外反鱼雷鱼雷技术发展的主要共性和趋势,其主要表现在高频白导系统、声引信、大装药全向爆轰战斗部等方面.最后预测了未来可能发展的多种目的和功能的反鱼雷鱼雷种类.     

光纤制导鱼雷用光纤技术问题的分析探讨

光纤制导鱼雷是线导鱼雷的升级代产品，它将是未来服役的较有效的水中兵器之一。本文简要概述光纤技术及其在武器上应用的发展状况，着重分析了光纤技术在鱼雷上应用存在的技术难点。     

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.     

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.     

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.