电视导引头性能分析

以某低成本电视导引头为基础,建立了跟踪系统的仿真模型.采用MATLAB/Simulink仿真工具对该系统进行了仿真试验,模拟了转子转动角频率、角动量、弹体振动等因素对系统性能的影响,评估了该系统的总体性能和实际应用的可行性,为电视制导武器系统的研制提供了一定参考依据.     

基于PC技术的高性能飞行控制实时仿真系统设计

针对实时仿真高性能、低成本和使用维护方便等要求,研究应用个人计算机技术进行飞行控制系统仿真设计的方法。提出了一种硬件基于Compact PCI总线工控机,软件基于Matlab/Simulink/RTW图形化建模开发工具和VxWorks操作系统的实时仿真系统,并研究了基于高性能PC-IG硬件的飞行视景仿真系统和虚拟仪表系统开发。应用该系统对某飞行控制系统进行实时控制律仿真验证,表明系统实时性能高,开发维护简单、快速。     

低成本IMU/GPS车辆组合导航系统设计与仿真研究

设计了一种低成本的IMU/GPS车辆组合导航系统.采用低精度的陀螺仪和加速度计作为惯性测量器件,构成惯性测量装置(IMU);然后,将该IMU与GPS构成组合导航系统,通过设计高效的组合导航算法来提高组合系统的定位精度.实验仿真结果表明,该低成本IMU/GPS车辆组合导航系统具有较高的导航精度,同时有效降低了系统成本.     

机载航空电子通信导航监视系统数字建模

为提高大型客机无线电通信导航监视系统的集成度、灵活性和可维护性,对机载航空电子通信导航监视 系统进行数字建模研究。通过开展大型飞机通信导航监视系统数字仿真模型建模仿真,快速实现通信导航监视系统 的架构设计、架构优化以及安全性指标分解;系统的功能、性能以及接口仿真;系统内部及系统对外总线传输延迟 分析和总线使用效率分析等,并分析CNS 系统仿真建模的优点。分析结果表明：该模型提供了一种用于飞机航电 CNS 系统快速建模、仿真和架构设计方法,为高效率、低成本实现下一代大型民机先进航空电子系统的设计、开发 和集成提供输入和支撑。     

基于PC的低成本空战训练系统研究

基于PC的训练系统是一种低成本训练手段,可作为传统地面模拟器与嵌入式训练系统的有效补充。提出了一种基于SIMBox仿真平台建立低成本空战训练系统的方法,设计了系统的基本架构,并对其中雷达火控系统建模、空空导弹弹道仿真和目标毁伤建模等关键技术进行了研究。仿真表明弹道轨迹反映了空空导弹特性,系统能够为空战训练提供较逼真的虚拟作战环境,可作为一种辅助性的空战训练手段。     

基于声卡的噪声仿真系统设计与实现

针对运载火箭地面综合试验中噪声参数测试精细化不足的问题,提出一种基于声卡的低成本噪声仿真系统设计方法.基于声卡的工作原理及性能指标,分析了利用声卡模拟噪声环境的可行性.采用虚拟仪器技术,设计了系统的硬件架构,并在LabVIEW平台下完成了噪声仿真软件的开发.测试结果表明:噪声仿真系统模拟发出的噪声信号与传感器所敏感到的噪声信号一致,工作性能稳定.该系统具有成本低、通用性强、操作简单等优点,目前已成功应用于运载火箭遥测系统综合试验的噪声参数测试.     

一种微小型电动舵机设计仿真与试验

为满足微小型导弹用舵机体积小、质量小、响应快的特点,设计了一种高可靠性、高灵敏度、低成本、小型化的电动舵机伺服系统。经建模仿真和试验验证,该系统满足快速性、线性度、频带宽度等方面的指标,为舵机小型化设计及导弹微小型化设计奠定基础。     

捷联惯性/里程仪组合定位定向系统方案设计及仿真计算

针对车载定位定向系统中存在的缺陷,设计了一种新的车载定位系统。完成了由低成本、高可靠性的捷联惯性参考系统与高分辨率里程仪组成的捷联惯性／里程仪组合定位、定向系统的方案设计及仿真计算。仿真结果表明,系统对姿态角、航向角等误差具有极高的在线对准及标定精度。组合系统无需停车,可进行零速校正。     

军用运输车辆高精度定位导航研究

针对军用车辆导航应用的高可靠、抗干扰、低成本需求,设计以北斗(Beidou navigation satellite system, BDS)与惯导(inertial navigation system,INS)松组合为核心,融合地图匹配、车辆运动信息辅助等方法的高精度定位 导航方案。分析车载BDS/INS 松组合信息融合过程和方法及车载里程计/捷联惯导系统(strapdown inertial navigation system,SINS)补偿组合算法,并基于此定位导航方案进行仿真分析,研制导航定位模组并进行道路测试。仿真和道 路测试结果验证了该定位导航系统的有效性。     

中心起爆战斗部简易传爆装置

针对目前一些中心起爆战斗部对于降低成本的需求,研制了一种低成本简易传爆装置。该传爆装置通过使用双路并联无包覆切割导爆索的方法来满足在低成本条件下可靠起爆战斗部的目的。仿真和试验结果表明:该传爆装置在有限的体积下可靠的实现了中心起爆战斗部的目的,可以满足一些中心起爆战斗部对低成本传爆装置的需求。     

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.