弹载双波段共面单脉冲天线的设计

采用多模馈源和极化隔离技术,设计出适合小弹径导弹使用的共口径双波段卡塞格伦单脉冲天线。研制出来的主被动单脉冲雷达跟踪天线,较好地解决了和差矛盾问题,达到了被动天线频带宽、主动天线高增益、低副瓣的特性要求。     

空空导弹主被动雷达多模导引头研究

主被动雷达多模导引头是现代空空导弹末制导系统的一个重要研究方向。本文针对主被动雷达多模导引头设计时的关键技术,如宽频带天线罩、主被动复合天线、高灵敏度接收机、信息融合处理等技术,及其实现途径进行了分析,指出导引头设计时尤其要注意宽频带天线罩、复合天线设计时的数字补偿以及抗干扰性能设计时的主被动测量信息的融合处理。     

防空导弹雷达寻的导引头天线综述

该文综述了防空导弹雷达寻的导引头天线的基本功能,回顾其发展历史,提供了第一、二代防空导弹某些结构形式的天线性能和电参数。提出了2000年以后防空导弹雷达寻的导引头天线的基本模式和技术。     

双模复合寻的导引头的坐标变换与模式转换

介绍了导弹制导常用的四种坐标系 :弹体坐标系 ,目标坐标系 ,寻的雷达天线坐标系和目标视线坐标系。重点分析了能量接收器分置的双模复合寻的制导导引头的坐标变换矩阵 ;提出用坐标变换矩阵值作为模式转换依据的思想。最后对典型主 /被动双模复合导引头导弹的模式转换进行了分析。     

远程反辐射导弹被动雷达导引头技术研究

提出了发展远程反辐射导弹的必要性，研究了反辐射导弹被动雷达导引头技术，指出了超宽频带被动雷达导引头的局限性。     

抗诱饵对反辐射导弹需用过载的影响研究

在分析诱饵干扰反辐射导弹的基本原理和前提条件的基础上,指出反辐射导弹对抗诱饵干扰的基本方法有：减小导引头天线的分辨角;增大导弹的杀伤半径;加大导弹的机动性能;导引头将接收到的信号与弹上雷达库预先存储的典型目标特征进行比对,区分出目标和诱饵等．论证了在被动雷达导引头现有技术水平下,为有效对抗雷达诱饵干扰对导弹过载能力的要求．     

被动雷达导引头发展历程及技术综述

被动雷达导引头主要功能是完成对辐射源的截获和跟踪,其技术性能将直接影响反辐射导弹的性能.论述了被动雷达导引头的发展历程以及导引头的系统组成,对被动雷达导引头的主要技术指标进行了介绍,最后对被动雷达导引头的发展趋势进行了预测.     

反辐射导弹被动导引头分析

本文论述了反辐射导弹被动导引头的原理,对被动导引头的关键技术进行分析,包括超宽频带天线、测向体制、接收机的灵敏度和动态范围,从中发现提高被动导引头性能的技术措施和被动导引头存在的缺陷,为研制反辐射导弹和防御反辐射导弹提供参考。     

宽带被动导引头技术的分析

被动雷达导引头由于没有微波辐射源，具有隐蔽性好，抗电子干扰能力强和作用距离远等特点，在现代战争中有很强的生命力和实用意义，为各国各军种所重视。本文首先综述了国外被动雷达导引的发展和应用概况；然后介绍了被动雷达导引头的技术特点和应用条件；并着重分析了宽带被动雷达导引头的三个主要系统：宽频带天线，宽频带接收机，和数字信号处理单元及其关键技术；最后提出了宽带被动雷达导引头的发展趋势的预测。     

毫米波基片集成波导裂缝阵列天线研究

毫米波基片集成波导裂缝阵列天线具有频带宽、辐射效率高和剖面薄等优点,对实现毫米波雷达导引头的小型化研制工作具有重要的工程意义。根据基片集成波导理论,采用阵列天线设计方法,研究了基于微带贴片加载形式的单元裂缝天线频率带宽拓展方法;基于基片集成波导的平面馈电网络设计方法,设计了16×12微带贴片加载的基片集成波导裂缝阵面结构、并馈基片集成波导功率分配及和差波束形成网络,使用HFSS对天线模型进行了仿真分析和优化设计,研制了毫米波频段单脉冲基片集成波导裂缝阵列天线样机实物。经测试,天线带宽大于1 GHz,效率优于30%,驻波小于2,厚度仅为4 mm,指标测试结果与设计相符合。     

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。     

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.     

Design and Implementation of One Missile Visual Simulation System Based on OpenGL

The implementation of a missile＇s visual simulation system is explained that is developed with OpenGL（open graphic library） and the flight path and flight carriage in different stages of the missile are displayed. The establishment problems of the 3D scene are circumstantiated including the construction and redeployment of the model, creation of the virtual scene, setting of the multi-viewports and multi-windows etc. The missile＇s data driver, system flow, the modules and their mutual relations of the missile visual simulation system are discussed. The missile flight simulation results and effect of the scenes are given.     

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.     

Dynamic Encryption Technology in Ad-hoc Networks

A new dynamic encryption application in ad-hoc networks is proposed. The advantages of this method are its being able to use the previous ciphertext as a seed of a new encryption process, rendering the encryption process effective in all communication process by continuous dynamic key generation together with synchronization, and its capability to cut back on system bandages to a greater extent, which is valuable for the ad-hoc circumstance. In addition, the rationality and effectiveness of this novel encryption method have been verified by the test results.     

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.     

An Experimental Study on Electro Chemical Machining of Microelectrode

Puts forward a new method in machining microelectrode by electro chemical machining （ECM） and plastic deformed theory. The procedure of this method is to machine the microelectrode according to the basic rule of ECM theory at first. Then, with the change of ECM machining parameters, one of the microelectrode ends is exerted by a load. As a result, the elastic and plastic deformation is produced at the machining section and the microelectrode diameter is reduced. It has been proved that the proposed method can determine the optimum machining parameters to machine the microelectrode of Cu.     

Unscented Kalman Filter for Autonomous Warship Attitude Determination

To address a problem of autonomous attitude determination algorithm using gravitational field and geomagnetic field observation, a new recursive optimization autonomous attitude estimation algorithm is proposed. The algorithm is based on unscented Kalman fiher(UKF), and can synchronously provide the attitude rate information. The simulated results show that the measurement precision of the method could be increased by 2 times compared to that of the common methods.     

Error Coefficient Estimation of Inertial Platformin Its Calibration

The error coefficient estimation of inertial platform in the course of its consecutive ground calibration is studiedA separate-bias algorithm is adopted to estimate the error parameters effectively. The ill-conditioning problem of the equation solution caused by the huge state dimension is also resolved. And the simulation result shows its validity.