质心干扰对毫米波雷达制导反舰导弹自导飞行状态影响研究

从分析质心干扰原理着手．提出了毫米波雷达制导反舰导弹抗质心干扰的雷达最大允许开机距离模型,并分析了质心干扰对毫米波雷达制导反舰导弹自导飞行状态的影响。建模仿真和数值分析计算表明,只要在作战使用中根据实际情况．精心选择导弹使用参数．毫米波雷达制导反舰导弹具备较强的抗质心干扰能力。     

对末制导雷达的箔条诱饵干扰分析

分析了箔条弹对末制导雷达干扰过程中的质心模型以及箔条弹的最大投放间隔、最佳投放时机、干扰效能等,并对分析结果进行了Matlab仿真验证,为箔条弹在实际作战中的运用提供了理论依据。     

试论舰舰导弹雷达-电视复合制导

提高舰舰导弹的抗干扰能力是舰舰导弹发展过程中亟待解决的问题．通过对雷达制导体制和电视制导体制的比较以及对现代水面舰艇无源干扰作战的分析,提出了末制导雷达“初制导’、“二次搜索”等概念．阐述了雷达、电视两种制导体制相结合,取长补短的复合制导过程,较好地改善了舰舰导弹的抗干扰能力．     

反舰导弹末制导雷达参数对舰艇无源干扰效果影响分析

反舰导弹对水面舰艇构成了重大威胁，无源干扰是舰艇对抗雷达末制导反舰导弹的重要手段。分析了现代反舰导弹末制导雷达参数的主要特征，研究了其主要技术参数对舰艇冲淡干扰和质心干扰效果的影响，并通过仿真进行了初步验证。     

某末制导雷达信号处理机的设计

高性能数字信号处理器(DSP)和复杂可编程器件(CPLD)的迅速发展，为末制导雷达信号处理平台的设计与实现提供了方便。介绍了某末制导雷达信号处理机的基本功能，以及利用ADSP21060和CPLD对该处理机进行软硬件设计，其结果对其它末制导雷达信号处理机的设计也具有参考价值。     

反舰导弹末制导雷达技术及其搜捕方式

通过对导弹雷达末制导技术以及末制导雷达搜索方式的研究，强调了反舰导弹搜捕方式对作战的重大影响，对反舰导弹雷达末制导技术以及搜捕方式的发展进行了探讨。     

舰舰导弹的雷达电视综合制导

提高舰舰导弹的抗干扰能力是舰舰导弹发展过程中亟待解决的问题。通过对雷达制导体制和电视制导体制的比较,及现代水面舰舰无源干扰的作战分析,提出了末制导雷达的“初制导”、“二次搜索”等概念;阐述了雷达、电视两种制导体制相结合,取长补短的综合制导过程;较好地改善了舰艇导弹的抗干扰能力。     

反舰导弹末制导雷达抗干扰性能指标的研究

反舰导弹末制导雷达在电子对抗环境中具有的抗干扰能力是导弹武器系统的作战能力和生存能力的基本保证。如何评定和考核其抗干扰性能是科研、生产和使用部门共同关心的问题。由于武器系统的抗干扰性能受诸多环节和因素的影响,所以至今还没有一个大家公认的工程上行之有效的评定准則。本文是在对我们所多年来评估雷达抗干扰能力方面的一些具体做法进行总结的基础上写成的,在对海杂波的抗干扰能力、对杂波干扰的抗干扰能力、对拖距干扰的抗干扰能力三个方面分別进行了讨论,比较侧重于工程实用,也能进行定量的评定,为客观和公正评价一部末制导雷达在各个工作阶段的抗干扰性能提供了一种方法,这种方法主要是从在干扰情况下经抗干扰措施后,对末制导雷达在无干扰时应达到的性能有多少下降量这个角度来考虑的。     

基于概率分析的反舰导弹末制导雷达效能评估

针对干扰环境的复杂性和抗干扰措施的多样性等问题,提出一种反舰导弹末制导雷达在电子干扰条件下的效能评估方法。运用概率分析方法,建立电子干扰设备对反舰导弹末制导雷达干扰成功的概率计算模型,以及反舰导弹末制导雷达抗电子干扰效能评估模型,并给出了效能评估步骤。评估结果表明：该模型为实现反舰导弹末制导雷达效能的定量评估提供了基础。     

复杂电磁环境下末制导雷达工作状态实时判别方法

准确判别末制导雷达工作状态是推断敌方导弹威胁程度、评估我方电子战系统干扰效果的重要前提之一。针对复杂电磁环境下,由于信号不准确、不完整导致末制导雷达工作状态判别准确率低的问题,提出复杂电磁环境下末制导雷达工作状态实时判别方法。判别时基于状态断点离散方法将工作状态相同、特征值接近的样本归为一类,使得离散区间的划分更加合理,增强判别方法抗噪声能力;采用不完整信息基本概率分配(BPA)修正方法,通过相似度修正因子对支持向量机输出的BPA进行修正,在不引入人为误差情况下实现对不完整信息的利用。仿真实验表明,该判别方法有效提高了末制导雷达工作状态判别准确率。     

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.     

Method for Measuring Velocity of Warhead Fragments Based on Photoelectric Detection

For measuring velocity and impacting position of single fragment of warhead, a non-contact measuring method is proposed, in which a six-light-screen array, a position indicator, a multi-channel chronograph and a computer are used.The principle of measurement is described. The key device of the system is a light screen array sensor which consists of six light screens allocated with certain geometrical parameters. When the fragment flies through the light screen array, the time of passing through each of the screens is recorded by the multi-channel chronograph. According to the time data and the geometrical parameters of the array, the velocity vector and the location of the fragment can be calculated immediately. The presented method can be used to locate the fragment and to measure the real velocity on its flying direction. It can also be used to measure the velocity of a fragment swarm after the system is engineered further.     

数码电子雷管中影响点火头性能因素分析

阐述了数码电子雷管中,点火药剂细结晶三硝基间苯二酚铅（LTNR）的制备工艺;从点火药剂的种类、加入黏合剂的质量分数、桥丝直径、点火头的电阻值、防潮漆的蘸涂等方面对点火头性能的影响因素进行了探讨;通过震动试验、并联起爆试验、延期精度检测与考核,试验结果表明：一次性合成的细结晶LTNR是制造数码电子雷管点火头较为理想的点火药剂,按技术要求生产的点火头性能指标能够满足行业标准要求。     

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.