均匀设计在反舰导弹鉴定试验中的应用方法研究

通过分析反舰导弹鉴定试验的指标,阐述了采用均匀设计方法制定导弹的鉴定试验方案,以及对试验结果进行分析处理的方法,介绍了在导弹作战使用范围的自控终点散布、命中精度、捕捉概率、自导命中概率和导弹的单发命中概率的计算方法.     

导弹命中精度评定和评定精度快速分析方法

根据国际、国际标相关规定和蒙特卡罗数字仿真方法，提出了导弹命中精度评定和评定精度的快速分析方法，可进行弱本异常值分析，落点的纵向偏差与横向偏差的正态性分析，落后的纵向偏差与横向偏差的相关性分析，导弹园概率偏差分析，以及园概率偏差评定结果的精度分析，并且编写了规范的计算程序，该方法可以方便的应用于导弹命中精度分析。     

评定飞航导弹单发命中概率的方法研究

通过对抽样检验方法的研究,确立了区间估计的下限公式,用来在已知样本值的情况下确定导弹单发命中概率出现在该区间内的置信水平和精确度。     

基于序贯分析的制导弹药命中精度试验一次抽样方案

针对制导弹药命中精度靶场试验中采用一次抽样试验方案有时所需样本量较大,而采用序贯概率比检验方案时累积试验数变动幅度又较大的问题,提出了基于序贯分析的一次抽样试验方案。该方案将一次抽样方案和序贯分析试验结合了起来,综合了两者的优点.实例分析结果表明,该方案在保证试验精度的同时,有效地减少了累积试验数,提高了试验效率。     

成败型产品一次抽样检验方案研究

首先推导出了同时能满足检验上限、检验下限、生产方风险、使用方风险要求的一次抽样检验方案设计公式，并用GB/T 5080.5-1985中的数据验证了公式的正确性。之后推论出了同一产品在不同试验方案的鉴定结果可能完全相反。最后建议，应在鉴定试验前尽可能知晓产品的可靠性水平，从而可有目的地选择或设计试验方案，以求产品高概率通过鉴定试验。     

用广义伯努利参数R_(LB)确定抽检方案

本文利用广义伯努利过程参数确定导弹飞行试验抽检方案。以研制性全弹飞行试验结果作为设计定型飞行试验的验前信息;以设计定型飞行试验结果作为生产定型飞行试验的验前信息;以定型试验结果作为批检飞行试验的验前信息,给定置信概率和导弹的命中概率后,可得到设计定型、生产定型、批检飞行试验的抽检方案。若置信概率为0.8、命中概率为0.7时,广义伯努力过程参数所确定的设计定型试验发数要比单式抽检(鉴别比为1.4,生产方、使用方风险率为0.25时)确定的试验发数少,也比二项分布序贯截尾(鉴别比为1.4,生产方、使用方风险率为0.25)确定的平均试验发数少。     

“混合计数型”导弹试验方法研究

针对传统的“几发几中”试验方案在要求双方风险均较小的情况下,所需试验子样较大的问题,以导弹武器系统含飞行可靠性的导弹命中精度的鉴定试验方案为背景,研究提出了一种将飞行可靠性和命中概率进行综合考虑的“混合计数型”试验方法,该方法能够提供多种可供选择的试验方案,是对传统的“几发几中”方法的补充,更具一般性,为试验双方提供更多的参考方案．     

仿真可信性研究的方法和应用

首先简述基于软件工程的仿真可信性研究，包括模型校验管理，模型验证与模型确认以及文本化方法，然后介绍两个随机样本的静态一致性检验方法，适合对导弹飞行试验与仿真打靶的的命中点偏差，杀伤概率等进行一致性检验，也可对导弹飞行过程中一些特征点的偏差量进行统计分析。     

导弹命中精度仿真试验及评估方法研究

探讨了在导弹命中精度评估过程中,依靠实弹靶试弹道数据检验精度仿真模型、仿真技术、试验设计理论和数据统计理论实现命中精度的全面评定的可行性.仿真模型校验方法、仿真试验方案设计以及精度数据统计方法是主要技术重点.依据文中流程方法,可以指导技术人员进行导弹命中精度的评定.     

空空导弹环境例行试验批量及抽样研究

作为检验空空导弹生产工艺稳定性的重要手段,环境例行试验被订购方广泛采用,其抽样方案是承制方和订购方协商的重点。本文首先从相关国家军用标准中的规定入手,基于抽样检验中的接收概率对空空导弹的批量及环境例行试验的样本量进行分析。通过标准分析和定量计算得出,导弹的生产批量可根据订货量和生产能力确定,用于环境例行试验的样本量可在参考理论计算值的基础上适当考虑检验成本来确定。     

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.     

Stability of the Third Generation Intensifier under Illumination

The stability under illumination of transmission-mode GaAs photocathode sealed in the third generation intensifier is investigated by use of spectral response testing instruments. The variations of spectral response with the illumination times under weak and intense illumination are compared. The variations of photoemission performance parameters are also characterized. The results show that during initial several weak illuminations photocathode behaves no evident decay and a maximum sensitivity is achieved, while under intense illumination the sensitivity of photocathode begin to decrease largely at the first illumination. The calculated performance parameters show that the variation of surface escape probability with illumination times is a direct cause of instability of photocathode. It is also found that under intense illumination peak wavelength is moved towards short-wave and peak response is decreased, which shows that the ability of long-wave response of photocathode is decreased.     

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.     

Passive Acoustic Radar for Detecting Supersonic Cruise Missile

A Passive Acoustic Radar is presented as a necessary complement to electromagnetic wave radar, which will be expected to be an effective means for detecting cruise missiles. Acoustic characteristics of supersonic flying projectiles with diverse shapes are expounded via experiment. It is pointed out that simulation experiment could be implemented using bullet or shell instead of cruise missile. Based on theoretical analysis and experiment, the ““acoustic fingerprint““ character of cruise missile is illustrated to identify it in a strong noise environment. After establishing a locating mathematical model, the technique of acoustic embattling is utilized to resolve a problem of confirming the time of early-warning, considering the fact that velocity of sound is much slower than that of light. Thereby, a whole system of passive acoustic radar for detecting supersonic cruise missile is formed.     

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.